What to Look For in a HTTP Proxy/Cache

I used to be a die-hard Squid aficionado too.

Now I used Varnish, and it's awesome. Far more powerful than Squid, and massively better performance too. Want to drop cookies from some requests/replies? Simple. Want to direct some types of traffic to a different set of backends? Simple.

It's possible to do all these things with Squid using external helpers too, but Varnish makes it so much easier, I'd never go back for a reverse proxy cache.