Flags for modern development
LaunchDarkly's feature management platform empowers every team to deliver and control software with feature flags. Our flags are versatile, reliable, and powerful.
SDK-powered
LaunchDarkly’s SDKs handle every feature flag update automatically. We support every major programming language, so you can embed LaunchDarkly into your server, client, and mobile applications.
Stored locally
Upon initializing LaunchDarkly, all your feature flag rules get stored locally in-memory. Process millions of flag changes without suffering latency issues.
Real-time updates
When you turn feature flags on/off, our streaming architecture guarantees it happens instantly. LaunchDarkly processes flag updates in 200 milliseconds. No performance lag, no waiting, no stress.
Consistent experience
Elite teams use feature flags to run canary tests, progressively deliver features, migrate to microservices, and more. In all cases, LaunchDarkly disperses every change to every server in real-time, ensuring a consistent experience.
We've been able to roll out new features at a pace that would've been unheard of a couple of years ago.
Michael McKay
Principal Software Engineer
IBM
LaunchDarkly empowers all teams to deliver and control their software.
©2023 Catamorphic Co
Flag types
Do more with feature flags than you ever thought possible.
Boolean
For basic true-false scenarios, quickly create predefined Boolean flags and insert them in your code.
Multivariates
Define two or more custom variations. These variations can be strings, numbers, JSON objects, or JSON arrays.
Temporary
Mark flags as temporary when you intend to remove them after releasing a feature. LaunchDarkly lets you find and scrub those flags with ease.
Permanent
Mark flags as permanent when keeping them in your code long-term. Use them for operational things like disabling non-essential features during a spike in traffic.
Client-side
Enable flags on front-end applications with our client-side SDKs for desktop clients and mobile devices: Windows, Mac, iOS, Android, and more.
It’s simple. We’re able to ship value to customers faster and get feedback sooner, which improves the overall experience.
ATLASSIAN
Bevan Blackie
Development Manager
Organization
Creating feature flags is straightforward. Keeping track of them, however, is not. LaunchDarkly’s intuitive UI and framework for storing flags in projects and environments make flag management painless. And they enable cross-team collaboration to boot!
Code references
Reduce technical debt and maintain good code hygiene. Identify all the locations within your codebase where a particular feature flag is being used. Automatically update those references with every commit to GitHub, Bitbucket, GitLab, or other Git code hosting tool.
Compare and copy
Compare feature flag configuration settings, including targets and variations, between flags set up in two different environments. This is incredibly useful when comparing and cloning rules from a staging environment into your production environment, eliminating costly manual errors.
Debugger
The Debugger shows you a real-time stream of events arriving in LaunchDarkly from your app. Quickly verify that your flags are set up correctly. And if you spot an issue, the Debugger will help you collect additional data and determine if further action is needed.
Built-in & custom attributes
User segments
Percentage rollouts
Prerequisites
Target specific users based on built-in LaunchDarkly user attributes like name, email, and country. Or write complex rules based on a host of custom attributes: entitlements data from your CRM, outputs from a machine learning model analyzing customer usage, or enriched demographic data from a third-party platform.
Built-in & custom attributes
Put users with similar attributes into a cohort (e.g., a beta group), then create feature flag rules for that group. Once you’ve created a cohort, use it again and again for future releases. What’s more, import large user segments from product analytics software providers—and sync changes between LaunchDarkly and the latter.
User segments
Gradually release a feature to a designated percentage of users. Initially, release to, say, only 5% of users. If the feature meets users’ needs and doesn't break production, expand to 10%, then 25%, and so on. Reduce the risk of your releases. And foster collaboration. At each stage, those in Development, Ops, and Product can gather key insights and, collectively, make better-informed decisions.
Percentage rollouts
Prerequisites in LaunchDarkly allow you to create feature flag hierarchies, wherein the triggering of one flag unlocks other flags that control the user experience. Such conditional releases run more smoothly and are easier to manage than those in which flag dependencies are absent. Enjoy granular control over your features. Execute multiple flag changes with a single toggle.
