一致性hash算法分析
http://note.youdao.com/noteshare?id=798b118db54a829f26627587e5f48cef
http://note.youdao.com/noteshare?id=798b118db54a829f26627587e5f48cef
http://note.youdao.com/noteshare?id=798b118db54a829f26627587e5f48cef
http://note.youdao.com/noteshare?id=798b118db54a829f26627587e5f48cef