好的官方文档记录

redis官网讲解持久化 | rdb aof 优缺点 怎么用

https://redis.io/topics/persistence

MySQL官网操作符和函数总结

https://dev.mysql.com/doc/refman/5.7/en/func-op-summary-ref.html

mybatis中文文档，太全了、。。

https://mybatis.org/mybatis-3/zh/index.html

Spring 5.2.6英文文档

https://docs.spring.io/spring/docs/5.2.6.RELEASE/spring-framework-reference/

SpringMVC官方文档

https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#mvc

SpringBoot官方文档

https://docs.spring.io/spring-boot/docs/2.3.1.RELEASE/reference/htmlsingle/#legal
https://docs.spring.io/spring-boot/docs/2.3.1.RELEASE/reference/html/index.html