This repository was archived by the owner on Jun 14, 2024. It is now read-only.
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Repository files navigation

Caution

This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.

Table of Contents

  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation

Welcome to the new home of our Feature Flagging Guide.

LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.

About LaunchDarkly

LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:

  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.

LaunchDarkly provides feature flag SDKs for

Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!

Integrations

LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:

Community

Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.

Known issues

For all known issues, visit the LaunchDarkly support page for help.

Contributions

Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.

When contributing please ensure that you do the following:

  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.

About

The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.

Topics

booksfeature-flagsfeature-toggleslaunchdarkly

Resources

Readme

Security policy

Security policy
Activity
Custom properties

Stars

276 stars

Watchers

2 watching

Forks

31 forks
Report repository

Releases

Packages

Used by

Contributors

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content

This repository was archived by the owner on Jun 14, 2024. It is now read-only.

BranchesTags
Repository files navigation
Caution
This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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This repository was archived by the owner on Jun 14, 2024. It is now read-only.

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This repository is archived. For up-to-date information on the topics covered here, visit docs.launchdarkly.com.
Table of Contents
  1. Introduction
  2. Uses
  3. Getting Started
  4. Cleaning Up
  5. Best Practices
  6. Flags vs Branching
  7. Blue-Green Deployments
  8. Database Migrations
  9. Implementation
Welcome to the new home of our Feature Flagging Guide.
LaunchDarkly serves 4 billion feature flags daily to help software teams build better software, faster. LaunchDarkly gives you the power to separate feature rollout from code deployment and manage feature flags at scale. Ultimately, you can deliver faster, more personalized software with less risk.
About LaunchDarkly
LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
LaunchDarkly provides feature flag SDKs for
Many of the specific uses for LaunchDarkly’s features are covered within the uses section of our guide, although we recommend you start with the first chapter for a comprehensive overview. For other questions, technical or otherwise, feel free to visit our site’s FAQ or our support page!
Integrations
LaunchDarkly has numerous software integrations that are designed to make your experience smoother when using feature flags in combination with other products. These include:
Community
Our community is open to anyone with interest in feature flagging or dark launching software! Feel free to head to any of the following links for more information, and a warm welcome into the world of dark launching.
Known issues
For all known issues, visit the LaunchDarkly support page for help.
Contributions
Our guide and SDKs are all open source, and we encourage pull-requests and other contributions from the community. If you have a suggestion or correction for our guide feel free to commit a pull request on this repo and it will be reviewed.
When contributing please ensure that you do the following:
  1. Read through our Contributor’s Guide before submitting any SDK pull requests.
  2. Create a new branch for each different change.
About
The guide to decoupling feature rollout from code deployment for feature flag-driven development. Feature flags give a software organization the power to reduce risk, iterate quicker, and get more control.
Topics
booksfeature-flagsfeature-toggleslaunchdarkly
Resources
Readme
Security policy
Security policy
Activity
Custom properties
Stars
276 stars
Watchers
2 watching
Forks
31 forks
Report repository
Releases
Packages
Used by
Contributors