Mercure

An open, easy, fast, reliable, and battery-efficient solution for real-time communications. Push data updates to web browsers and other HTTP clients using Server-Sent Events (SSE).

Getting Started

1. Visit your domain -- the Mercure Hub welcome page appears
2. Configure JWT keys -- use the Publisher and Subscriber JWT keys to authenticate
3. Start publishing -- send POST requests to the hub to push updates to subscribers

What You Can Do After Deployment

1. Push real-time updates -- publish events to topics that subscribers receive instantly
2. Subscribe to topics -- connect via SSE to receive live data updates
3. Use authorization -- control access with JWT-based publisher and subscriber authentication
4. Enable auto-discovery -- let clients automatically find the hub via Link headers
5. Retrieve missed events -- reconnecting subscribers can catch up on events they missed

Key Features

• Server-Sent Events (SSE) for real-time push notifications
• JWT-based authorization for publishers and subscribers
• Topic-based publish/subscribe model
• Auto-discovery via HTTP Link headers
• Event history and reconnection support
• Built-in BoltDB for embedded storage -- no external database needed
• Written in Go as a single binary for high performance
• Compatible with any programming language or framework

License

AGPL-3.0 -- GitHub