Hello, I just setup a reverse proxy. But I noticed squid always send conditional requests to the backend server even its local cache contains the fresh data. The response headers looks like this: -- HTTP/1.0 200 OK Last-Modified: Wed, 17 03 2010 08:26:15 GMT Cache-Control: max-age=86400 Content-Type: text/plain X-Cache: MISS from ku-office X-Cache-Lookup: HIT from ku-office:81 Via: 1.0 ku-office:81 (squid/2.7.STABLE8) Connection: close -- The backend server listened on port 80 and squid listened on port 81. And my settings of squid are: -- http_port 81 vport=80 defaultsite=localhost cache_peer 127.0.0.1 parent 80 0 no-query no-digest originserver refresh_pattern . 0 20% 4320 -- I'd like to let squid make the conditional request only when the cache entry is expired. What am I missing? Thanks. -- Kai-Chieh Ku
