uwsgi like caching

[Robin Becker]

A python django app running under uwsgi like caching can directly control the uwsgi cache (via decorators etc). This 
requires two nginx sections see eg https://uwsgi-docs.readthedocs.io/en/latest/WebCaching.html.

Is there a way to allow back ends to control the nginx cache directly? I see lots of schemes involving headers and or 
cookies, but I'm not sure they are as simple to understand as the  uwsgi cache approach.
-- 
Robin Becker