What are the differences between pub-sub and messaging systems?

What are the differences between pub-sub and messaging systems?

Pub-sub systems allow publishers to send messages to multiple subscribers without direct connections, while messaging systems often involve point-to-point communication.

Can you give me an example of each?

Sure! An example of a pub-sub system is Google Cloud Pub/Sub, where messages are sent to all subscribers. An example of a messaging system is RabbitMQ, which routes messages between specific sender and receiver.

Which one is better for real-time applications?

It depends on the use case. Pub-sub is often better for broadcasting messages to many users, while messaging systems are better for direct communication and ensuring message delivery.

What are the scalability implications of each?

Pub-sub systems generally scale better for large numbers of subscribers, while messaging systems can face bottlenecks if not designed for high throughput.