ittybittyfeaturechecker

README

ittybittyfeaturechecker

A minimalist, opinionated feature switch service.

Feature Switches

This service allows applications to check if a given feature is enabled or not. Typically this is used for gating access to experimental new features. This is the primary use case for this service.

Minimalist and Opininated

Features are stored in memory and loaded from a json file. There is no database or means of adding or updating feature switches while the service is running.

This simplifies deployment and operations since there is no external database to setup and maintain.

Feature changes should be done via a PR/deployment as part of your normal release processes. This keeps a single source of truth and various environments in sync. No more, "oops I forgot to add the feature to production".

Kill switches/scramming a feature is best checked for on the client side.

Features are defined using expressions that need to evaluate to true or false.