日常复习

1. cookile与session.
   1. https://developer.51cto.com/art/201809/583768.htm
2. arrayList与LinkedList
   1. linkedList   https://mp.weixin.qq.com/s/Gr1kXieJoQol2WuFuHWQaA
   2. arrayList  https://mp.weixin.qq.com/s/9of-ZgM3FGMkg3g4t7Mq4w
   3. CopyOnWriteArrayList  https://mp.weixin.qq.com/s?__biz=MzIxNzQwNjM3NA==&mid=2247488407&idx=1&sn=8518ef70aff7026fd01fd92d8ea0e365&scene=21#wechat_redirect
3. spring AOP
   1. 　　https://www.cnblogs.com/joy99/p/10941543.html