Add loading skeleton to the new trace viewer

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

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Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

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Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

---

📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92

[mitul-s]

What

Adds a loading skeleton for the new trace viewer and a couple of related polish items.

• Loading skeleton (trace-viewer-skeleton.tsx) — mirrors the real viewer's geometry (340px sidebar column, 1px gutter, h-10 rows, h-6 bars, 16px timeline inset, matching paddings/gaps) so there's no layout shift when real data arrives. Wired in via a new loading prop on NewTraceViewer, guarded by events.length === 0 so it doesn't flash over live content during revalidation.
• Detail panel closed by default — ActiveSpanProvider no longer pre-selects the first span; the panel now opens only on user interaction.
• Skeleton polish — no pulse animation, and dimensions tuned to be 1:1 with the real header/rows/bars.

Notes

@workflow/web only changes to pass the loading prop through from run-detail-view.tsx.

🤖 Generated with Claude Code

[changeset-bot]

🦋 Changeset detected

Latest commit: 976bf0b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
@workflow/web-shared	Patch
@workflow/web	Patch
@workflow/cli	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/core	Patch
@workflow/builders	Patch
@workflow/next	Patch
@workflow/nitro	Patch
@workflow/vitest	Patch
@workflow/astro	Patch
@workflow/nest	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/nuxt	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 30, 2026 10:28pm
example-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-astro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-express-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-fastify-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-hono-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nitro-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-nuxt-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-sveltekit-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workbench-vite-workflow	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-docs	Ready	Preview, Comment, Open in v0	May 30, 2026 10:28pm
workflow-swc-playground	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-tarballs	Ready	Preview, Comment	May 30, 2026 10:28pm
workflow-web	Ready	Preview, Comment	May 30, 2026 10:28pm

[github-actions]

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	0.038s (-11.1% 🟢)	1.005s (~)	0.967s	10	1.00x
💻 Local	Express	0.043s (-2.9%)	1.005s (~)	0.962s	10	1.12x
🐘 Postgres	Nitro	0.059s (-37.7% 🟢)	1.012s (-3.0%)	0.952s	10	1.55x
🐘 Postgres	Express	0.060s (+4.0%)	1.013s (~)	0.952s	10	1.57x
💻 Local	Next.js (Turbopack)	0.063s	1.007s	0.944s	10	1.63x
🐘 Postgres	Next.js (Turbopack)	0.067s	1.012s	0.945s	10	1.74x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	0.288s (+14.5% 🔺)	2.200s (-5.7% 🟢)	1.912s	10	1.00x
▲ Vercel	Nitro	0.303s (-26.0% 🟢)	2.466s (-1.7%)	2.162s	10	1.05x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.090s (-3.7%)	2.006s (~)	0.916s	10	1.00x
💻 Local	Express	1.097s (-2.5%)	2.006s (~)	0.909s	10	1.01x
🐘 Postgres	Nitro	1.100s (-3.5%)	2.009s (~)	0.910s	10	1.01x
🐘 Postgres	Express	1.112s (-3.0%)	2.011s (~)	0.898s	10	1.02x
💻 Local	Next.js (Turbopack)	1.128s	2.007s	0.879s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.148s	2.009s	0.861s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.563s (-59.9% 🟢)	3.962s (-32.9% 🟢)	2.400s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.626s (-20.1% 🟢)	4.279s (+11.7% 🔺)	2.653s	10	1.04x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	10.495s (-4.1%)	11.021s (~)	0.526s	3	1.00x
🐘 Postgres	Nitro	10.546s (-3.0%)	11.020s (~)	0.474s	3	1.00x
🐘 Postgres	Express	10.571s (-3.6%)	11.021s (~)	0.451s	3	1.01x
💻 Local	Express	10.572s (-3.2%)	11.024s (~)	0.452s	3	1.01x
💻 Local	Next.js (Turbopack)	10.801s	11.020s	0.219s	3	1.03x
🐘 Postgres	Next.js (Turbopack)	10.874s	11.013s	0.139s	3	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.853s (-41.6% 🟢)	15.528s (-38.2% 🟢)	1.675s	2	1.00x
▲ Vercel	Next.js (Turbopack)	13.873s (-19.9% 🟢)	16.129s (-16.9% 🟢)	2.256s	2	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.729s (-8.3% 🟢)	14.026s (-6.7% 🟢)	0.296s	5	1.00x
💻 Local	Nitro	13.746s (-8.7% 🟢)	14.027s (-12.5% 🟢)	0.280s	5	1.00x
🐘 Postgres	Express	13.753s (-5.7% 🟢)	14.021s (-6.7% 🟢)	0.268s	5	1.00x
🐘 Postgres	Nitro	13.755s (-5.8% 🟢)	14.016s (-6.7% 🟢)	0.261s	5	1.00x
💻 Local	Next.js (Turbopack)	14.357s	15.030s	0.674s	4	1.05x
🐘 Postgres	Next.js (Turbopack)	14.365s	15.016s	0.651s	4	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	22.311s (-57.6% 🟢)	24.861s (-54.5% 🟢)	2.550s	3	1.00x
▲ Vercel	Nitro	22.440s (-65.2% 🟢)	24.716s (-62.9% 🟢)	2.276s	3	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	12.281s (-26.8% 🟢)	13.024s (-23.5% 🟢)	0.743s	7	1.00x
🐘 Postgres	Nitro	12.314s (-11.8% 🟢)	13.017s (-9.0% 🟢)	0.703s	7	1.00x
💻 Local	Express	12.467s (-24.9% 🟢)	13.025s (-23.5% 🟢)	0.558s	7	1.02x
🐘 Postgres	Express	12.531s (-10.5% 🟢)	13.021s (-10.8% 🟢)	0.490s	7	1.02x
💻 Local	Next.js (Turbopack)	13.583s	14.026s	0.443s	7	1.11x
🐘 Postgres	Next.js (Turbopack)	13.683s	14.019s	0.337s	7	1.11x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	29.357s (-92.5% 🟢)	31.409s (-92.1% 🟢)	2.051s	3	1.00x
▲ Vercel	Nitro	31.212s (-92.6% 🟢)	33.406s (-92.1% 🟢)	2.195s	3	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.165s (-8.6% 🟢)	2.007s (~)	0.842s	15	1.00x
💻 Local	Nitro	1.183s (-27.5% 🟢)	2.005s (-3.3%)	0.822s	15	1.01x
🐘 Postgres	Express	1.209s (-4.1%)	2.075s (+3.3%)	0.866s	15	1.04x
💻 Local	Express	1.224s (-17.8% 🟢)	2.005s (~)	0.782s	15	1.05x
🐘 Postgres	Next.js (Turbopack)	1.248s	2.007s	0.759s	15	1.07x
💻 Local	Next.js (Turbopack)	1.340s	2.006s	0.666s	15	1.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.664s (-5.5% 🟢)	4.279s (-1.0%)	1.614s	8	1.00x
▲ Vercel	Next.js (Turbopack)	3.007s (-11.5% 🟢)	5.176s (+4.9%)	2.169s	6	1.13x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.249s (-46.9% 🟢)	2.007s (-33.3% 🟢)	0.758s	15	1.00x
🐘 Postgres	Express	1.286s (-45.5% 🟢)	2.007s (-33.3% 🟢)	0.721s	15	1.03x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.626s	15	1.11x
💻 Local	Express	1.641s (-44.4% 🟢)	2.006s (-41.9% 🟢)	0.365s	15	1.31x
💻 Local	Nitro	1.698s (-46.0% 🟢)	2.006s (-48.4% 🟢)	0.307s	15	1.36x
💻 Local	Next.js (Turbopack)	1.778s	2.149s	0.371s	14	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.705s (-8.6% 🟢)	5.605s (-5.3% 🟢)	1.900s	6	1.00x
▲ Vercel	Next.js (Turbopack)	5.258s (-25.9% 🟢)	7.301s (-18.0% 🟢)	2.043s	5	1.42x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.392s (-60.1% 🟢)	2.009s (-49.9% 🟢)	0.617s	15	1.00x
🐘 Postgres	Nitro	1.401s (-59.7% 🟢)	2.008s (-49.9% 🟢)	0.607s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.638s	2.222s	0.584s	14	1.18x
💻 Local	Next.js (Turbopack)	4.449s	5.178s	0.729s	6	3.20x
💻 Local	Express	4.537s (-45.6% 🟢)	5.012s (-44.5% 🟢)	0.475s	6	3.26x
💻 Local	Nitro	4.677s (-44.0% 🟢)	5.345s (-40.7% 🟢)	0.668s	6	3.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.420s (+53.8% 🔺)	8.369s (+51.2% 🔺)	2.948s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.768s (-24.1% 🟢)	9.514s (-13.2% 🟢)	2.745s	4	1.25x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-6.6% 🟢)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.186s (-5.7% 🟢)	2.009s (~)	0.823s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.264s	2.008s	0.744s	15	1.08x
💻 Local	Next.js (Turbopack)	1.352s	2.006s	0.654s	15	1.15x
💻 Local	Express	1.441s (-23.9% 🟢)	2.006s (-15.1% 🟢)	0.564s	15	1.23x
💻 Local	Nitro	1.872s (~)	2.392s (+2.2%)	0.520s	13	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.729s (+11.0% 🔺)	5.355s (+28.4% 🔺)	2.626s	6	1.00x
▲ Vercel	Next.js (Turbopack)	2.762s (-5.8% 🟢)	4.391s (-5.4% 🟢)	1.630s	7	1.01x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.256s (-46.3% 🟢)	2.008s (-33.3% 🟢)	0.752s	15	1.00x
🐘 Postgres	Express	1.280s (-45.3% 🟢)	2.010s (-33.3% 🟢)	0.730s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.382s	2.008s	0.625s	15	1.10x
💻 Local	Express	1.717s (-45.2% 🟢)	2.006s (-46.7% 🟢)	0.289s	15	1.37x
💻 Local	Nitro	1.894s (-38.2% 🟢)	2.294s (-41.0% 🟢)	0.400s	14	1.51x
💻 Local	Next.js (Turbopack)	2.062s	2.826s	0.764s	11	1.64x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.859s (+19.4% 🔺)	5.564s (+9.6% 🔺)	1.705s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.964s (+26.1% 🔺)	5.826s (+28.8% 🔺)	1.862s	6	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.391s (-60.0% 🟢)	2.009s (-49.9% 🟢)	0.618s	15	1.00x
🐘 Postgres	Express	1.409s (-59.7% 🟢)	2.010s (-49.9% 🟢)	0.600s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.631s	2.074s	0.444s	15	1.17x
💻 Local	Next.js (Turbopack)	4.652s	5.012s	0.360s	6	3.34x
💻 Local	Express	4.671s (-46.9% 🟢)	5.177s (-44.2% 🟢)	0.506s	6	3.36x
💻 Local	Nitro	5.028s (-45.0% 🟢)	5.682s (-43.3% 🟢)	0.654s	6	3.62x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.247s (+3.0%)	7.257s (+6.5% 🔺)	2.010s	5	1.00x
▲ Vercel	Next.js (Turbopack)	6.992s (+3.5%)	10.865s (+27.2% 🔺)	3.874s	4	1.33x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.537s (-34.5% 🟢)	1.006s (~)	0.469s	60	1.00x
💻 Local	Nitro	0.578s (-41.1% 🟢)	1.004s (-8.2% 🟢)	0.427s	60	1.07x
💻 Local	Express	0.588s (-40.3% 🟢)	1.004s (-6.7% 🟢)	0.416s	60	1.09x
🐘 Postgres	Express	0.593s (-29.3% 🟢)	1.042s (+1.8%)	0.448s	58	1.10x
🐘 Postgres	Next.js (Turbopack)	0.806s	1.007s	0.201s	60	1.50x
💻 Local	Next.js (Turbopack)	0.851s	1.004s	0.153s	60	1.58x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	6.352s (-71.2% 🟢)	8.224s (-65.8% 🟢)	1.872s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.722s (-53.7% 🟢)	8.654s (-46.2% 🟢)	1.932s	7	1.06x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.293s (-32.9% 🟢)	2.007s (-4.5%)	0.714s	45	1.00x
🐘 Postgres	Express	1.347s (-31.9% 🟢)	2.008s (-11.1% 🟢)	0.661s	45	1.04x
💻 Local	Nitro	1.449s (-52.2% 🟢)	2.028s (-46.0% 🟢)	0.579s	45	1.12x
💻 Local	Express	1.486s (-50.7% 🟢)	2.005s (-44.1% 🟢)	0.519s	45	1.15x
🐘 Postgres	Next.js (Turbopack)	1.918s	2.076s	0.157s	44	1.48x
💻 Local	Next.js (Turbopack)	2.075s	2.976s	0.901s	31	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.823s (-65.0% 🟢)	16.783s (-59.4% 🟢)	2.960s	6	1.00x
▲ Vercel	Next.js (Turbopack)	15.968s (-67.9% 🟢)	17.976s (-65.2% 🟢)	2.008s	6	1.16x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.628s (-36.0% 🟢)	3.085s (-33.0% 🟢)	0.457s	39	1.00x
🐘 Postgres	Express	2.646s (-33.7% 🟢)	3.059s (-30.0% 🟢)	0.413s	40	1.01x
💻 Local	Nitro	3.139s (-66.2% 🟢)	3.821s (-61.9% 🟢)	0.682s	32	1.19x
💻 Local	Express	3.194s (-65.3% 🟢)	3.944s (-60.6% 🟢)	0.750s	31	1.22x
🐘 Postgres	Next.js (Turbopack)	3.762s	4.011s	0.249s	30	1.43x
💻 Local	Next.js (Turbopack)	4.288s	5.010s	0.723s	24	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	27.581s (-71.5% 🟢)	30.910s (-68.6% 🟢)	3.329s	4	1.00x
▲ Vercel	Next.js (Turbopack)	30.147s (-71.9% 🟢)	33.228s (-69.5% 🟢)	3.081s	4	1.09x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.208s (-26.4% 🟢)	1.006s (~)	0.797s	60	1.00x
🐘 Postgres	Express	0.220s (-22.2% 🟢)	1.006s (~)	0.786s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.258s	1.006s	0.748s	60	1.24x
💻 Local	Nitro	0.434s (-28.3% 🟢)	1.004s (-1.7%)	0.570s	60	2.08x
💻 Local	Express	0.449s (-19.9% 🟢)	1.021s (+1.7%)	0.572s	59	2.15x
💻 Local	Next.js (Turbopack)	0.642s	1.058s	0.416s	57	3.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.241s (+34.9% 🔺)	4.256s (+27.0% 🔺)	2.015s	15	1.00x
▲ Vercel	Next.js (Turbopack)	2.408s (+19.0% 🔺)	4.071s (+7.3% 🔺)	1.664s	15	1.07x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.324s (-34.8% 🟢)	1.006s (~)	0.682s	90	1.00x
🐘 Postgres	Express	0.348s (-31.8% 🟢)	1.006s (~)	0.659s	90	1.07x
🐘 Postgres	Next.js (Turbopack)	0.478s	1.006s	0.528s	90	1.48x
💻 Local	Express	2.042s (-18.7% 🟢)	2.536s (-15.7% 🟢)	0.493s	36	6.31x
💻 Local	Nitro	2.051s (-19.2% 🟢)	2.579s (-14.3% 🟢)	0.528s	35	6.34x
💻 Local	Next.js (Turbopack)	2.361s	3.044s	0.683s	30	7.29x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.759s (+47.5% 🔺)	6.997s (+45.1% 🔺)	2.239s	13	1.00x
▲ Vercel	Next.js (Turbopack)	5.647s (+59.7% 🔺)	7.727s (+48.8% 🔺)	2.080s	12	1.19x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.651s (-17.6% 🟢)	1.007s (~)	0.355s	120	1.00x
🐘 Postgres	Express	0.672s (-17.9% 🟢)	1.006s (-1.1%)	0.334s	120	1.03x
🐘 Postgres	Next.js (Turbopack)	0.979s	1.622s	0.642s	75	1.50x
💻 Local	Express	9.051s (-19.1% 🟢)	9.560s (-19.9% 🟢)	0.509s	13	13.90x
💻 Local	Nitro	9.448s (-15.6% 🟢)	10.025s (-14.0% 🟢)	0.578s	13	14.51x
💻 Local	Next.js (Turbopack)	10.472s	11.300s	0.828s	11	16.08x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.043s (+68.9% 🔺)	15.147s (+61.1% 🔺)	2.104s	8	1.00x
▲ Vercel	Next.js (Turbopack)	13.465s (+30.4% 🔺)	16.107s (+31.1% 🔺)	2.642s	9	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.151s (+478.1% 🔺)	2.005s (+99.6% 🔺)	0.010s (-15.7% 🟢)	2.017s (+98.1% 🔺)	0.866s	10	1.00x
💻 Local	Nitro	1.155s (+440.4% 🔺)	2.005s (+99.6% 🔺)	0.011s (-15.2% 🟢)	2.018s (+98.0% 🔺)	0.863s	10	1.00x
🐘 Postgres	Nitro	1.158s (+465.0% 🔺)	1.999s (+100.0% 🔺)	0.001s (-26.7% 🟢)	2.010s (+98.8% 🔺)	0.852s	10	1.01x
🐘 Postgres	Express	1.177s (+474.0% 🔺)	2.002s (+100.4% 🔺)	0.001s (-25.0% 🟢)	2.010s (+98.8% 🔺)	0.833s	10	1.02x
💻 Local	Next.js (Turbopack)	1.206s	2.003s	0.010s	2.017s	0.811s	10	1.05x
🐘 Postgres	Next.js (Turbopack)	1.259s	2.001s	0.002s	2.010s	0.751s	10	1.09x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.358s (-65.6% 🟢)	4.472s (-48.3% 🟢)	1.538s (+143.5% 🔺)	6.496s (-33.6% 🟢)	4.138s	10	1.00x
▲ Vercel	Nitro	2.411s (-37.1% 🟢)	4.533s (-14.1% 🟢)	13.114s (+1667.1% 🔺)	18.421s (+184.1% 🔺)	16.010s	10	1.02x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.557s (+85.7% 🔺)	2.009s (+98.5% 🔺)	0.010s (+8.1% 🔺)	2.021s (+81.1% 🔺)	0.464s	30	1.00x
🐘 Postgres	Nitro	1.574s (+152.2% 🔺)	1.999s (+98.6% 🔺)	0.004s (-6.5% 🟢)	2.024s (+97.9% 🔺)	0.450s	30	1.01x
🐘 Postgres	Express	1.593s (+152.8% 🔺)	2.009s (+99.6% 🔺)	0.004s (+2.7%)	2.026s (+98.1% 🔺)	0.434s	30	1.02x
🐘 Postgres	Next.js (Turbopack)	1.728s	2.010s	0.004s	2.024s	0.295s	30	1.11x
💻 Local	Express	1.744s (+130.4% 🔺)	2.009s (+95.2% 🔺)	0.010s (+5.1% 🔺)	2.199s (+111.5% 🔺)	0.455s	28	1.12x
💻 Local	Next.js (Turbopack)	1.911s	2.007s	0.011s	2.201s	0.290s	28	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.946s (-79.8% 🟢)	7.619s (-75.3% 🟢)	0.184s (+64.6% 🔺)	8.313s (-73.8% 🟢)	2.367s	8	1.00x
▲ Vercel	Next.js (Turbopack)	6.140s (-63.7% 🟢)	7.636s (-58.1% 🟢)	0.275s (+30.1% 🔺)	8.424s (-55.5% 🟢)	2.285s	8	1.03x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.706s (-26.5% 🟢)	1.051s (-17.7% 🟢)	0.000s (+21.1% 🔺)	1.065s (-18.5% 🟢)	0.359s	57	1.00x
🐘 Postgres	Nitro	0.715s (-26.2% 🟢)	0.994s (-20.3% 🟢)	0.000s (+62.7% 🔺)	1.025s (-18.5% 🟢)	0.310s	59	1.01x
🐘 Postgres	Next.js (Turbopack)	0.818s	1.054s	0.000s	1.061s	0.243s	57	1.16x
💻 Local	Express	1.345s (+9.8% 🔺)	2.012s (~)	0.000s (~)	2.014s (~)	0.669s	30	1.90x
💻 Local	Nitro	1.383s (+13.1% 🔺)	2.014s (~)	0.000s (+133.3% 🔺)	2.016s (~)	0.633s	30	1.96x
💻 Local	Next.js (Turbopack)	1.532s	2.013s	0.000s	2.017s	0.485s	30	2.17x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.491s (-65.7% 🟢)	5.213s (-54.7% 🟢)	0.000s (+Infinity% 🔺)	6.146s (-49.0% 🟢)	2.655s	10	1.00x
▲ Vercel	Nitro	156.095s (+5017.2% 🔺)	157.810s (+3492.6% 🔺)	0.000s (-100.0% 🟢)	158.430s (+3194.5% 🔺)	2.335s	2	44.71x
▲ Vercel	Express	⚠️missing	-	-	-	-	-

🔍 Observability: Next.js (Turbopack) | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.280s (-28.6% 🟢)	2.031s (-5.1% 🟢)	0.000s (-6.7% 🟢)	2.053s (-5.6% 🟢)	0.773s	30	1.00x
🐘 Postgres	Express	1.521s (-14.1% 🟢)	2.222s (+2.0%)	0.000s (+Infinity% 🔺)	2.233s (+1.6%)	0.712s	27	1.19x
🐘 Postgres	Next.js (Turbopack)	1.708s	2.225s	0.000s	2.232s	0.524s	27	1.33x
💻 Local	Express	2.972s (-14.3% 🟢)	3.671s (-9.0% 🟢)	0.001s (+2.9%)	3.676s (-8.9% 🟢)	0.704s	17	2.32x
💻 Local	Nitro	3.089s (-8.8% 🟢)	3.828s (-5.1% 🟢)	0.001s (+52.3% 🔺)	3.844s (-4.8%)	0.754s	16	2.41x
💻 Local	Next.js (Turbopack)	3.260s	3.839s	0.001s	3.842s	0.583s	16	2.55x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.514s (+34.7% 🔺)	7.010s (+30.4% 🔺)	0.000s (-8.3% 🟢)	7.647s (+32.0% 🔺)	2.133s	8	1.00x
▲ Vercel	Express	⚠️missing	-	-	-	-	-
▲ Vercel	Next.js (Turbopack)	⚠️missing	-	-	-	-	-

🔍 Observability: Nitro

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	10/21
🐘 Postgres	Nitro	18/21
▲ Vercel	Nitro	16/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	15/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	14/21

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)

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📋 View full workflow run

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❌ Some benchmark jobs failed:

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

Check the workflow run for details.

[github-actions]

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	1266	0	219	1485
✅ 💻 Local Development	1671	0	219	1890
✅ 📦 Local Production	1671	0	219	1890
✅ 🐘 Local Postgres	1671	0	219	1890
✅ 🪟 Windows	135	0	0	135
✅ 📋 Other	769	0	176	945
Total	7183	0	1052	8235

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro	109	0	26
✅ example	109	0	26
✅ express	109	0	26
✅ fastify	109	0	26
✅ hono	109	0	26
✅ nextjs-turbopack	133	0	2
✅ nextjs-webpack	133	0	2
✅ nitro	109	0	26
✅ nuxt	109	0	26
✅ sveltekit	128	0	7
✅ vite	109	0	26

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable	110	0	25
✅ express-stable	110	0	25
✅ fastify-stable	110	0	25
✅ hono-stable	110	0	25
✅ nextjs-turbopack-canary	116	0	19
✅ nextjs-turbopack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-turbopack-stable-lazy-discovery-enabled	135	0	0
✅ nextjs-webpack-canary	116	0	19
✅ nextjs-webpack-stable-lazy-discovery-disabled	135	0	0
✅ nextjs-webpack-stable-lazy-discovery-enabled	135	0	0
✅ nitro-stable	110	0	25
✅ nuxt-stable	110	0	25
✅ sveltekit-stable	129	0	6
✅ vite-stable	110	0	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	135	0	0

✅ 📋 Other

App	Passed	Failed	Skipped
✅ e2e-local-dev-nest-stable	110	0	25
✅ e2e-local-dev-tanstack-start-	110	0	25
✅ e2e-local-postgres-nest-stable	110	0	25
✅ e2e-local-postgres-tanstack-start-	110	0	25
✅ e2e-local-prod-nest-stable	110	0	25
✅ e2e-local-prod-tanstack-start-	110	0	25
✅ e2e-vercel-prod-tanstack-start	109	0	26

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📋 View full workflow run

[github-actions]

No backport to stable for 0606949 (AI decision).

This commit adds a loading skeleton for the new trace viewer (packages/web-shared/src/components/new-trace-viewer/ and trace-viewer-new.tsx), which does not exist on stable — verified via git ls-tree origin/stable. The run-detail-view.tsx change just passes a loading prop to the NewTraceViewer component, which is also not used on stable. The change specifically builds on main-only behavior and has nothing to backport to.

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

0606949e4a5c79b8382da5ece916501e85202e92