On Tue, Oct 16, 2012 at 7:32 AM, Dave Humphrey dave@uesp.net wrote:
Another way to look at it is how many page requests Squid/Varnish can eliminate from Apache. In our MediaWiki Squid has an average cache hit rate of 85% which means the Apache page requests is 6.5x smaller. For small wikis this isn't a big deal but as you scale up reducing Apache requests by a factor of 6 is huge. Since RationalWiki appears to be kinda of in the middle you just have to ask yourself whether page access numbers or the Apache load is more important.
Indeed. If you've got caches in front of Apache, you won't even increment the hit counter on many requests. It's why our reports are pulled from the squid logs themselves.
-Chad