Are server classes possible?

I am thinking like JavaBeans. Here is what I have going on: I have a series of rather database intensive queries that I would like some class to cache and provide access for page loads. I don't care how the information is stored, but I am trying to minimize the database call down to only once an hour at the most. The trick is that I just want the data - like a quazi-db table in memory... Is there something like that I should look at? Somewhere in PEAR? Thank you in advance!