"manik.surtani(a)jboss.com" wrote : * Reference counting. Do you propose any sort of ref counting, if I were to write the same instance to the stream multiple times? No, I hadn't planned on it - what do you have in mind? The instance and class cache would take care of making sure that full class/instance data is written to the stream only one time, if that's what you're getting at. There's no reference counting involved or anything like that though. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4169082#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...