[Todo] 乐观悲观锁，自旋互斥锁等等

乐观锁、悲观锁、要实践

http://chenzhou123520.iteye.com/blog/1860954

http://chenzhou123520.iteye.com/blog/1863407

http://outofmemory.cn/sql/optimistic-lock-and-pessimistic-lock

自旋锁

http://www.cnblogs.com/hdflzh/p/3716156.html

http://blog.csdn.net/pi9nc/article/details/39177343

Java锁相关

http://blog.csdn.net/Evankaka/article/details/44153709

http://blog.csdn.net/Evankaka/article/details/51866242

http://blog.csdn.net/evankaka/article/details/51932044