What is a middleware in Django?

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Middleware in Django is a framework of hooks that processes requests and responses globally before they reach the view or after the view has processed them. It’s a lightweight plugin system for altering Django’s input/output processing.

How Middleware Works

Each middleware is a Python class with defined methods that Django calls during request/response processing.

When a request comes in:

• Middleware processes it in top-down order (as listed in MIDDLEWARE).

• Then the view is called.

• The response is processed by middleware in reverse order (bottom-up).

Common Uses of Middleware

• Session management

• User authentication

• Cross-site request forgery (CSRF) protection

• GZip compression

• Custom headers or logging

Add your custom middleware path to the MIDDLEWARE list.

Summary

Middleware in Django is powerful for processing requests and responses globally. It’s essential for managing cross-cutting concerns like security, sessions, and logging, making it a critical part of Django’s request/response lifecycle.

Read More

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