WebSockets for Real-Time Communication
Build real-time features in FastAPI with WebSockets: accept connections, exchange messages, broadcast to many clients, and handle disconnects cleanly using async patterns.
From Request/Response to Real-Time
Regular HTTP is request/response: the client asks, the server answers, the connection closes. WebSockets keep a single connection open for full-duplex, real-time messaging. Perfect for chat, live dashboards, and notifications.
Why Async Fits WebSockets
A WebSocket connection lives a long time and is mostly idle waiting for messages. FastAPI's async model lets one worker handle thousands of concurrent connections without blocking.
All lessons in this course
- Async/Await in Python Refresher
- FastAPI and Async Operations
- Executing Background Tasks
- WebSockets for Real-Time Communication