如何調優PHP開發中的網路通訊效能

<?php

$handler = new GuzzleHttpHandlerCurlMultiHandler();
$handler->setHandle($curlHandle);

$client = new GuzzleHttpClient([
    'handler' => $handler,
    'http_version' => '2.0',
]);

$response = $client->request('GET', 'https://example.com');
$body = $response->getBody()->getContents();

echo $body;
?>

<?php

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://example.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Connection: keep-alive']);
$body = curl_exec($ch);
curl_close($ch);

echo $body;
?>

<?php

$memcached = new Memcached();
$memcached->addServer('127.0.0.1', 11211);

$data = $memcached->get('key');
if ($data === false) {
    $data = fetchDataFromDatabase();
    $memcached->set('key', $data, 3600); // 设置缓存有效期为1小时
}

echo $data;
?>

<?php

$data = fetchDataFromDatabase();

ob_start("ob_gzhandler"); // 启用gzip压缩
echo $data;
ob_end_flush();
?>