How do I implement the pub-sub pattern in my application?

How do I implement the pub-sub pattern in my application?

The pub-sub pattern involves publishers sending messages to subscribers without knowing who they are. You can implement it using message brokers like RabbitMQ or Kafka.

Can you give me a simple code example?

Sure! Here's a basic example in JavaScript using Node.js:

const EventEmitter = require('events');

class PubSub extends EventEmitter {}
const pubsub = new PubSub();

pubsub.on('event', (data) => {
    console.log(`Received data: ${data}`);
});

pubsub.emit('event', 'Hello, World!');

What are the advantages of using the pub-sub pattern?

The advantages include decoupling components, scalability, and improved maintainability of your application.

Are there any common pitfalls to avoid?

Yes, common pitfalls include overusing the pattern, leading to complexity, and not handling message delivery failures properly.