Whether it should be attempted to cache the entity.
This will result in necessary caching headers and checks of clients
If-Modified-Since
and If-None-Match
headers. If one of those headers
matches a 304 Not Modified
status code will be issued.
Note:
If you're using sessions, be sure that you set session.cache_limiter
to something more appropriate than "no-cache"!
Parameters
- cache
whether caching should be attempted
Return Values
Returns TRUE
on success or FALSE
on failure.