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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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VaguelySerious merged 1 commit into
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peter/undo-stream-cancel
Jun 22, 2026
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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peter/undo-stream-cancel

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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
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ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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@VaguelySerious
VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk
, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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VaguelySerious merged 1 commit into
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peter/undo-stream-cancel
Jun 22, 2026
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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peter/undo-stream-cancel

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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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@vercel

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
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ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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@VaguelySerious
VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk
, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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VaguelySerious merged 1 commit into
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peter/undo-stream-cancel
Jun 22, 2026
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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peter/undo-stream-cancel

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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk
, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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Jun 22, 2026
Merged

Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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@VaguelySerious
VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk
, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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Jun 22, 2026
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
VaguelySerious merged 1 commit into
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This reverts commit e3672e8.

@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit by VaguelySerious · Pull Request #2554 · vercel/workflow · GitHub
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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit - #2554

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Revert #2547: fix(world-vercel): cancel v4 event frame stream on early exit#2554
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This reverts commit e3672e8.

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VaguelySerious requested a review from a team as a code ownerJune 22, 2026 18:22
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⚠️ No Changeset found

Latest commit: 6d27ad1

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production144202301672
✅ 💻 Local Development160502191824
✅ 📦 Local Production160502191824
✅ 🐘 Local Postgres159302311824
✅ 🪟 Windows15200152
✅ 📋 Other88501791064
Total7282010788360

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro125027
✅ example125027
✅ express125027
✅ fastify125027
✅ hono125027
✅ nextjs-turbopack14903
✅ nextjs-webpack14903
✅ nitro125027
✅ nuxt125027
✅ sveltekit14408
✅ vite125027
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable127025
✅ express-stable127025
✅ fastify-stable127025
✅ hono-stable127025
✅ nextjs-turbopack-canary133019
✅ nextjs-turbopack-stable15200
✅ nextjs-webpack-canary133019
✅ nextjs-webpack-stable15200
✅ nitro-stable127025
✅ nuxt-stable127025
✅ sveltekit-stable14606
✅ vite-stable127025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable126026
✅ express-stable126026
✅ fastify-stable126026
✅ hono-stable126026
✅ nextjs-turbopack-canary132020
✅ nextjs-turbopack-stable15101
✅ nextjs-webpack-canary132020
✅ nextjs-webpack-stable15101
✅ nitro-stable126026
✅ nuxt-stable126026
✅ sveltekit-stable14507
✅ vite-stable126026
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack15200
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable127025
✅ e2e-local-dev-tanstack-start-127025
✅ e2e-local-postgres-nest-stable126026
✅ e2e-local-postgres-tanstack-start-126026
✅ e2e-local-prod-nest-stable127025
✅ e2e-local-prod-tanstack-start-127025
✅ e2e-vercel-prod-tanstack-start125027

📋 View full workflow run

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.034s (-18.2% 🟢)1.005s (~)0.972s101.00x
💻 LocalNitro0.037s (-9.5% 🟢)1.011s (+0.5%)0.974s101.10x
💻 LocalNext.js (Turbopack)0.047s (-2.1%)1.006s (~)0.959s101.40x
🐘 PostgresNext.js (Turbopack)0.055s (-5.0%)1.013s (~)0.958s101.64x
🐘 PostgresExpress0.063s (+2.8%)1.012s (~)0.949s101.88x
🐘 PostgresNitro0.064s (+0.6%)1.014s (~)0.950s101.89x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.440s (+12.7% 🔺)2.313s (-8.5% 🟢)1.874s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.071s (-2.6%)2.005s (~)0.934s101.00x
💻 LocalNitro1.072s (-1.5%)2.005s (~)0.933s101.00x
💻 LocalNext.js (Turbopack)1.088s (~)2.006s (~)0.918s101.02x
🐘 PostgresNext.js (Turbopack)1.099s (~)2.011s (~)0.912s101.03x
🐘 PostgresNitro1.104s (~)2.010s (~)0.907s101.03x
🐘 PostgresExpress1.106s (~)2.008s (~)0.902s101.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro1.804s (+17.1% 🔺)3.937s (+12.1% 🔺)2.134s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.408s (-1.0%)11.021s (~)0.613s31.00x
💻 LocalExpress10.428s (-0.8%)11.022s (~)0.594s31.00x
💻 LocalNext.js (Turbopack)10.519s (~)11.023s (~)0.504s31.01x
🐘 PostgresNext.js (Turbopack)10.531s (~)11.019s (~)0.488s31.01x
🐘 PostgresExpress10.538s (~)11.019s (~)0.482s31.01x
🐘 PostgresNitro10.557s (~)11.024s (~)0.466s31.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro14.200s (+10.7% 🔺)16.193s (+6.1% 🔺)1.992s21.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.404s (-2.0%)14.025s (~)0.622s51.00x
💻 LocalExpress13.481s (-3.7%)14.025s (-1.4%)0.544s51.01x
💻 LocalNext.js (Turbopack)13.747s (~)14.026s (~)0.280s51.03x
🐘 PostgresExpress13.778s (~)14.025s (~)0.246s51.03x
🐘 PostgresNitro13.807s (-0.7%)14.022s (~)0.214s51.03x
🐘 PostgresNext.js (Turbopack)13.825s (-0.7%)14.023s (~)0.198s51.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro21.758s (+1.2%)24.258s (+3.3%)2.500s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro11.847s (-3.6%)12.021s (-7.7% 🟢)0.174s81.00x
💻 LocalExpress11.897s (-5.5% 🟢)12.147s (-6.8% 🟢)0.250s81.00x
🐘 PostgresExpress12.371s (-0.7%)13.022s (~)0.651s71.04x
🐘 PostgresNext.js (Turbopack)12.409s (-1.0%)13.017s (~)0.608s71.05x
💻 LocalNext.js (Turbopack)12.543s (+0.7%)13.025s (~)0.482s71.06x
🐘 PostgresNitro12.779s (+3.0%)13.308s (+2.3%)0.528s71.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro30.233s (+22.2% 🔺)32.942s (+23.4% 🔺)2.709s31.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.167s (+0.7%)2.008s (~)0.841s151.00x
💻 LocalExpress1.173s (-4.7%)2.009s (~)0.836s151.01x
💻 LocalNitro1.178s (-2.0%)2.008s (~)0.829s151.01x
🐘 PostgresExpress1.185s (-0.9%)2.007s (~)0.823s151.02x
🐘 PostgresNitro1.199s (+0.9%)2.008s (~)0.809s151.03x
💻 LocalNext.js (Turbopack)1.281s (-6.8% 🟢)2.006s (~)0.725s151.10x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.704s (+2.1%)4.732s (+6.2% 🔺)2.028s71.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.253s (~)2.075s (+3.4%)0.822s151.00x
🐘 PostgresExpress1.294s (-1.0%)2.007s (-3.2%)0.713s151.03x
🐘 PostgresNitro1.299s (+2.4%)2.008s (~)0.710s151.04x
💻 LocalNitro1.806s (-10.4% 🟢)2.149s (-14.3% 🟢)0.343s141.44x
💻 LocalExpress1.859s (-8.6% 🟢)2.314s (-7.7% 🟢)0.454s131.48x
💻 LocalNext.js (Turbopack)2.201s (-6.1% 🟢)2.734s (-6.3% 🟢)0.533s111.76x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.634s (+46.1% 🔺)5.509s (+35.7% 🔺)1.875s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.501s (-9.4% 🟢)3.344s (-11.1% 🟢)1.843s91.00x
🐘 PostgresNitro1.516s (+4.6%)3.568s (-3.0%)2.051s91.01x
🐘 PostgresNext.js (Turbopack)1.526s (+3.0%)3.565s (-8.3% 🟢)2.039s91.02x
💻 LocalExpress4.121s (-28.6% 🟢)5.011s (-21.9% 🟢)0.889s62.75x
💻 LocalNitro4.171s (-6.9% 🟢)4.724s (-5.7% 🟢)0.553s72.78x
💻 LocalNext.js (Turbopack)6.230s (-6.9% 🟢)6.815s (-8.1% 🟢)0.584s54.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.340s (+106.3% 🔺)9.138s (+86.0% 🔺)2.798s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.176s (~)2.008s (~)0.832s151.00x
💻 LocalNitro1.180s (-4.0%)2.005s (~)0.825s151.00x
🐘 PostgresExpress1.188s (-0.6%)2.007s (~)0.819s151.01x
🐘 PostgresNitro1.197s (~)2.008s (~)0.810s151.02x
💻 LocalExpress1.205s (-2.0%)2.005s (~)0.800s151.02x
💻 LocalNext.js (Turbopack)1.308s (-3.2%)2.006s (~)0.698s151.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.395s (+56.7% 🔺)5.020s (+29.5% 🔺)1.625s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.239s (-2.0%)2.007s (-3.3%)0.768s151.00x
🐘 PostgresExpress1.263s (-2.4%)2.008s (~)0.744s151.02x
🐘 PostgresNitro1.283s (+0.6%)2.075s (+3.3%)0.792s151.04x
💻 LocalNitro1.782s (-11.3% 🟢)2.073s (-10.4% 🟢)0.291s151.44x
💻 LocalExpress1.923s (-5.6% 🟢)2.313s (-15.5% 🟢)0.391s131.55x
💻 LocalNext.js (Turbopack)2.492s (+3.0%)2.916s (~)0.425s112.01x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.667s (+33.7% 🔺)5.466s (+27.2% 🔺)1.799s61.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.458s (-0.8%)3.885s (~)2.427s81.00x
🐘 PostgresNitro1.490s (+2.3%)3.761s (~)2.272s81.02x
🐘 PostgresExpress1.493s (+4.3%)3.676s (-2.2%)2.182s91.02x
💻 LocalNitro4.696s (-5.0% 🟢)5.013s (-9.1% 🟢)0.317s63.22x
💻 LocalExpress5.031s (-15.6% 🟢)5.514s (-19.1% 🟢)0.483s63.45x
💻 LocalNext.js (Turbopack)6.745s (-0.7%)7.517s (~)0.773s44.63x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.579s (+26.7% 🔺)7.760s (+18.1% 🔺)2.181s41.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro0.516s (-9.6% 🟢)1.021s (~)0.505s591.00x
🐘 PostgresNext.js (Turbopack)0.520s (-8.0% 🟢)1.006s (-1.7%)0.486s601.01x
💻 LocalExpress0.523s (-14.3% 🟢)1.004s (~)0.481s601.01x
🐘 PostgresNitro0.555s (-1.2%)1.006s (-1.6%)0.451s601.08x
🐘 PostgresExpress0.561s (-2.7%)1.041s (+1.7%)0.480s581.09x
💻 LocalNext.js (Turbopack)0.575s (-5.9% 🟢)1.005s (-1.7%)0.430s601.12x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.242s (+40.8% 🔺)6.547s (+29.7% 🔺)2.305s101.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)1.245s (-2.4%)2.007s (~)0.762s451.00x
🐘 PostgresExpress1.273s (-4.0%)2.029s (+1.1%)0.756s451.02x
💻 LocalExpress1.377s (-11.6% 🟢)2.028s (~)0.651s451.11x
💻 LocalNitro1.381s (~)2.028s (+1.1%)0.647s451.11x
🐘 PostgresNitro1.428s (+12.1% 🔺)2.101s (+4.7%)0.672s431.15x
💻 LocalNext.js (Turbopack)1.454s (-1.4%)2.006s (~)0.552s451.17x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro9.957s (+30.5% 🔺)12.274s (+29.2% 🔺)2.317s81.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express2.547s (-3.4%)3.085s (+0.9%)0.538s391.00x
🐘 PostgresNext.js (Turbopack)2.612s (+2.5%)3.034s (+0.8%)0.421s401.03x
🐘 PostgresNitro2.705s (+1.9%)3.059s (-2.5%)0.354s401.06x
💻 LocalExpress2.821s (-13.2% 🟢)3.244s (-19.1% 🟢)0.423s381.11x
💻 LocalNitro3.075s (+2.6%)3.522s (+2.5%)0.447s351.21x
💻 LocalNext.js (Turbopack)3.167s (-1.2%)3.944s (-0.8%)0.777s311.24x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.221s (+33.1% 🔺)24.597s (+29.2% 🔺)2.375s51.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.175s (-2.3%)1.006s (~)0.831s601.00x
🐘 PostgresExpress0.221s (+0.8%)1.006s (~)0.785s601.26x
🐘 PostgresNitro0.227s (+7.0% 🔺)1.006s (~)0.780s601.30x
💻 LocalNitro0.288s (-14.6% 🟢)1.004s (~)0.716s601.65x
💻 LocalExpress0.334s (-2.0%)1.004s (~)0.669s601.91x
💻 LocalNext.js (Turbopack)0.618s (+2.1%)1.022s (+1.7%)0.404s593.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.018s (+47.5% 🔺)3.865s (+23.9% 🔺)1.847s161.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.275s (+2.5%)1.041s (+3.4%)0.766s871.00x
🐘 PostgresExpress0.323s (+0.8%)1.006s (~)0.682s901.18x
🐘 PostgresNitro0.344s (+6.4% 🔺)1.007s (~)0.663s901.25x
💻 LocalNitro1.661s (-18.0% 🟢)2.124s (-14.0% 🟢)0.462s436.05x
💻 LocalExpress1.703s (-12.9% 🟢)2.227s (-9.8% 🟢)0.523s416.20x
💻 LocalNext.js (Turbopack)2.753s (+3.3%)3.041s (-1.1%)0.288s3010.02x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.570s (+110.6% 🔺)5.512s (+53.6% 🔺)1.942s171.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Next.js (Turbopack)0.488s (+1.4%)3.010s (-0.8%)2.522s401.00x
🐘 PostgresExpress0.497s (+0.8%)1.014s (~)0.517s1191.02x
🐘 PostgresNitro0.545s (+3.9%)1.041s (-0.8%)0.496s1171.12x
💻 LocalNitro7.949s (-15.0% 🟢)8.736s (-13.6% 🟢)0.787s1416.27x
💻 LocalExpress8.360s (-14.6% 🟢)8.957s (-15.6% 🟢)0.597s1417.12x
💻 LocalNext.js (Turbopack)10.800s (+7.3% 🔺)11.665s (+4.9%)0.865s1122.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro4.493s (+104.0% 🔺)6.501s (+58.2% 🔺)2.008s191.00x
▲ VercelExpress⚠️missing----
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Nitro

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.131s (-1.6%)2.003s (~)0.008s (-10.9% 🟢)2.014s (~)0.884s101.00x
💻 LocalExpress1.133s (-3.5%)2.004s (~)0.008s (-35.0% 🟢)2.014s (~)0.881s101.00x
💻 LocalNext.js (Turbopack)1.152s (~)2.003s (~)0.012s (-4.8%)2.019s (~)0.867s101.02x
🐘 PostgresExpress1.157s (-1.8%)1.998s (~)0.001s (-21.4% 🟢)2.010s (~)0.853s101.02x
🐘 PostgresNext.js (Turbopack)1.161s (-0.8%)2.001s (~)0.001s (-8.3% 🟢)2.010s (~)0.849s101.03x
🐘 PostgresNitro1.175s (~)2.000s (~)0.001s (-31.6% 🟢)2.011s (~)0.836s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.527s (+17.3% 🔺)3.740s (+9.6% 🔺)2.856s (+79.5% 🔺)7.168s (+28.4% 🔺)4.640s101.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.478s (-6.3% 🟢)2.007s (~)0.010s (-16.0% 🟢)2.020s (~)0.541s301.00x
💻 LocalExpress1.486s (-6.2% 🟢)2.007s (~)0.010s (-19.7% 🟢)2.020s (~)0.534s301.00x
🐘 PostgresExpress1.563s (-1.4%)2.011s (~)0.005s (-0.7%)2.031s (~)0.468s301.06x
🐘 PostgresNext.js (Turbopack)1.586s (-0.9%)2.011s (~)0.005s (+5.4% 🔺)2.026s (~)0.440s301.07x
💻 LocalNext.js (Turbopack)1.604s (-0.9%)2.008s (~)0.012s (-6.3% 🟢)2.023s (~)0.419s301.09x
🐘 PostgresNitro1.634s (~)2.002s (-1.7%)0.005s (+0.7%)2.027s (-1.6%)0.392s301.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro7.449s (+30.2% 🔺)9.216s (+21.6% 🔺)0.584s (+88.4% 🔺)10.312s (+22.4% 🔺)2.863s61.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.769s (+0.7%)1.060s (~)0.000s (+Infinity% 🔺)1.079s (~)0.310s571.00x
🐘 PostgresNext.js (Turbopack)0.772s (+1.4%)1.111s (+2.2%)0.000s (+111.1% 🔺)1.118s (+2.0%)0.346s541.00x
🐘 PostgresNitro0.813s (+5.8% 🔺)1.106s (~)0.000s (~)1.125s (+0.6%)0.312s541.06x
💻 LocalNitro1.122s (-17.9% 🟢)1.754s (-12.8% 🟢)0.000s (-71.4% 🟢)1.757s (-12.8% 🟢)0.635s351.46x
💻 LocalExpress1.176s (-11.1% 🟢)1.860s (-7.6% 🟢)0.000s (-42.1% 🟢)1.862s (-7.6% 🟢)0.686s331.53x
💻 LocalNext.js (Turbopack)1.428s (-1.4%)2.012s (~)0.000s (~)2.015s (~)0.587s301.86x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.412s (+13.9% 🔺)6.442s (-2.3%)0.000s (+Infinity% 🔺)7.227s (+1.5%)1.815s91.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.566s (+2.4%)2.137s (+1.7%)0.000s (~)2.197s (+2.1%)0.631s281.00x
🐘 PostgresNext.js (Turbopack)1.704s (-10.7% 🟢)2.348s (-7.7% 🟢)0.000s (+Infinity% 🔺)2.356s (-7.6% 🟢)0.652s261.09x
🐘 PostgresNitro1.704s (+3.0%)2.301s (+3.9%)0.000s (+3.8%)2.318s (+3.9%)0.614s261.09x
💻 LocalNitro2.838s (-18.9% 🟢)3.335s (-15.8% 🟢)0.001s (-53.2% 🟢)3.344s (-15.8% 🟢)0.506s191.81x
💻 LocalExpress2.881s (-20.9% 🟢)3.234s (-23.5% 🟢)0.001s (+73.7% 🔺)3.239s (-23.5% 🟢)0.358s191.84x
💻 LocalNext.js (Turbopack)3.869s (-6.1% 🟢)4.383s (-4.7%)0.001s (-16.7% 🟢)4.394s (-4.7%)0.525s142.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro6.907s (+21.3% 🔺)8.579s (+20.1% 🔺)0.000s (-100.0% 🟢)9.045s (+17.2% 🔺)2.139s71.00x
▲ VercelExpress⚠️missing-----
▲ VercelNext.js (Turbopack)⚠️missing-----

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalNitro15/21
🐘 PostgresNext.js (Turbopack)13/21
▲ VercelNitro21/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)🐘 Postgres16/21
Nitro💻 Local11/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run


Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

@ijjk
ijjk enabled auto-merge (squash) June 22, 2026 18:42
@ijjk
ijjk disabled auto-merge June 22, 2026 19:06
@VaguelySerious
VaguelySerious merged commit 6b1842e into mainJun 22, 2026
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@VaguelySerious
VaguelySerious deleted the peter/undo-stream-cancel branch June 22, 2026 19:07
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No backport to stable for 6b1842e (AI decision).

This reverts a fix to the v4 event frame streaming code (packages/world-vercel/src/frames.ts, frames.test.ts, and the getEventV4 test in events-v4.test.ts), all of which are main-only — verified that none of these files exist on stable. Since both the original fix and this revert touch functionality absent from stable, there is nothing to backport.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

6b1842e10d9f156c7c797261d0338aba9ac569f8

pranaygp added a commit that referenced this pull request Jun 22, 2026
…testing
* origin/main:
Version Packages (beta) (#2540)
perf(core): memoize step return value hydration across inline replays (#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (#2412)
Amend lazy discovery removal changeset (#2560)
[docs] Document minimum SDK version for using hook.getConflict (#2423)
Update default CODEOWNERS (#2556)
Optimize and fix the default eager build mode (#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (#2547)" (#2554)
[core] Turbo mode: fast-path the first invocation (#2526)
Remove lazy discovery from workflow/next (#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (#2547)
feat(docs): add eve and AI SDK to product switcher (#2543)
[vitest] Fix local imports failing to load in test step bundles (#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (#2324)
Version Packages (beta) (#2495)
otel(world-vercel): inject trace context on v4 event requests (#2533)
Bump undici to 7.28.0 (#2534)
Default source maps to dev-on / prod-off (#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (#2527)
perf(core): parallel inline steps + optimistic lazy step start (#2516)
pranaygp added a commit to marcopiraccini/workflow that referenced this pull request Jun 22, 2026
* origin/main: (120 commits)
Version Packages (beta) (vercel#2540)
perf(core): memoize step return value hydration across inline replays (vercel#2472)
[core] Fix abort signal not reflected in subsequent step (replay-ordering flake) (vercel#2412)
Amend lazy discovery removal changeset (vercel#2560)
[docs] Document minimum SDK version for using hook.getConflict (vercel#2423)
Update default CODEOWNERS (vercel#2556)
Optimize and fix the default eager build mode (vercel#2546)
Revert "fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)" (vercel#2554)
[core] Turbo mode: fast-path the first invocation (vercel#2526)
Remove lazy discovery from workflow/next (vercel#2545)
fix(world-vercel): cancel v4 event frame stream on early exit (vercel#2547)
feat(docs): add eve and AI SDK to product switcher (vercel#2543)
[vitest] Fix local imports failing to load in test step bundles (vercel#2351)
[builders] Fix unicode-escape crash in workflow graph extraction (vercel#2324)
Version Packages (beta) (vercel#2495)
otel(world-vercel): inject trace context on v4 event requests (vercel#2533)
Bump undici to 7.28.0 (vercel#2534)
Default source maps to dev-on / prod-off (vercel#2529)
otel: nest linked-mode invocations under the delivery context (route + execution in one trace) (vercel#2527)
perf(core): parallel inline steps + optimistic lazy step start (vercel#2516)
...
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@VaguelySerious@ijjk