GO Feature Flag

Self-Hosted

Open-source self-hosted feature flagging system for safe rollouts

Overview

GO Feature Flag is an open-source feature toggle tool designed to help developers manage feature rollouts, reduce deployment risks, and enable gradual releases. It supports granular targeting rules (user segments, geolocation, versioning), real-time flag updates without redeploys, and multi-environment management. Deployable via Docker, Kubernetes (Helm chart), or binary, it integrates with CI/CD pipelines and offers SDKs for Go, Java, Python, JavaScript, and more. It also includes monitoring capabilities via Prometheus and Grafana for tracking flag usage.

Self-Hosting Resources

Find Official Image on Docker Hub View Source & Docs

Below is a reference structure for docker-compose.yml. ⚠️ Do NOT run blindly. Replace placeholders with official values.

docker-compose.template.yml TEMPLATE


version: '3'
services:
  go_feature_flag:
    image: <OFFICIAL_IMAGE_NAME>:latest
    container_name: go-feature-flag
    ports:
      - "8080:<APP_INTERNAL_PORT>"
    volumes:
      - ./data:/app/data
    restart: unless-stopped

Key Features

Granular targeting rules for user segments
Real-time flag updates without redeployment
Multi-environment support (dev/staging/prod)
Docker/Kubernetes deployable with minimal setup

Frequently Asked Questions

? Is GO Feature Flag hard to install?

No—GO Feature Flag is easy to install. You can deploy it via Docker (single command), use a Helm chart for Kubernetes, or run it as a binary. Basic setups require minimal configuration, and documentation provides clear steps for each deployment method.

? Is it a good alternative to LaunchDarkly?

Yes—for teams prioritizing self-hosting and cost efficiency. It offers core feature flagging capabilities (targeting, gradual rollouts) but lacks some advanced LaunchDarkly features like enterprise-grade SLA, built-in analytics dashboards, or third-party integrations with CRM tools.

? Is it completely free?

Yes—GO Feature Flag is open-source under the MIT License. It’s free to use, modify, and self-host without any licensing fees. There are no hidden costs for core functionality.

Top Alternatives

LaunchDarkly Search Google

Optimizely Feature Experimentation Search Google

Tool Info

Pricing Free/Open Source

Category Software Development - Feature Toggle

Platform Self-Hosted

Pros

⊕ Open-source (MIT License, no costs)
⊕ Rich SDK ecosystem for major languages
⊕ Self-hosted for full data control
⊕ Integration with Prometheus/Grafana for monitoring

Cons

⊖ Requires server management for self-hosting
⊖ Lacks advanced SaaS features like built-in A/B testing analytics
⊖ Limited enterprise support compared to commercial tools