$config = array(    'host' => '127.0.0.1',    'user' => 'root',    'password' => 'root',    'database' => 'test',);$pool = new Swoole\Async\MySQL($config, 100);for($i = 0; $i < 10000; $i++){    $pool->query("show tables", function($mysqli, mysqli_result $result){        var_dump($result->fetch_all());    });}