Looking into different cache modules for high performance dynamic websites. Looks like many of the big sites (YouTube, Flickr, New York Times and many more) are using memcached which looks to be a very interesting and straight forward piece of software.. Then as I have the luxury of working in a pure J2EE environment I have looked into pure-java caching frameworks as well (like ehcache). This article is an interesting (but maybe not elaborate) example of the two; http://gregluck.com/blog/archives/2007/05/comparing_memca.html