Choreography Pattern

Problem

• Adding or removing services without breaking existing logic. and, so create a centralized service which is the entry point to multiple services for incoming requests.

• Make sure that each service completes their responsability and is not aware of the overall workflow.

Open

From Microsoft Documentation

Solution

The goal is to buffer requests until downstream components claim and process them.

Open

From Microsoft Documentation

A message broker could be the solution to buffer requests from client app : messages will be queued in the message broker.

Choreography In Practice

• The design ensures the choreography to occur in a sequence.

• To avoid cascading retry operations that might lead to multiple efforts, business services should immediately flag unacceptable messages. It's possible to enrich such messages using well-known reason codes or a defined application code, so it can be moved to a dead letter queue (DLQ).