Tutorial: Build a Real-Time Chat App Using FastAPI and WebSockets in Python

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A developer tutorial published on DEV Community walks through building a real-time chat application using FastAPI, WebSockets, and a MySQL database. The guide covers project setup, data modelling with Pydantic, and database connectivity via the aiomysql library. Two core API routes are constructed — one for sending messages and another for retrieving them — with WebSockets handling live message delivery. FastAPI is highlighted for its high-performance, asynchronous capabilities that make it well-suited for real-time applications. The tutorial is aimed at Python developers looking to implement scalable chat functionality without starting entirely from scratch.

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