[05:33:36] <svip>	 Hello.  Does MediaWiki modify the Cache-Control header by default?
[05:34:06] <svip>	 I am trying to get a Varnish cache server working in front of my MediaWiki, but it keeps sending cache-control to have a max-age of 0.
[05:35:46] <svip>	 And no, it's not because the server is sending cookies.
[05:42:23] <svip>	 Ah, I needed to set $wgUseCdn to true.