Feature flag guides
How feature flags work, from the first toggle to progressive delivery at scale.
- Guides3 min read
Percentage rollouts: how feature flags keep a user in the same group
How a feature flag turns a feature on for exactly 10% of users, and keeps each user in their group as you go to 50% and 100%. With TypeScript code.
- Guides4 min read
What is a feature flag? A practical guide
Feature flags let you ship code switched off and turn it on without a deploy. How they work, the four kinds of flags, and the mistakes to avoid.
- Guides3 min read
Feature flags vs. configuration vs. environment variables
Feature flags, app configuration and environment variables all change behavior without changing code. When to use each one, with a simple decision table.