Any self-respecting developer know the interest of caching for server language like PHP. A web site with lot of server requests need this kind of solution. The Memcaching use a software intalled on the server (download page) which will push all cached data in the RAM's server. It has a big advantage compared to a caching file : the data access time.

An example is included showing how to set up the Zend_Cache_Backend_Memcached object - including parameters and a lifetime - and how to push information into that cache for later use.