# #239 Feature flags and A/B testing

- URL: https://superails.com/posts/239-big-boys-use-feature-flags
- Published: 2025-08-02
- Duration: 12:19
- Access: subscribers only
- Topics: admin features, Gem

Any mature Rails app needs feature flags.

- Usecase #1: Product & QA people can test features before releasing them. They can enable/disable features without developer involvement.
- Usecase #2: A/B testing (partially release features)

Flipper is a great gem to manage features. It provides handy backend methods, but most importantly a great UI to manage features.

- [Flipper docs]([member-only link]
- [PR adding Flipper to a Rails app]([member-only link]
- [Text walkthrough]([member-only link]


## Transcript

Available to subscribers at https://superails.com/posts/239-big-boys-use-feature-flags