Hello, Just wonder if possible to do the following with Squid (as reverse proxy to Apache) Apache/PHP => Send out expire = A + 10 years => Squid => Send out expire = A + 0 So until my program purege cache from Squid, it will keep cache in Squid as long as possible; on the other hand, client will request the latest content from Squid everytime. The advantage of this is we have full control the the cache freshness (while we can't control browser cache by setting 10 years to the user directly). Any idea? Thanks.