1.高并发编程之高并发场景：秒杀（无锁、排他锁、乐观锁、redis缓存的逐步演变）

https://blog.csdn.net/u010904188/article/details/83150723

2.java中final 与效率

https://www.cnblogs.com/xjk123/p/9698693.html

转载于:https://www.cnblogs.com/lys-lyy/p/11065501.html