Tweaked the caching layer for one of the busiest technology media site on the Internet. using only 2 varnish servers I was able to front millions of hits to 5

Tweaked the caching layer for one of the busiest technology media site on the Internet. using only 2 varnish servers I was able to front millions of hits to 5 web back end nodes running wordpress. The configuration for varnish was tweaked so good that we even considered dropping Akamai.