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I've spend the last few weeks learning about Prevayler in my off hours. Originally, I intended on using it to create the long promised resource directory for the site. I will admit that it performs as advertised. However, there is one BIG problem with using it versus a database. You lose the ability to define queries in sql. There may be other querying technologies I could bolt on top of Prevayler (please email me if you know of any). I'll admit I haven't investigated that option. However, in the near term I'm going to go back to developing with a database backing. Perhaps I find writing all my own queries so annoying because I always took easily being able to express them for granted before.