Message Construction

Event Message

Publish a notification that something has happened. Consumers react independently and the producer does not prescribe a specific action.

eventnotificationpubsub
The problem
How can messaging be used to transmit events from one application to another?
Adapted from Enterprise Integration Patterns under CC BY 3.0. The visualization and explanatory content on this page are original GateSift material.
Original GateSift visualization

How Event Message works

The pattern introduces a clear integration responsibility between message production and consumption.

Producer
Event Message
Consumer
1

Receive or create the message at the integration boundary.

2

Apply Event Message to solve the recurring design problem.

3

Continue the message flow with clearer responsibilities and lower coupling.

GateSift explanation

What this pattern helps you decide

Publish a notification that something has happened. Consumers react independently and the producer does not prescribe a specific action.

What happens when processing fails or the same message is delivered twice?
Where does state, correlation or routing configuration live?
How will operators trace the message and understand the decision path?
Common Azure implementations

Where you may see it

  • Event Grid event
  • CloudEvent
  • Service Bus integration event
GateSift relevance

How the analyzers can surface it

  • Publish/subscribe routes
  • Event-oriented contracts

Pattern detection is contextual. GateSift should present these as architectural signals, not claim a pattern is implemented solely because one policy statement or adapter exists.

Source, licence and attribution

The pattern name and selected problem statement are adapted from Enterprise Integration Patterns by Gregor Hohpe and Bobby Woolf under CC BY 3.0. GateSift summaries, Azure mappings, analyzer guidance and diagrams are original. No endorsement by the original authors is implied.

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