Home PHP Framework Swoole Swoole implements high-performance social functions

Swoole implements high-performance social functions

Jun 13, 2023 pm 04:04 PM
high performance social function swoole

With the rapid development of social media, more and more companies and individuals need to implement social functions in their websites or applications to better interact and communicate with users. In order to achieve high concurrency and low latency social functions, developers need to choose some high-performance tools and frameworks. Among them, Swoole is a very good choice.

Swoole is an asynchronous, high-performance network communication framework based on PHP. It is designed to improve the performance of web applications, especially when handling high concurrent requests. Swoole can be seamlessly integrated with the conventional language elements of PHP. It also provides APIs for directly operating underlying coroutines, TCP, UDP, Unix sockets, HTTP, WebSocket and other network protocols, allowing developers to more easily implement various High performance tasks.

Let’s discuss how to use Swoole to implement high-performance social functions.

  1. Implementing WebSocket service

WebSocket is a very important protocol when implementing social functions. It supports two-way, real-time data transmission, allowing the server to push messages to the client in real time, and also allowing the client to interact with the server in real time. In Swoole, we can use the swoole_websocket_server class to implement the WebSocket service.

The following is a simple example:

$server = new swoole_websocket_server("0.0.0.0", 9501);

$server->on('open', function (swoole_websocket_server $server, $request) {
    echo "WebSocket客户端{$request->fd}已连接
";
});

$server->on('message', function (swoole_websocket_server $server, $frame) {
    echo "来自客户端{$frame->fd}的消息:{$frame->data}
";
    $server->push($frame->fd, "这是来自服务器的回复");
});

$server->on('close', function ($server, $fd) {
    echo "WebSocket客户端{$fd}已关闭
";
});

$server->start();
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In this example, we create a WebSocket server and listen to port 9501, printing log information when the client connects or disconnects. When receiving a message from the client, the server prints out the message content and replies with a message.

  1. Use coroutines to perform HTTP requests and push messages

Swoole provides support for coroutines, which allows us to perform operations such as HTTP requests and asynchronous tasks more conveniently. When implementing social functions, we often need to make HTTP requests, such as obtaining the user's personal information, friend list and other information. The following is an example of using the Swoole coroutine HTTP client:

co(function () {
    $cli = new SwooleCoroutineHttpClient('www.example.com', 80);
    $cli->set(['timeout' => 1]);
    $cli->setHeaders([
        'Host' => 'www.example.com',
        'User-Agent' => 'Chrome/49.0.2587.3',
        'Accept' => 'text/html,application/xhtml+xml,application/xml',
        'Accept-Encoding' => 'gzip',
    ]);
    $cli->get('/path/to/api');

    echo $cli->body;
});
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In this example, we use the SwooleCoroutineHttpClient class to make HTTP requests. This class is a coroutine client that can implement asynchronous HTTP request operations. Before sending a request, we can set the request timeout and request header information. After executing the request, we can get the response content through $cli->body.

Next, we can use the coroutine HTTP request in the WebSocket server to request the client, obtain the user information and push it to the client. For example, when getting the user's profile, we can use the following code:

$server->on('message', function (swoole_websocket_server $server, $frame) {
    $path = '/user/profile?id=' . $frame->data;
    $cli = new SwooleCoroutineHttpClient('www.example.com', 80);
    $cli->set(['timeout' => 1]);
    $cli->setHeaders([
        'Host' => 'www.example.com',
        'User-Agent' => 'Chrome/49.0.2587.3',
        'Accept' => 'text/html,application/xhtml+xml,application/xml',
        'Accept-Encoding' => 'gzip',
    ]);
    $cli->get($path);

    $profile = json_decode($cli->body, true);

    $server->push($frame->fd, json_encode($profile));
});
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In this example, we received a message through the WebSocket server indicating that we want to get the user's profile. We use the SwooleCoroutineHttpClient class to make HTTP requests and parse the response JSON data into the array $profile. Finally, the contents of $profile are pushed to the client through WebSocket.

  1. Use Swoole Redis client for caching

Caching is a very common requirement when implementing social functions. In order to improve the efficiency of reading data, we often need to use caching tools such as Redis to cache data. In Swoole, you can use the Swoole Redis client to quickly interact with Redis instances.

The following is an example of using the Swoole Redis client:

$redis = new SwooleCoroutineRedis();
$redis->connect('127.0.0.1', 6379);
$redis->set('key', 'value');
$value = $redis->get('key');
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In this example, we use the SwooleCoroutineRedis class to implement the functions of the Redis client, which can easily read and write data. Enter operation.

For caching application scenarios, for example, when obtaining the friend list, we can cache the data into Redis. When the user requests the friend list, the data is first read from Redis. If it does not exist in the cache, then Read data from the database and cache it in Redis. This can greatly reduce the burden on the database and improve the efficiency of reading data.

  1. Realizing broadcast and private chat functions

In social applications, broadcast and private chat functions are also essential. The broadcast function allows messages to be sent to all online users at once, while the private chat function enables peer-to-peer real-time communication between users. In Swoole, these two functions can be achieved through the WebSocket server.

The following is a simple implementation:

$server->on('message', function (swoole_websocket_server $server, $frame) {
    $data = json_decode($frame->data, true);
    switch ($data['command']) {
        case 'broadcast':
            $server->push('broadcast', $data['message']);
            break;
        case 'private':
            $server->push($data['id'], $data['message']);
            break;
    }
});
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In this example, we perform broadcast or private chat operations by judging the type of message received. If the received message type is broadcast, the message will be pushed to all online users; if the received message type is private, the message will be pushed to the specified user.

In the WebSocket client, we also need to make some corresponding adjustments, such as joining the broadcast room to receive broadcast messages:

let ws = new WebSocket('ws://localhost:9501');
ws.onopen = function () {
    // 加入broadcast房间
    ws.send(JSON.stringify({command: 'join', room: 'broadcast'}));
};
ws.onmessage = function (event) {
    let data = JSON.parse(event.data);
    // 处理广播消息
    if (data.room === 'broadcast') {
        console.log(data.message);
    }
};
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In this example, we use the WebSocket client to join The broadcast room can receive messages broadcast by the server and output them in the console.

Summary

Through the above demonstration, we can see that Swoole provides very powerful and rich functions that can help us achieve high concurrency and low latency social functions. In practical applications, we need to select appropriate tools and solutions based on specific needs and scenarios to improve user experience and system maintainability.

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