In an arbitrary Rails controller will the line below work?
caches_page :show, :expires_in => 1.days
I use memcached, but am confused by how page caching works. Does it use the file system or will it put the pages in memory with memcached?
EDIT: it appears that it will use the file system. So is there a simple way to automatically release the page from cache after a given time or do I have to write a sweeper?