3 ms·

The team uses them. Outside of looking for bugs I still have not been convinced that it is useful to check if blue versus green button has useful conversion rat

• capableweb 5y ago
  That's A/B testing, not feature flags. Check https://news.ycombinator.com/item?id=30115276 https://news.ycombinator.com/item?id=30115276 for a description of how feature flags are used.
  • the-alt-one 5y ago
    A/B testing can be done with feature flags. Gradual rollout, specific customer opt-in, and so on.
    • capableweb 5y ago
      I guess you could do A/B testing with feature flags but honestly, it won't be any good. If you want a good answer if to go with A or B, you want to have many data points, not just from one specific customer. Gradual rollout and specific customer opt-in to certain features can certainly be done with feature flags, I wouldn't call that A/B testing unless you're running experiments and reaching a conclusion that A is better than B (or vice-versa).
      • ampersandy 5y ago
        You can totally implement A/B tests on top of a feature-flag framework. Your “pass” function should be hashed on the User ID/Cookie/whatever and then you can distribute users into pass/fail. You should do this anyway for reproducibility. If you log whether they passed/failed and then have metrics, you compute experimental results.