Real-Time Chat Application with FastAPI and WebSockets

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Have you ever been in a chat room or played an online game where responses were instantaneous? That’s the magic of WebSockets. Unlike traditional HTTP, where a request is sent and a response is received, WebSockets allow for persistent, two-way communication between a client and server. This article will explore WebSockets, their value, and how to use them in FastAPI.

If you’re here for the code, here’s the GitHub Link

What are WebSockets?

• WebSockets are a communication protocol that operates over TCP. They enable real-time, full-duplex communication between a client and server.
• Once a WebSocket connection is established, data can be sent and received without repeated HTTP requests.

Key Features:

• Persistent connection: No need to repeatedly open and close connections.
• Low latency: Ideal for applications requiring instant updates.
• Full-duplex: Both client and server can send messages independently.

When and Why Use WebSockets