Architectural Patterns

Service callback pattern

How can a service sync up asynchronously with its consumers?:

Problem	When a service needs to respond to a consumer request for the issuance of multiple messages or when service message processing requires a large amount of time, it is often not possible to communicate synchronously.
Solution	A service can require that consumers communicate with it asynchronously and provide a callback address to which the service can send response messages.
Impacts	Asynchronous communication can introduce reliability concerns and can further require that surrounding infrastructure be upgraded to fully support the necessary callback correlation.

Problem: When service logic requires that a consumer request is ...