php中memcache读取数据批量写入mysql
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('127.0.0.1', '11211'); $all_items = $memcache_obj->getExtendedStats('items'); foreach ($all_items as $option => $vall) { if (isset($all_items[$option]['items'])) { $items = $all_items[$option]['items']; foreach ($items as $number => $item) { $str = $memcache_obj->getExtendedStats('cachedump', $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], 'datadb')) continue; $ksv = str_replace('datadb', '', $keys[$i]); /*$logdata = unserialize(S('login'.$ksv));//登录写入 if(is_array($logdata)){ $this->addsuidinlogin($logdata[0],$logdata[1],$logdata[2],1); } */ /*$sdata = unserialize(S('regadd'.$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('datadb' . $ksv)); $ress[] = $regdata; //开源代码phprm.com S('datadb' . $ksv, null); } $addb = M()->db(66, C('DB_WEB_AD')); //批量写入 addall $addb->table('mj_ad_count')->addall($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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