标签:des style blog http io ar color os sp
作者:zhanhailiang 日期:2014-12-02
本文将讲解如何基本Redis Sorted Set实现排行榜功能?
首先,请参见Redis数据类型:http://redis.cn/topics/data-types.html
如上所见,Redis有序集合非常适用于有序不重复数据的存储,例如游戏开发中无处不在的排行榜,如等级排行榜,经验排行榜,积分排行榜,历史筹码排行榜等。如果沿用传统的方法,一般是通过后端的定时任务去跑数据来生成排行榜数据,这种方法一方面无法满足产品对功能实时性的要求,另一方面也一定程度上消耗服务器端有限的资源。
以下举例说明如何实现一个积分排行榜:
1. 生成排行榜:
<?php // vim: set expandtab cindent tabstop=4 shiftwidth=4 fdm=marker: /** * @file initRank.php * @version 1.0 * @author wade * @date 2014-12-02 21:26:11 * @desc 本文讲述如何基本redis有序集合生成游戏排行榜数据 */ $redis = new Redis(); $redis->connect(‘127.0.0.1‘, ‘6379‘); $scoreKey = ‘user:score‘; // init rank $uidList = range(10000, 20000); // 初始化列表 shuffle($uidList); foreach ($uidList as $uid) { $score = mt_rand(1, 10000000); $redis->zAdd($scoreKey, $score, $uid); }
2. 获取排行榜前50名数据:
<?php // vim: set expandtab cindent tabstop=4 shiftwidth=4 fdm=marker: /** * @file initRank.php * @version 1.0 * @author wade * @date 2014-12-02 21:26:11 * @desc 本文讲述如何基本redis有序集合生成游戏排行榜数据 */ $redis = new Redis(); $redis->connect(‘127.0.0.1‘, ‘6379‘); $scoreKey = ‘user:score‘; // get top 50 // zrange user:score -50 -1 withscores $top50List = $redis->zRange($scoreKey, -50, -1, TRUE); var_export($top50List);
查看输出的积分排行榜前50名用户数据如下:
[root@~/wade/codeReview/generate-rank-with-redis-sorted-set]# /usr/local/php/bin/php rank.php array ( 13297 => ‘9951424‘, 17470 => ‘9951938‘, 17397 => ‘9952228‘, 19427 => ‘9953388‘, 16800 => ‘9953838‘, 19573 => ‘9954141‘, 10100 => ‘9954436‘, 11310 => ‘9955425‘, 19995 => ‘9955665‘, 12099 => ‘9959696‘, 11619 => ‘9962507‘, 17208 => ‘9962572‘, 15769 => ‘9963074‘, 19104 => ‘9963218‘, 16343 => ‘9965226‘, 11645 => ‘9965375‘, 13185 => ‘9965506‘, 18588 => ‘9968756‘, 19764 => ‘9968885‘, 13172 => ‘9969011‘, 18031 => ‘9970756‘, 10349 => ‘9971091‘, 14612 => ‘9972515‘, 17465 => ‘9974447‘, 15812 => ‘9974457‘, 10341 => ‘9974813‘, 15415 => ‘9974895‘, 12187 => ‘9974950‘, 12426 => ‘9978519‘, 13607 => ‘9979284‘, 11375 => ‘9980609‘, 10921 => ‘9981700‘, 16360 => ‘9983399‘, 19203 => ‘9984767‘, 18970 => ‘9984776‘, 12227 => ‘9984834‘, 17479 => ‘9986766‘, 19803 => ‘9986937‘, 19509 => ‘9987704‘, 11215 => ‘9988372‘, 18280 => ‘9989817‘, 10092 => ‘9990978‘, 19089 => ‘9992132‘, 11744 => ‘9992693‘, 12533 => ‘9994185‘, 14711 => ‘9994771‘, 18623 => ‘9996266‘, 16919 => ‘9997883‘, 10886 => ‘9998931‘, 11263 => ‘9999083‘, )
源码请见:https://github.com/billfeller/generate-rank-with-redis-sorted-set
标签:des style blog http io ar color os sp
原文地址:http://blog.csdn.net/billfeller/article/details/41685619