Redis和Mysql相关内容第一次更新

README.md

@@ -42,6 +42,12 @@
 - ### Spring相关
   [Spring学习与面试](https://github.com/Snailclimb/Java_Guide/blob/master/%E4%B8%BB%E6%B5%81%E6%A1%86%E6%9E%B6/Spring%E5%AD%A6%E4%B9%A0%E4%B8%8E%E9%9D%A2%E8%AF%95.md)
 
+# 数据存储
+- ### Mysql
+  [Mysql学习与面试](https://github.com/Snailclimb/Java_Guide/blob/master/%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8/Mysql.md)
+- ### Redis
+  [Redis学习与面试](https://github.com/Snailclimb/Java_Guide/blob/master/%E6%95%B0%E6%8D%AE%E5%AD%98%E5%82%A8/Redis.md)
+
 # 架构
 - ### 分布式相关
     [分布式学习与面试](https://github.com/Snailclimb/Java_Guide/blob/master/%E6%9E%B6%E6%9E%84/%E5%88%86%E5%B8%83%E5%BC%8F.md)