Could you provide some context? In other words, where did you see the term "hybrid connection model". To achieve the number of concurrent connections you mention you usually need to run multiple jbossas instances. For testing, you could use JMeter or Grinder, or you could go with one of a number of commercial products (whose names escape me). View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4184259#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...