SuperCache is an easy caching API for every project you might need. These classes reduces server load by using cache. There are three types of caching APC , Memcache and FILE /SESSION cache. APC and Memcache uses the PHP Modules so make sure you install them first before using it. File cache doesn’t need anything special.
On the live preview you can see how to use it. I’ve also included phpDoc as html inside the zip file so you don’t have to look at the code to see what it does.