Feature Flags Management System
A lightweight, self-hosted feature flags dashboard for simple, reliable feature toggles. Manage boolean, string, and number flags with role-based permissions, API key access, and complete audit history.
Project Overview
Built as a self-hosted alternative to complex feature flag services, this system provides full control over feature toggles. It supports multiple flag types (boolean, string, number) with a clean, intuitive interface. Admins can manage users, track all changes through detailed audit logs, and generate API keys for external access. The system is built with Next.js 16 and Turso for fast, edge-ready performance.
Development Process
Challenges
The main challenge was balancing simplicity with security. We needed robust API key management with proper rate limiting, secure user authentication with role-based permissions, real-time flag updates without performance hits, and a complete audit trail without bloating the database. Additionally, the system had to support different flag types while maintaining type safety and validation.
Solutions
I built a cryptographically secure API key system using crypto with masked storage for safety. For authentication, I implemented a custom username/password system with bcrypt hashing and salting before database storage, paired with secure session management and role-based middleware. The flag system uses TypeScript for type safety and validates values on both client and server. The audit system logs every change with user attribution and timestamps, using efficient queries to keep performance snappy.
Project Gallery
Tech Stack
Key Features
- Multi-type feature flags (boolean, string, number)
- Role-based access control (admin/user)
- API key management for external access
- Complete audit history & change tracking
- Real-time flag toggling
- User management & permissions
- Rate limiting & security
- RESTful API with validation
