分享一篇关于php中缓存Memcache的Queue的用法,Memcache是一种缓存技术,可以提升程序的性能减轻服务器的压力,代码如下:
- <?php
- class MQ{
- public static $client;
- private static $m_real;
- private static $m_front;
- private static $m_data = array();
- const QUEUE_MAX_NUM = 100000000;
- const QUEUE_FRONT_KEY = '_queue_item_front';
- const QUEUE_REAL_KEY = '_queue_item_real';
- public static function setupMq($conf) {
- self::$client = memcache_pconnect($conf);
- self::$m_real = memcache_get(self::$client, self::QUEUE_REAL_KEY);
- self::$m_front = memcache_get(self::$client, self::QUEUE_FRONT_KEY);
- if (!isset(self::$m_real) || emptyempty(self::$m_real)) {
- self::$real= 0;
- }
- if (!isset(self::$m_front) || emptyempty(self::$m_front)) {
- self::$m_front = 0;
- }
- return self::$client;
- }
- public static function add($queue, $data) {
- $result = false;
- if (self::$m_real < self::QUEUE_MAX_NUM) {
- if (memcache_add(self::$client, $queue.self::$m_real, $data)) {
- self::mqRealChange();
- $result = true;
- }
- }
- return $result;
- }
- public static function get($key, $count) {
- $num = 0;
- for ($i=self::$m_front;$i<self::$m_front + $count;$i++) {
- if ($dataTmp = memcache_get(self::$client, $key.$i)) {
- self::$m_data[] = $dataTmp;
- memcache_delete(self::$client, $key.$i);
- $num++;
- }
- }
- if ($num>0) {
- self::mqFrontChange($num);
- }
- return self::$m_data;
- }
- private static function mqRealChange() {
- memcache_add(self::$client, self::QUEUE_REAL_KEY, 0);
- self::$m_real = memcache_increment(self::$client, self::QUEUE_REAL_KEY, 1);
- }
- private static function mqFrontChange($num) {
- memcache_add(self::$client, self::QUEUE_FRONT_KEY, 0);
- self::$m_front = memcache_increment(self::$client, self::QUEUE_FRONT_KEY, $num);
- }
- public static function mflush($memcache_obj) {
- memcache_flush($memcache_obj);
- }
- public static function Debug() {
- echo 'real:'.self::$m_real."<br>/r/n";
- echo 'front:'.self::$m_front."<br>/r/n";
- echo 'wait for process data:'.intval(self::$m_real - self::$m_front);
- echo "<br>/r/n";
- echo '<pre>';
- print_r(self::$m_data);
- echo '<pre>';
- }
- }
- define('FLUSH_MQ',0);
- define('IS_ADD',0);
-
- $mobj = MQ::setupMq('127.0.0.1','11211');
- if (FLUSH_MQ) {
- MQ::mflush($mobj);
- } else {
- if (IS_ADD) {
- MQ::add('user_sync', '1test');
- MQ::add('user_sync', '2test');
- MQ::add('user_sync', '3test');
- MQ::add('user_sync', '4test');
- MQ::add('user_sync', '5test');
- MQ::add('user_sync', '6test');
- } else {
- MQ::get('user_sync', 10);
- }
- }
- MQ::Debug();
- ?>
好了下面来看看用法,代码如下:
- MQ::setupMq('127.0.0.1','11211');
- MQ::add($key, $value);
- MQ::add($key, $value);
- MQ::add($key, $value);
- MQ::add($key, $value);
- MQ::add($key, $value);
- MQ::add($key, $value);
- MQ:get($key, 10);
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