Laravel 实现redis分布式锁

public function index()
    {
        $block = Cache::lock("GoodLock",10); //返回一个redis对象
        if ($block->get()){
            // Todo 业务逻辑
            dd($block);
            echo "业务逻辑";
            $block->release(); // 释放锁
            return "秒杀成功";
        }
        return 12;
    }