How can I make Squid NOT cache some servers or URLs?
In Squid-2, you use the no_cache option to specify uncachable requests. For example, this makes all responses from origin servers in the 10.0.1.0/24 network uncachable: acl Local dst 10.0.1.0/24 no_cache deny Local This example makes all URL’s with ‘.html’ uncachable: acl HTML url_regex .html$ no_cache deny HTML This example makes a specific URL uncachable: acl XYZZY url_regex ^http://www.i.suck.com/foo.html$ no_cache deny XYZZY This example caches nothing between the hours of 8AM to 11AM: acl Morning time 08:00-11:00 no_cache deny Morning In Squid-1.1, whether or not an object gets cached is controlled by the cache_stoplist, and cache_stoplist_pattern options. So, you may add: cache_stoplist my.domain.com Specifying uncachable objects by IP address is harder. The 1.1 patch page includes a patch called no-cache-local.patch which changes the behaviour of the local_ip and local_domain so that matching requests are NOT CACHED, in addition to being fetched directly.
