What typical tasks are solved through the django middleware?

Question

Django

I'm studying middleware, I wrote a count of visits through middleware, but I'm tormented by the question - What typical tasks are solved with the help of an intermediate layer? I can assume that these are various actions on the request arguments and so on, until I ran into some kind of problem that needs to be solved specifically through the middleware. If you can, describe the problems you solved through this mechanism.

Answer 1

1. User identification. For example, custom authentication or setting some permanent cookies
2. Sessions
3. Logging responses/requests
4. Restricting access to multiple URLs with a certain prefix
5. Injection into an HTML response
What we managed to come up with in a minute

Answer 2

The middleway does what needs to be done for multiple routes. Thus, we get rid of code duplication.