"trustin" wrote : MINA also uses ConcurrentLinkedQueue a lot internally. I tried a synchronized circular queue, which is similar to ArrayDequeue, but the performance difference was negligible Looking in the MINA code I can still see CircularQueue used in IOSessionDataStructureFactory.DefaultWriteRequestQueue and also in AbstractIOSession.CloseRequestAwareWriteRequestQueue View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4150603#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...