What are the differences between publish-subscribe and request-response communication models?

What are the differences between publish-subscribe and request-response communication models?

The publish-subscribe model allows messages to be sent to multiple subscribers without the sender needing to know who they are. In contrast, request-response is a direct communication where a client requests information from a server and waits for a response.

Can you give me an example of each model?

Sure! In a publish-subscribe model, think of a news service where subscribers receive updates without asking for them. In request-response, consider a web browser requesting a webpage from a server.

What are the advantages of using publish-subscribe?

Publish-subscribe allows for greater scalability and decouples the sender from the receivers, making it easier to add or remove subscribers.

Are there any disadvantages to using publish-subscribe?

Yes, it can introduce complexity in managing subscriptions and ensuring message delivery, especially in large systems.