转：Raft一致性选举算法的ppt与视频
http://xiaorui.cc/2016/07/08/%E6%8A%80%E6%9C%AF%E5%88%86%E4%BA%AB-%E3%80%8A%E5%88%86%E5%B8%83%E5%BC%8F%E4%B8%80%E8%87%B4%E6%80%A7%E7%AE%97%E6%B3%95%E5%AE%9E%E7%8E%B0%E5%8E%9F%E7%90%86%E3%80%8B/
http://xiaorui.cc/2016/07/08/%E6%8A%80%E6%9C%AF%E5%88%86%E4%BA%AB-%E3%80%8A%E5%88%86%E5%B8%83%E5%BC%8F%E4%B8%80%E8%87%B4%E6%80%A7%E7%AE%97%E6%B3%95%E5%AE%9E%E7%8E%B0%E5%8E%9F%E7%90%86%E3%80%8B/