What experience do you have with messaging systems and queue brokers?

In my practice, I have worked with message brokers such as RabbitMQ and Apache Kafka. I used them to organize asynchronous data exchange between microservices and for event processing.

For example, with RabbitMQ in Java, you can send a message like this:

ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
try (Connection connection = factory.newConnection();
     Channel channel = connection.createChannel()) {
    channel.queueDeclare("task_queue", true, false, false, null);
    String message = "Hello World!";
    channel.basicPublish("", "task_queue",
                         MessageProperties.PERSISTENT_TEXT_PLAIN,
                         message.getBytes("UTF-8"));
    System.out.println(" [x] Sent '" + message + "'");
}

This approach helps unload the main services and increase the system's scalability.