(no version information, might be only in CVS)
HttpResponse::setCache -- Set cache
Description
staticbool 
HttpResponse::setCache ( bool cache )
   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"!