In-Memory Caching: Why We Can't Just Trust the Database to get it Right

Dare Obasanjo has a nice article on caching and why we can't just let the database do it. I love the phrase "it's caching all the way down."

http://www.25hoursaday.com/weblog/2008/11/09/InMemoryCachingWhyWeCantJustTrustTheDatabaseToGetItRight.aspx