What is middleware in Django?

Middleware in Django is a way to process requests globally before they reach the view or after the view has processed them. It allows you to manage cross-cutting concerns like authentication and logging.

To create middleware, follow these steps:

1. Define a middleware class.
2. Implement methods like __init__() and __call__().
3. Add it to the MIDDLEWARE list in settings.py.

Here’s a simple middleware example:

class SimpleMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        # Code before the view
        response = self.get_response(request)
        # Code after the view
        return response