参考:https://blog.hhui.top/hexblog/2018/01/14/Redis%E5%AE%9E%E7%8E%B0%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81%E7%9B%B8%E5%85%B3%E6%B3%A8%E6%84%8F%E4%BA%8B%E9%A1%B9/ https://www.cnblogs.com/xbq8080/p/6757068.html https://www.cnblogs.com/zuolun2017/p/8028208.html