PHP+Redis/Memcache(过期机制)实现高效限制一段时间内操作次数限制逻辑

$redis = new Redis();
$redis_conn = $redis->connect('127.0.0.1',6379);	

if($redis_conn){
    $result = json_decode($redis->get('test'), true); 
    $result = is_array($result)?$result:array();
    
    if(count($result)<5 || ($last = array_shift($result) < time()-10*60)){
        array_push($result, time());
        $redis->setex("test", 10*60, json_encode($result));
        //echo $redis->ttl("test");
        echo &#39;投票逻辑&#39;;
    
    }else{
        echo &#39;10分钟内投票次数已达到最大5，稍后再试！&#39;;
    }
}else{
    echo &#39;Redis is gone！&#39;;
}