feature-flags

Feature flags (feature toggles) enable/disable functionality without code deployment. I use libraries like Togglz or FF4J for flag management. Flags support A/B testing, canary releases, and emergency kill switches. Strategy pattern determines flag st

I like feature flags that are boring at runtime: reads should be lock-free and refresh should happen in the background. The pattern here stores a JSON flag snapshot in an atomic.Value, which makes reads cheap and race-free. A ticker refreshes the snap