Cache invalidation for a specific class?

Question

Django

I have a profile page where the user changes his mail, name, and so on.
The page is rendered using a TemplateView.
Redis-based caching is also enabled for the site.
Now the problem is:
The user visits the page. Changes, - let's say your email, the request is processed, an inscription is displayed about the successful change of data. Everything seems to be fine.
But then the user decides to refresh the page, and sees the old data. The data was cached.
How do I perform cache invalidation for a single page generated from Common Based Views?

Answer 1

What prevents when updating the model or, for example, after form_valid, resetting the cache by key for this user?