workerman实现在线聊天的性能优化与可扩展性提升

use WorkermanWorker;
use WorkermanLibTimer;

// 创建一个Worker监听8080端口，使用异步非阻塞IO
$ws_worker = new Worker("websocket://0.0.0.0:8080");

// 设置进程数为4，这里可以根据实际情况调整
$ws_worker->count = 4;

// 客户端连接时的回调函数
$ws_worker->onConnect = function($connection)
{
    echo "New connection
";
};

// 接收到客户端消息时的回调函数
$ws_worker->onMessage = function($connection, $data)
{
    // 处理消息的逻辑
};

// 客户端连接断开时的回调函数
$ws_worker->onClose = function($connection)
{
    echo "Connection closed
";
};

// 启动Worker
Worker::runAll();

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

// 获取缓存数据
$data = $redis->get('key');

if(empty($data)){
    // 数据不存在，从数据库中读取
    $data = $db->query('SELECT * FROM table');
    
    // 将数据存入缓存
    $redis->set('key', $data);
}

// 创建5个Worker进程，每个进程都能够处理一部分用户连接和消息发送
for($i=0; $i<5; $i++){
    $ws_worker = new Worker('websocket://0.0.0.0:8080');
    $ws_worker->count = 1;
    $ws_worker->onConnect = function($connection){
        echo "New connection
";
    };

    $ws_worker->onMessage = function($connection, $data){
        // 处理消息的逻辑
    };

    $ws_worker->onClose = function($connection){
        echo "Connection closed
";
    };

    // 运行进程
    $ws_worker->runAll();
}