This tutorial explains how to built a cache for dynamic websites to speed up page generation significantly. I recommend you read the introduction, but you can skip ahead to the actual implementation if you have your own reasons. Yes some CMS actually do cache to HDD, but none of them (at least to my knowledge) is capable to completely avoid DB queries while it serves a cached page. My website will remain functional even when the mysql server goes down. Drupal by nature caches to the DB, so this results in a huge speed increase.

	The Introduction and Credits to the Cache. Here I will state the obvious and the less obvious. Why do we need the webcache?
	The Implementation. Here you will learn how to implement the cache, what to look out for and hopefully how to increase the speed of your website significantly.