Publisher-Subscriber

Enable an application to announce events to multiple interested consumers asynchronously, without coupling the senders to the receivers : Publisher-Subscriber pattern - Azure Architecture Center

  1. Context and problem

    Avoid the sender to wait for a response and avoid the consumer to know the identity of the producer.

  2. Solution

    Pus/Sub Messaging Pattern

  3. Challenges

 

The channels in a publish-subscribe system are treated as unidirectional. If a specific subscriber needs to send acknowledgment or communicate status back to the publisher, consider using the Request/Reply Pattern. This pattern uses one channel to send a message to the subscriber, and a separate reply channel for communicating back to the publisher.