<?php/** * PHP基于Redis計數(shù)器類 * Date:  2017-10-28 * Author: fdipzone * Version: 1.0 * * Descripton: * php基于Redis實(shí)現(xiàn)自增計數(shù)，主要使用redis的incr方法，并發(fā)執(zhí)行時保證計數(shù)自增唯一。 * * Func: * public incr  執(zhí)行自增計數(shù)并獲取自增后的數(shù)值 * public get   獲取當(dāng)前計數(shù) * public reset  重置計數(shù) * private connect 創(chuàng)建redis連接 */class RedisCounter{ // class start  private $_config;  private $_redis;  /**   * 初始化   * @param Array $config redis連接設(shè)定   */  public function __construct($config){    $this->_config = $config;    $this->_redis = $this->connect();  }  /**   * 執(zhí)行自增計數(shù)并獲取自增后的數(shù)值   * @param String $key 保存計數(shù)的鍵值   * @param Int  $incr 自增數(shù)量，默認(rèn)為1   * @return Int   */  public function incr($key, $incr=1){    return intval($this->_redis->incr($key, $incr));  }  /**   * 獲取當(dāng)前計數(shù)   * @param String $key 保存計數(shù)的健值   * @return Int   */  public function get($key){    return intval($this->_redis->get($key));  }  /**   * 重置計數(shù)   * @param String $key 保存計數(shù)的健值   * @return Int   */  public function reset($key){    return $this->_redis->delete($key);  }  /**   * 創(chuàng)建redis連接   * @return Link   */  private function connect(){    try{      $redis = new Redis();      $redis->connect($this->_config['host'],$this->_config['port'],$this->_config['timeout'],$this->_config['reserved'],$this->_config['retry_interval']);      if(empty($this->_config['auth'])){        $redis->auth($this->_config['auth']);      }      $redis->select($this->_config['index']);    }catch(RedisException $e){      throw new Exception($e->getMessage());      return false;    }    return $redis;  }} // class end?>

<?phpRequire 'RedisCounter.class.php';// redis連接設(shè)定$config = array(  'host' => 'localhost',  'port' => 6379,  'index' => 0,  'auth' => '',  'timeout' => 1,  'reserved' => NULL,  'retry_interval' => 100,);// 創(chuàng)建RedisCounter對象$oRedisCounter = new RedisCounter($config);// 定義保存計數(shù)的健值$key = 'mycounter';// 執(zhí)行自增計數(shù)，獲取當(dāng)前計數(shù)，重置計數(shù)echo $oRedisCounter->get($key).PHP_EOL; // 0echo $oRedisCounter->incr($key).PHP_EOL; // 1echo $oRedisCounter->incr($key, 10).PHP_EOL; // 11echo $oRedisCounter->reset($key).PHP_EOL; // 1echo $oRedisCounter->get($key).PHP_EOL; // 0?>

011110

<?phpRequire 'RedisCounter.class.php';// redis連接設(shè)定$config = array(  'host' => 'localhost',  'port' => 6379,  'index' => 0,  'auth' => '',  'timeout' => 1,  'reserved' => NULL,  'retry_interval' => 100,);// 創(chuàng)建RedisCounter對象$oRedisCounter = new RedisCounter($config);// 定義保存計數(shù)的健值$key = 'mytestcounter';// 執(zhí)行自增計數(shù)并返回自增后的計數(shù)，記錄入臨時文件file_put_contents('/tmp/mytest_result.log', $oRedisCounter->incr($key).PHP_EOL, FILE_APPEND);?>

ab -c 15 -n 150 http://localhost/test.php

ab -c 15 -n 150 http://localhost/test.phpThis is ApacheBench, Version 2.3 <$Revision: 1554214 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/Licensed to The Apache Software Foundation, http://www.apache.org/Benchmarking home.rabbit.km.com (be patient).....doneServer Software:    nginx/1.6.3Server Hostname:    localhostServer Port:      80Document Path:     /test.phpDocument Length:    0 bytesConcurrency Level:   15Time taken for tests:  0.173 secondsComplete requests:   150Failed requests:    0Total transferred:   24150 bytesHTML transferred:    0 bytesRequests per second:  864.86 [#/sec] (mean)Time per request:    17.344 [ms] (mean)Time per request:    1.156 [ms] (mean, across all concurrent requests)Transfer rate:     135.98 [Kbytes/sec] receivedConnection Times (ms)       min mean[+/-sd] median  maxConnect:    0  0  0.2   0    1Processing:   3  16  3.2   16   23Waiting:    3  16  3.2   16   23Total:     4  16  3.1   17   23Percentage of the requests served within a certain time (ms) 50%   17 66%   18 75%   18 80%   19 90%   20 95%   21 98%   22 99%   22 100%   23 (longest request)

生成的總計數(shù)wc -l /tmp/mytest_result.log   150 /tmp/mytest_result.log生成的唯一計數(shù)sort -u /tmp/mytest_result.log | wc -l   150