以铜为鉴,可正衣冠;以史为鉴,可知兴替;以人为鉴,可明得失。
https://github.com/redisson/redisson
http://redis.cn/topics/distlock.html
https://blog.csdn.net/forezp/article/details/68957681
https://blog.csdn.net/forezp/article/details/70305336