FF4J Reviews

FF4J Description

Easy to use feature flags in Java Allow. You can enable and disable features at runtime. Multiple paths can be implemented in your code using predicates that are dynamically evaluated (if/then/else). Allow features that are not limited to flag values, but also allow access with roles or groups (Canary Release). Spring Security supports different frameworks. To determine if a feature has been enabled, you can implement custom predicates (Strategy pattern). Some are available out of the box: Expression based, Time based, White/Black lists. Connect external sources like a Drools rules engine. Use annotations instead of nested if statements to keep your code clean and readable. Spring AOP targets are implemented at runtime using feature statuses. Ff4j evaluates each feature execution. This allows it to collect and record events, metrics, and create nice dashboards.