How to tell the browser not to cache part of the page (Last-Modified)?

Question

PHP

For example, I have a login form in the header of my page. If the user logs in, the page is reloaded and the user can see their name. But if the page is already in the cache (Last-Modified, IfModifiedSince) and we enter our personal account, then after reloading the page, the user will not see the name. Perhaps there are some ways to tell the browser not to cache certain blocks on the page (like attributes for div meta="not-cache" tags) or are there other ways around my problem?

Answer 1

To be honest, with successful authorization, you do not have the right to give the same Last-Modified, since the page has changed. In general, if you do not have a news blog, then I probably would not recommend you to bother much with this headline - there will be more problems than profit. Better optimize.

Answer 2

only casters with ajax