Squid

[http://www.squid-cache.org/ Squid] is a high-performance proxy server that can also be used as a HTTP accelerator for the webserver.

(WMF has switched to using Varnish for HTTP-layer caching in preference to Squid but the term remains.)

See:


 * reverse>Special:MyLanguage/Squid Reverse Proxy|Squid Reverse Proxy


 * squid>Special:MyLanguage/Manual:Squid caching|Manual:Squid caching

and associated configuration variables:

and hook: