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A Starlette middleware guide for FastAPI and Python developers

calendar_today August 28, 2026 person Aditya Raj domain honeybadger

Starlette middlewares let you apply logging, auth, and CORS across every route in a web app without duplicating code. This article covers Starlette’s built-in middlewares, building custom ones with pure ASGI and BaseHTTPMiddleware, and the execution-order rules that keep your FastAPI applications secure and fast. Read on to learn how to build and order Starlette middlewares the right way.

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