FunWithFlags

Judgement

What it is

Building block

What it does

An Elixir feature flag library with an ETS cache in front of Redis or Ecto storage, supporting actor, group and percentage gates.

Adopt it when

You build in Elixir or Phoenix and want flags without an external service.

Watch out

One maintainer and quiet since September 2025.

Ready for

Production-ready

Runs as

Library

Built with

Elixir, Redis and Ecto

How established

Established: started 9 years ago, no tagged release yet.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: FunWithFlags → Elixir → OTP → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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