kfio: http://www.cnblogs.com/Anker/p/3481373.html
list: http://www.cnblogs.com/Anker/p/3475643.html
hash list: http://www.cnblogs.com/wanghetao/archive/2013/04/13/3019156.html
idr: 原理: http://www.ednchina.com/ART_64835_29_0_OA_88333efb.HTM
应用: http://blog.youkuaiyun.com/ganggexiongqi/article/details/6737389