This tutorial will explain what caching means, why it’s important to use, and demonstrate a few different examples. Even though Zend_Cache is being used, the examples are not implementing the Zend Framework so users not familiar with the framework can still follow. The examples will cover how to cache a variable, a recordset from a database query, and an entire page. It briefly mentions the different caching backends but focuses only of the ‘File’ backend.

The tutorial can be found at:
http://www.joeyrivera.com/2009/caching-using-phpzend_cache-and-mysql/