Can you share your experience using Apache Kafka in projects?

In projects with Node.js, I used Apache Kafka to organize reliable and scalable message transfer between microservices. The main scenarios included:

• Asynchronous event processing, such as logging or order processing.
• Integration with external systems through producers and consumers.
• Ensuring fault tolerance by storing messages in topics.

To work with Kafka in Node.js, I usually use libraries like kafkajs or node-rdkafka. Here's an example of a simple producer with kafkajs:

const { Kafka } = require('kafkajs')

const kafka = new Kafka({ clientId: 'my-app', brokers: ['kafka1:9092'] })
const producer = kafka.producer()

async function sendMessage() {
  await producer.connect()
  await producer.send({
    topic: 'test-topic',
    messages: [ { value: 'Hello Kafka' } ],
  })
  await producer.disconnect()
}

sendMessage().catch(console.error)

Experience has shown that it is important to properly configure error handling and session management to avoid message loss and ensure high availability.