Node.js master/worker 集群模块，用于使用IPTABLES实现sticky session和负载均衡。重载零停机。
特性
- Sticky sessions (via iptables abuse) - suitable for long-polling
- Configurable per-process and cluster memory limits
- Graceful shutdowns and restarts
项目主页：http://www.open-open.com/lib/view/home/1416745890164