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php中memcache读取数据批量写入mysql

May 25, 2016 pm 04:38 PM

用 Memcache 可以缓解 php和数据库压力下面代码是解决高负载下数据库写入瓶颈问题,遇到最实用的:写入ip pv uv的时候,用户达到每分钟几万访问量,要记录这些数据,实时写入数据库必定奔溃.

用以下技术就能解决,还有如用户注册,同一时间断内,大量用户注册,可以缓存后一次性写入到数据库,代码如下:

<?php
public function cldata() {
    $memcache_obj = new Memcache;
    $memcache_obj->connect(&#39;127.0.0.1&#39;, &#39;11211&#39;);
    $all_items = $memcache_obj->getExtendedStats(&#39;items&#39;);
    foreach ($all_items as $option => $vall) {
        if (isset($all_items[$option][&#39;items&#39;])) {
            $items = $all_items[$option][&#39;items&#39;];
            foreach ($items as $number => $item) {
                $str = $memcache_obj->getExtendedStats(&#39;cachedump&#39;, $number, 0);
                $line = $str[$option];
                if (is_array($line) && count($line) > 0) {
                    foreach ($line as $key => $value) {
                        $keys[] = $key;
                    }
                }
            }
        }
    }
    dump(count($keys)); //获取到key
    if (count($keys) > 50) { //要写入的数据条数
        $end = 50;
    } else {
        $end = count($keys);
    }
    for ($i = 0; $i <= $end; $i++) {
        if (!strstr($keys[$i], &#39;datadb&#39;)) continue;
        $ksv = str_replace(&#39;datadb&#39;, &#39;&#39;, $keys[$i]);
        /*$logdata = unserialize(S(&#39;login&#39;.$ksv));//登录写入
        if(is_array($logdata)){
        $this->addsuidinlogin($logdata[0],$logdata[1],$logdata[2],1);
        }   */
        /*$sdata = unserialize(S(&#39;regadd&#39;.$ksv));//注册写入
        if(is_array($sdata)){
        $this->baiduad($sdata[0],$sdata[1],$sdata[2],$sdata[3],$sdata[4],1);
        }
        */
        $regdata = unserialize(S(&#39;datadb&#39; . $ksv));
        $ress[] = $regdata; //开源代码phprm.com
        S(&#39;datadb&#39; . $ksv, null);
    }
    $addb = M()->db(66, C(&#39;DB_WEB_AD&#39;)); //批量写入 addall
    $addb->table(&#39;mj_ad_count&#39;)->addall($ress);
    echo M()->getLastSql();
}
Copy after login

附:

可以使用的工具如:memadmin还有memadmin文档 . 


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