What is Django's middleware and how can you create your own?

Middleware in Django is a framework of hooks into Django's request/response processing. It’s a way to process requests globally before they reach the view or after the view has processed them.

To create your own middleware, follow these steps:

1. Create a new Python file, e.g., middleware.py in your app directory.
2. Define a middleware class with __init__, __call__, and/or process_request methods.

Example of a simple logging middleware:

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

    def __call__(self, request):
        print(f'Before processing request: {request.path}')
        response = self.get_response(request)
        print(f'After processing request: {response.status_code}')
        return response

Finally, add your middleware to the MIDDLEWARE setting in settings.py.