Here are the details of our current problems and configuration: Problems: 1. JBoss Cache Loader throws deadlock error message 2. JBoss Cache doesn't response to any request (i.e. read, write) configuration: 1. Deployed in 3 virtual servers 2. Using pessimistic locking REPEATABLE_READ 3. TCP protocol We are planning to move to UDP protocol if it can solve the issue and of course if UDP is reliable. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168101#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...