How do I implement a HTML cache for a PHP site?

Question

What is the best way of implementing a cache for a PHP site? Obviously, there are some things that shouldn\'t be cached (for example search queries), but I want to find a go

Answer 1

The best way to go is to use a proxy cache (Squid, Varnish) and serve appropriate Cache-Control/Expires headers, along with ETags : see Mark Nottingham's Caching Tutorial for a full description of how caches work and how you can get the most performance out of a caching proxy.

Also check out memcached, and try to cache your database queries (or better yet, pre-rendered page fragments) in there.