http://nginx.org/en/docs/
start, stop, base proxy config:
http://nginx.org/en/docs/beginners_guide.html
Core functionality:
http://nginx.org/en/docs/ngx_core_module.html#multi_accept
How nginx processes a request:
http://nginx.org/en/docs/http/request_processing.html
Load balancing:
http://nginx.org/en/docs/http/load_balancing.html
Tomcat 集群：
http://blog.csdn.net/wlwlwlwl015/article/details/48160433/
Div 实现鼠标拖拽效果：
http://blog.csdn.net/hry1243916844/article/details/77718186
原文：http://blog.51cto.com/xinzhilian/2095942