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Integrating Apache Kafka into Node.js Project

Integrating Apache Kafka into a Node.js project allows you to build real-time applications that leverage Kafka's data processing capabilities. Here's a basic guide on how to integrate Apache Kafka into a Node.js project:

Step 1: Install Kafka Library for Node.js

Open a terminal in your Node.js project directory.

Run the following command to install the kafkajs library, a Node.js library for Apache Kafka: npm install kafkajs.

Step 2: Write Code to Interact with Kafka in Node.js

Import the kafkajs library into your Node.js code:

const { Kafka } = require('kafkajs');

Define configuration parameters for the Kafka Broker:

const kafka = new Kafka({
  clientId: 'your-client-id',
  brokers: ['broker1:port1', 'broker2:port2'], // Replace with actual addresses and ports
});

Create a producer to send messages:

const producer = kafka.producer();

const sendMessage = async () => {
  await producer.connect();
  await producer.send({
    topic: 'your-topic',
    messages: [{ value: 'Hello Kafka!' }],
  });
  await producer.disconnect();
};

sendMessage();

Create a consumer to receive messages:

const consumer = kafka.consumer({ groupId: 'your-group-id' });

const consumeMessages = async () => {
  await consumer.connect();
  await consumer.subscribe({ topic: 'your-topic', fromBeginning: true });

  await consumer.run({
    eachMessage: async ({ topic, partition, message }) => {
      console.log(`Received message: ${message.value}`);
    },
  });
};

consumeMessages();

 

Note: Replace values like 'your-client-id', 'broker1:port1', 'your-topic', and 'your-group-id' with your actual project information.

Keep in mind that integrating Apache Kafka into Node.js can be more complex based on your specific requirements. Make sure to refer to the official documentation of Apache Kafka and the kafkajs library to understand more about configuration options and functionalities.