http://www.redis.net.cn/tutorial/3501.html
https://www.w3cschool.cn/redis/redis-install.html
https://www.yiibai.com/redis/
http://www.redis.cn/documentation.html
http://www.maiziedu.com/course/337/
http://redisdoc.com
http://www.runoob.com/redis/redis-sets.html
https://blog.csdn.net/liqingtx/article/details/60330555
https://www.cnblogs.com/wangyuyu/p/3786236.html
