"svadu" wrote : I wouldn't be surprised if you don't get very high performance using microcontainer because you're not using full JEE capabilities of application server. I really don't see how MC would explain performance gain between plain jsf and seam. But I've never used MC. Could you explain MC benefits for my use case ? "svadu" wrote : Was the JSF (without Seam) application a 'full' equivalent of a Seam application? Yes, I've just removed Seam from the spring sample which is included in Seam 2.0.0 GA distribution. "svadu" wrote : I don't have hard numbers but in my case I had performance improved (didn't need to measure to see improvement) a lot mostly due to moving lot's of stuff from request (session scope was not acceptable) scope (JSF application) to conversation scope which reduced amount of database trips a lot. I fully agree that it would increase my performance if I was using session replication in db. But since I'm not using session replication and I don't have session size problems, i don't see the benefits. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4111033#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...