Redisロック同時発生防止

'127.0.0.1',
        'port'=>'6379',
        'timeout'=>'0',
        'auth'=>'',
        'reserved'=>null,
        'retry_interval'=>100,
    ];
    public function __construct($config = []){
        $this->config = !empty($config)?array_merge($this->config,$config):$this->config;
        $this->redis = $this->connect($this->config);
    }
    public function lock($name,$expire=5){
        $is_lock = $this->redis->setnx($name,time()+$expire);//        ，         ，  1，        0
        if(!empty($is_lock)){
            $lock_time = $this->redis->get($name);
            if(time()>$lock_time){
                $this->unlock($name);
                $is_lock = $this->redis->setnx($name,time()+$expire);
            }
        }
        return $is_lock?true:false;
    }
    public function unlock($name){
        return $this->redis->del($name);
    }
    private function connect($config){
        try{
            $redis = new Redis();
            $redis->connect($config['host'],$config['port'],$config['timeout'],$config['reserved'],$config['retry_interval']);
            if(!empty($config['auth'])){
                $redis->auth($config['auth']);
            }
        }catch(RedisException $e){
            throw new Exception($e->getMessage());
            return false;
        }
        return $redis;
    }
}
$redisLock = new RedisLock();
$lock = $redisLock->lock("test",10);
if($lock){
    echo 1111;
    $redisLock->unlock("test");
}else{
    echo 222;
}
?>