Manual:$wgUseETag

Details
Whether MediaWiki should send an ETag header.

Seems to cause broken behavior with Squid 2.6, see .

Note that nginx removes the ETag header when it does itself the HTTP gzip compression (see for example [http://forum.nginx.org/read.php?2,242807,242809 this thread]) but doesn’t remove it when MediaWiki send itself a gzip version (see Manual:$wgUseGzip).