优秀博客文章
java基础
1.Java 集合框架综述，这篇让你吃透！
https://www.cnblogs.com/xiaoxi/p/6089984.html
mysql
1. 数据库链接池终于搞对了，这次直接从100ms优化到3ms！
https://mp.weixin.qq.com/s?__biz=MzU0OTk3ODQ3Ng==&mid=2247488729&idx=1&sn=74fd107804544bf793ce68830c29db83&chksm=fba6fcdaccd175ccf988a706b68a1eaba44f98d2b60931ab952a92a25acc48db27c4b2176ad9&scene=0&xtrack=1&key=650b72d92d1748c771ffb2e25bf9f4522556c48554d17e3ff80cbb71a027bca5248f6e580bcdb3997e9151107d92dd3b57e5b7c6895fa364de5715e96831a886a2527c1488440813e4910a32545d732f&ascene=1&uin=MjAzOTkwMzU2MA%3D%3D&devicetype=Windows+10&version=62060841&lang=zh_CN&exportkey=Ac325lK6CsGaEQ6vqzZjve0%3D&pass_ticket=Xr3IolFjWUSPBk9yyx%2FaHFuv7TEDOsCU0y36tX1X%2BFLkZQ4YFWE0FfyEZDQos%2BUG
加密解密
程序员必备基础：加签验签
https://mp.weixin.qq.com/s?__biz=Mzg2MjEwMjI1Mg==&mid=2247497978&idx=3&sn=70204a9ffddc5459cce390bf915e1cc4&chksm=ce0e4f79f979c66f2f390ed5814a2051c62087182f4fb63819087313c938b9cd7a7212d08487&scene=0&xtrack=1&key=900419faf7d15cdcb419e102d1fc79d7fded085992f545e5fdd6be3fdc4da44f407671db1770638ac71ee722054d60073659248ae31ac090763787cf201bcd7cdef4a4638a557e91b18a3acd56221303&ascene=1&uin=MjAzOTkwMzU2MA%3D%3D&devicetype=Windows+10&version=62060841&lang=zh_CN&exportkey=AY0z18OhaQwC3daqns84vbw%3D&pass_ticket=Xr3IolFjWUSPBk9yyx%2FaHFuv7TEDOsCU0y36tX1X%2BFLkZQ4YFWE0FfyEZDQos%2BUG
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