A cache profile specifies how long items should be held in the cache. It also describes to the caching system how to determine ...

A cache profile specifies how long items should be held in the cache. It also describes to the caching system how to determine whether a cached page element is in fact valid for other requests for the same element from different users.
You can specify different cache profiles to use for anonymous and authenticated users. This optimizes the use of the cache based on the authentication methods allowed on the site.
Page output cache profiles specifically affect portal publishing pages.