We use the bdbje (berkeley db, java ed.) cacheloader here which goes to disk as files.
It's not one file per cache entry though but rather a rolling set of database files.
You have to be a bit careful about cleanup, but it might be something you can try out.
View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165161#...
Reply to the post :
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...