abstract_feature_branch is one of the simplest and most minimalistic “Feature Flags” ruby gems out there. It enables you to get started very quickly by simply leveraging YAML files without having to set up a data store if you do not need it (albeit, you also have the option to use Redis as a very fast in-memory data store).

GitHub: 

Change Log:

1.3.2:

- Ensure better performance, fetch Redis Overrides at app/server startup time only by default while providing option to fetch live by setting AbstractFeatureBranch.feature_store_live_fetching to true

- Do not automatically pre-init AbstractFeatureBranch.feature_store with Redis.new if it was nil as that is a bad default.

- Fix issue with crashing when not including the connection_pool gem manually if needed with a version of redis older than 5