Here is a caching company with six years experience working with network caches. For that, you need caching to increase speed and efficiency. This article covers how to set up a caching server, and gives many different options for software. A free, open-source Web cache for Unix systems. An interesting tool to review the files within your Web cache.
Web Caching Architecture Learn how to create a Web caching server from someone who has done it.
A clear definition of a Web caches and how they are used.