优化PHP SSO单点登录的性能和可扩展性的实用技巧

function check_login($username, $password) {
    $redis = new Redis();
    $redis->connect('127.0.0.1', 6379);

    $user_data = $redis->get($username);

    if (!$user_data) {
        // 从数据库中查询用户信息
        $user_data = get_user_data($username);

        // 存储用户信息到缓存
        $redis->set($username, $user_data, 3600); // 设置缓存有效期为1小时
    }

    $user_data = json_decode($user_data, true);

    // 验证用户密码等操作
    // ...

    return true;
}

function handle_login_request($username, $password) {
    // 将登录请求加入消息队列
    $rabbitmq = new AMQPConnection();
    $rabbitmq->setHost('localhost');
    $rabbitmq->connect();

    $channel = new AMQPChannel($rabbitmq);
    $exchange = new AMQPExchange($channel);
    $exchange->setName('login_queue');
    $exchange->setType(AMQP_EX_TYPE_DIRECT);
    $exchange->declare();

    $message = json_encode(array('username' => $username, 'password' => $password));
    $exchange->publish($message, 'login');

    // 异步处理登录请求
    // ...
}

function process_login_request() {
    $rabbitmq = new AMQPConnection();
    $rabbitmq->setHost('localhost');
    $rabbitmq->connect();

    $channel = new AMQPChannel($rabbitmq);
    $queue = new AMQPQueue($channel);
    $queue->setName('login_queue');
    $queue->declare();
    $queue->bind('login_queue', 'login');

    while (true) {
        $message = $queue->get();

        // 处理登录请求
        // ...

        $queue->ack($message->getDeliveryTag());
    }
}

function set_user_session($token, $user_info) {
    $redis = new RedisCluster(null, array('127.0.0.1:7000', '127.0.0.1:7001'));

    $redis->set($token, json_encode($user_info));
    $redis->expire($token, 3600); // 设置会话有效期为1小时
}

function get_user_session($token) {
    $redis = new RedisCluster(null, array('127.0.0.1:7000', '127.0.0.1:7001'));

    $user_info = $redis->get($token);

    if ($user_info) {
        $user_info = json_decode($user_info, true);
    }

    return $user_info;
}