https://feature-flag.comPractical guides to feature flags: rollouts, kill switches, experiments, flag cleanup and the tools that run them.enhttps://feature-flag.com/blog/percentage-rollouts-consistent-hashing/https://feature-flag.com/blog/percentage-rollouts-consistent-hashing/Sun, 15 Nov 2026 00:00:00 GMTHow 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.https://feature-flag.com/blog/stale-feature-flags-cleanup/https://feature-flag.com/blog/stale-feature-flags-cleanup/Sun, 15 Nov 2026 00:00:00 GMTOld feature flags turn into dead code and hidden risk. How to spot stale flags, remove them without breaking production, and stop them from piling up.https://feature-flag.com/blog/what-is-a-feature-flag/https://feature-flag.com/blog/what-is-a-feature-flag/Sun, 15 Nov 2026 00:00:00 GMTFeature 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.https://feature-flag.com/blog/feature-flags-vs-config-vs-environment-variables/https://feature-flag.com/blog/feature-flags-vs-config-vs-environment-variables/Sat, 14 Nov 2026 00:00:00 GMTFeature flags, app configuration and environment variables all change behavior without changing code. When to use each one, with a simple decision table.https://feature-flag.com/blog/kill-switch-feature-flags/https://feature-flag.com/blog/kill-switch-feature-flags/Fri, 13 Nov 2026 00:00:00 GMTA kill switch is a feature flag that turns off a risky part of your system in seconds. Where to put them, how to design them, and how to make sure they work.