cache设计,以及多核造成的不一致性以及解决方案
http://www.360doc.com/content/11/1013/00/1317564_155625188.shtml
http://blog.csdn.net/muxiqingyang/article/details/6615199
http://wenku.baidu.com/link?url=pLqCBdwhQL8-GBPvEVjfxq9f08psh4R0IRBnmyYM-kkzp15iTGpefHEJncx0RGubRkeZMzp_rOYeKZFZKdr4uGXT21vZBwK0h_GTP4kw_mK