为什么MySQL用B+树:https://mp.weixin.qq.com/s?__biz=MzI1MDk0MjY0MQ==&mid=2247484095&idx=1&sn=66b3365b22be5165de31f2a221245b16&chksm=e9fbc761de8c4e776e116387af02ca2614f34a85460efd8c6f6f4d7192c80acde97a65e80d19&scene=132#wechat_redirect
一条SQL执行慢可能是什么原因:https://mp.weixin.qq.com/s?__biz=Mzg2OTA0Njk0OA==&mid=2247485185&idx=1&sn=66ef08b4ab6af5757792223a83fc0d45&chksm=cea248caf9d5c1dc72ec8a281ec16aa3ec3e8066dbb252e27362438a26c33fbe842b0e0adf47&token=79317275&lang=zh_CN%23rd
高性能MySQL优化建议:https://www.cnblogs.com/huchong/p/10219318.html
MySQL索引原理及查询优化:https://www.cnblogs.com/bypp/p/7755307.html
Java面试问题简单整理:https://mp.weixin.qq.com/s?__biz=Mzg2OTA0Njk0OA==&mid=2247484840&idx=1&sn=cf4611ac290ae3cbb381fe52aa76b60b&chksm=cea24a63f9d5c375215f7539ff0f3d6320f091d5f8b73e95c724ec9a31d3b5baa98c3f5a1012&token=1082669959&lang=zh_CN&scene=21#wechat_redirect