mongo 连接池

http://blog.csdn.net/hjxhjh/article/details/12611195 非常好

http://www.cnblogs.com/huangfox/archive/2012/04/01/2428947.html

http://blog.mongolab.com/2013/11/deep-dive-into-connection-pooling/

http://www.tuicool.com/articles/Mzmmmq7

http://www.cnblogs.com/lykbk/p/dfgfdgfdgdf456456456565.html看