Re: [Mediawiki-l] Squid/Varnish and cookies set by Vector and Google Analytics

Many thanks for those helpful answers, Tim and Erik. It was pretty exciting to get emails from people so important to the Wikimedia organization.I ended up following Wikia's approach (it's been tested, after all) and am now seeing a 44%-50% decrease in page load speeds, as measured by Firebug. The recommended code for handling requests with authorization credentials or cookies is to simply pass them to the back-end webserver:         if (req.http.Authorization || req.http.Cookie) {              /* Not cacheable by default */             return (pass);         } Since Wikia and I both deal with cookies that are used only by the client, we simply unset the cookies before execution reaches the above code (though I do this only if the requested URL is in the Mediawiki folder, "/~ptpn/w/"). This is done through the following VCL code:         if(req.url ~ "ptpn/w/"){         # more typically "^/wiki/"                 if(req.http.Cookie ~ "(session|UserID|UserName|Token|LoggedOut)") {                         # dont do anything, the user is logged in                 } else {                         # dont care about any other cookies                         unset req.http.Cookie;                 }         } This seems to work quite well and I'm extremely impressed by Varnish's resource usage. Once I've had more time to test out and learn my way around the code, I'll try to update the Mediawiki documentation on Varnish to reflect the above changes and the changes to VCL since version 3 of Varnish. I may post follow questions then, in particular about which cookies I need to preserve (I'd like to cut the set down so that I can hit the cache after I log out, something I can't do now because cookies remain). Forest