PHP华为云API接口对接中的请求并发控制与资源优化技巧

<?php
// 待请求的URL列表
$urls = [
    "https://api.example.com/api1",
    "https://api.example.com/api2",
    "https://api.example.com/api3",
];

// 初始化curl
$handles = [];
$mh = curl_multi_init();

// 创建并添加curl句柄
foreach ($urls as $i => $url) {
    $handles[$i] = curl_init();
    curl_setopt($handles[$i], CURLOPT_URL, $url);
    curl_setopt($handles[$i], CURLOPT_RETURNTRANSFER, 1);
    curl_multi_add_handle($mh, $handles[$i]);
}

// 执行并发请求
$running = null;
do {
    curl_multi_exec($mh, $running);
} while ($running > 0);

// 获取请求结果
$results = [];
foreach ($handles as $i => $handle) {
    $results[$i] = curl_multi_getcontent($handle);
    curl_multi_remove_handle($mh, $handle);
    curl_close($handle);
}

// 关闭curl
curl_multi_close($mh);

// 处理并输出结果
foreach ($results as $i => $result) {
    echo "Request URL: " . $urls[$i] . ", Result: " . $result . "
";
}
?>

<?php
// 允许的请求次数和时间间隔
$maxRequests = 10; // 每秒允许的最大请求数量
$maxTime = 1; // 时间间隔（秒）

// 当前请求次数
$requestCount = 0;

// 请求开始时间
$requestStartTime = microtime(true);

// 模拟发送10次请求
for ($i = 1; $i <= 10; $i++) {
    usleep(100000); // 模拟请求的耗时

    // 计算请求间隔时间
    $requestEndTime = microtime(true);
    $requestInterval = $requestEndTime - $requestStartTime;

    // 如果请求次数超过限制或时间间隔超过限制，则等待剩余时间
    if ($requestCount >= $maxRequests || $requestInterval >= $maxTime) {
        $sleepTime = max(($maxTime - $requestInterval) * 1000000, 0); // 将剩余时间转换成微秒数
        usleep($sleepTime);
        $requestCount = 0;
        $requestStartTime = microtime(true);
    }

    // 发送API请求
    echo "Send request " . $i . "
";

    $requestCount++;
}

?>

<?php
// 获取Redis连接
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

// 定义需要缓存的API请求URL
$apiUrl = "https://api.example.com/api1";

// 检查Redis缓存是否存在
if ($redis->exists($apiUrl)) {
    // 获取缓存数据
    $apiData = $redis->get($apiUrl);
    echo "Get data from cache: " . $apiData . "
";
} else {
    // 发送API请求
    $apiData = file_get_contents($apiUrl);

    // 将API请求结果存入Redis缓存，并设置过期时间
    $redis->set($apiUrl, $apiData);
    $redis->expire($apiUrl, 60); // 设置缓存过期时间为60秒

    echo "Get data from API: " . $apiData . "
";
}

// 关闭Redis连接
$redis->close();
?>

<?php
// 定义批量处理的数据
$data = [
    ["name" => "Tom", "age" => 18],
    ["name" => "Jerry", "age" => 20],
    ["name" => "Alice", "age" => 22],
];

// 将数据转换成JSON格式
$jsonData = json_encode($data);

// 发送API请求
$apiUrl = "https://api.example.com/api1";
$apiData = file_get_contents($apiUrl, false, stream_context_create([
    'http' => [
        'method' => 'POST',
        'header' => 'Content-type: application/json',
        'content' => $jsonData
    ]
]));

// 处理API请求结果
$result = json_decode($apiData, true);
foreach ($result as $item) {
    echo "Name: " . $item["name"] . ", Age: " . $item["age"] . "
";
}
?>