Hi, I am a squid (and http 1.1 headers to be honest) newbie who'd really appreciate help w/squid config and header attributes on the following: I have a server serving images that change dynamically (same URL invoked at different times may return different images). I would like the following behavior: 1. browser sends image request to squid 2. on receiving request from browser, squid always validates with origin server using an Etag (or simply asks for image if no Etag exists) 3. origin server compares Etag received from squid and either responds with either a) "yes, you're up to date" and sends no image data, or b) sends image date with new Etag (to be used by squid during subsequent requests in #2 above). 4. if 3a) then squid returns to browser image date from own cache. if 3b) squid updates own cache with what origin server returned and returns image to browser FWIW, origin servers are several in a cluster behind a virtual domain Possibly naive (and hopefully easy) questions: 1. With what headers should the origin server respond in 3a) and 3b)? In latter case, it seems like something like "Cache-Control: must-revalidate", not sure whether to use s-maxage=0 and/or maxage=0 2. What params should be used in squid config? thanks a lot! -nikita ----- ---------------- Nikita Tovstoles vside.com ---------------- -- View this message in context: http://www.nabble.com/newbie%3A-configuring-squid-to-always-check-w-origin-server-tp20018895p20018895.html Sent from the Squid - Users mailing list archive at Nabble.com.
