the installation needs to be setup for prod, to have http caches fully working.

while the header Age: does not reach the s-maxage: the object is served from caches, even if it was removed in backend.

test case:

• create any object
• open the object in a frontend, non-legacy mode
• reload, to check that Age: is increasing
• in admin, remove object to trash
• in frontend, keep reloading
• object will be served until Age: >= s-maxage