What is message delivery in publish-subscribe systems?

What is message delivery in publish-subscribe systems?

Message delivery in publish-subscribe systems refers to how messages are sent from publishers to subscribers. It ensures that subscribers receive messages based on their interests.

How does it differ from traditional messaging systems?

Unlike traditional messaging systems where messages are sent directly to specific recipients, publish-subscribe systems decouple the message producers (publishers) from the consumers (subscribers). This allows for more flexibility and scalability.

What are the common protocols used in these systems?

Common protocols include MQTT, AMQP, and STOMP. Each has its own features and use cases, catering to different needs in message delivery.

Can you explain the concept of message brokers?

Message brokers are intermediaries that facilitate communication between publishers and subscribers. They manage message routing, filtering, and delivery, ensuring that messages reach the right subscribers.

What are the advantages of using a publish-subscribe model?

The advantages include improved scalability, flexibility, and the ability to handle dynamic subscriber groups. It also allows for asynchronous communication, which can enhance system performance.