11

设计模式： http://www.runoob.com/design-pattern/design-pattern-tutorial.html

threadlocal: https://www.cnblogs.com/dolphin0520/p/3920407.html

spring事务：https://blog.csdn.net/trigl/article/details/50968079

https://www.cnblogs.com/justuntil/p/4677924.html