Kas teil on kogemusi RabbitMQ sõnumivahetussüsteemiga?

Jah, mul on kogemusi RabbitMQ-ga töötamisel. See on sõnumite vahendaja, mis võimaldab rakendustel asünkroonselt andmeid vahetada järjekordade kaudu. Node.js-is kasutatakse sageli raamatukogu amqplib RabbitMQ-ga töötamiseks.

Näide lihtsast saatjast ja vastuvõtjast:

const amqp = require('amqplib');

async function sendMessage() {
  const connection = await amqp.connect('amqp://localhost');
  const channel = await connection.createChannel();
  const queue = 'task_queue';
  const msg = 'Hello RabbitMQ!';

  await channel.assertQueue(queue, { durable: true });
  channel.sendToQueue(queue, Buffer.from(msg), { persistent: true });
  console.log(" [x] Sent '%s'", msg);

  setTimeout(() => {
    connection.close();
    process.exit(0);
  }, 500);
}

async function receiveMessage() {
  const connection = await amqp.connect('amqp://localhost');
  const channel = await connection.createChannel();
  const queue = 'task_queue';

  await channel.assertQueue(queue, { durable: true });
  channel.prefetch(1);
  console.log(" [*] Waiting for messages in %s. To exit press CTRL+C", queue);

  channel.consume(queue, (msg) => {
    if (msg !== null) {
      console.log(" [x] Received %s", msg.content.toString());
      channel.ack(msg);
    }
  });
}

// Saatmiseks kutsuge välja sendMessage(), vastuvõtmiseks - receiveMessage()