What are the differences between publish-subscribe and message queue systems?

What are the differences between publish-subscribe and message queue systems?

Publish-subscribe systems allow multiple subscribers to receive messages from a publisher, while message queues send messages to a single consumer.

Can you explain how each system handles message delivery?

In publish-subscribe, messages are delivered to all subscribers, while in message queues, messages are typically delivered to one consumer at a time.

Which system is better for real-time applications?

Publish-subscribe is often better for real-time applications as it allows for immediate message distribution to multiple subscribers.

Are there any scenarios where message queues are preferred?

Yes, message queues are preferred in scenarios requiring guaranteed delivery and processing of messages in a specific order.