參考 ：http://mp.weixin.qq.com/s?__biz=MzA5OTAyNzQ2OA==&mid=207036526&idx=1&sn=b0de410e0d1026cd100ac2658e093160&scene=2&from=timeline&isappinstalled=0#rd
參考： http://mp.weixin.qq.com/s?__biz=MzA5OTAyNzQ2OA==&mid=207255171&idx=1&sn=733c8348c624d81a98a6aa9ec566497b&scene=2&from=timeline&isappinstalled=0#rd
參考：http://www.csdn.net/article/2015-07-30/2825342?reload
推薦一篇文章：http://engineering.linkedin.com/distributed-systems/log-what-every-software-engineer-should-know-about-real-time-datas-unifying