码农路上

https://cloud.tencent.com/developer/article/1408819
基于redis实现RateLimiter
https://segmentfault.com/a/1190000012947169
基于redis实现分布式锁
https://segmentfault.com/a/1190000012919740

guava其他实用工具https://blog.csdn.net/baoq_v5_java/article/details/45023617

<dependency>  
<groupId>com.google.guava</groupId>  
<artifactId>guava</artifactId>  
<version>18.0</version>  
</dependency>