1. 结合ApacheTomcat实现集群和负载均衡 http://blog.csdn.net/kypfos/archive/2008/10/15/3081330.aspx
  2. 类似于QQ游戏百万人同时在线的服务器架构实现 http://net.zdnet.com.cn/network_security_zone/2008/0627/952764.shtml
  3. Openfire中如何配置负载均衡
    http://community.igniterealtime.org/docs/DOC-1471    
  4. Openfire Clustering Plugin Opensource http://community.igniterealtime.org/blogs/ignite/2009/11/10/clustering-plugin-for-openfire-is-now-open-source