JGroups 是一个的可靠的群组通讯工具。应用程序可以实现加入一个group，发送接收消息给组内所有成员或指定成员，框架会自动跟踪group内事件的通知,这个是个例子-JGroups is a reliable group communication tool. Applications can be achieved by adding a group, to receive messages sent to the group, all members or designated memb