Doc:
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 集羣：
http://blog.csdn.net/wlwlwlwl015/article/details/48160433/
Div 實現鼠標拖拽效果：
http://blog.csdn.net/hry1243916844/article/details/77718186