Publisher-Subscriber Pattern

Problem

• Use asynchronous messaging to decouple senders from consumers and avoid blocking the sender to wait for a response.

• Provide info to other components as events.

Solution

• An event as a message that notifies other components about a change or an action that has taken place.

• Workflow is based on an input channel and an output channel, one outpout channel per consumer and consumer is known as subscriber.

Open

Publisher-Subscriber In Practice

Open

Diagram shows an enterprise integration architecture that uses Service Bus to coordinate workflows, and Event Grid to notify subsystems of events that occur.