jgroups 入门 官网地址:http://www.jgroups.org/ 聊天室示例:http://www.jgroups.org/tutorial/html/ch02.html 2.1. JGroups overview2.2. Creating a channel and joining a cluster2.3. The main event loop and sending chat messages2.4. Receiving messages and view change notifications2.5. Trying out the SimpleChat application2.6. Extra credits: maintaining shared cluster state2.7. Conclusion