What are the differences between pub-sub and other messaging patterns?

What are the differences between pub-sub and other messaging patterns?

Pub-sub is a messaging pattern where publishers send messages without knowing who will read them, while in point-to-point, messages are sent directly to a specific receiver.

Can you explain how pub-sub improves scalability?

Pub-sub allows multiple subscribers to receive messages from a single publisher, which helps distribute the load and improves scalability.

What are some use cases for pub-sub?

Common use cases include real-time data feeds, event notification systems, and chat applications where multiple users need to receive updates.

Are there any downsides to using pub-sub?

Yes, potential downsides include message delivery guarantees and the complexity of managing subscriptions.

How does pub-sub compare to message queues?

Unlike message queues, which ensure that each message is processed by one consumer, pub-sub allows multiple consumers to receive the same message.