General Feature Flags

A robust, multi-provider feature flag system for Flutter. Professional, extensible, and corporate-ready.

Overview

general_feature_flags is a highly modular feature flagging solution designed for large-scale Flutter applications. It supports multiple providers, rollout strategies, user targeting, and experiments.

Motivation

Most feature flag solutions are tied to a single vendor (like Firebase Remote Config or LaunchDarkly). general_feature_flags provides a unified interface to use multiple providers simultaneously, with priority-based resolution and a clean 3-layer architecture.

Architecture

  1. CORE: The engine, logic, and interfaces (general_feature_flags).
  2. ADAPTERS: Vendor-specific implementations (Firebase, LaunchDarkly, Redis, HTTP).
  3. EXTENSIONS: Custom implementations for your specific needs.

Comparison

Feature Firebase Remote Config LaunchDarkly general_feature_flags
Multi-provider No No Yes
Fallback logic Limited Yes Advanced
Offline-first Yes Yes Yes
A/B Testing Yes Yes Yes
Custom API No No Yes

Quick Start

final flags = FeatureFlagsClient();

await flags.initialize(
  providers: [
    FirebaseRemoteConfigProvider(...),
    HttpProvider(url: "https://api.myapp.com/flags"),
  ],
  userId: "user_123",
);

if (flags.isEnabled("new_feature")) {
  // Show new feature
}

Features

  • Multi Provider: Merge flags from different sources.
  • Priority: Define which provider takes precedence.
  • Rollout: Percentage-based releases.
  • Targeting: Target specific users based on attributes.
  • Experiments: A/B testing support.
  • Cache: Memory and persistent cache support.
  • Debug: Override flags during development.

Documentation

For detailed documentation, visit rivendev.app.

Roadmap

  • Supabase Adapter
  • ConfigCat Adapter
  • GraphQL Provider
  • Admin Dashboard UI (Flutter)

License

MIT - Rivendev.app

Libraries

general_feature_flags