Async API Callback
In Asynchronous API callback option, the client application makes a call to API/Service and doesn’t wait for the response but registers a callback (endpoint address) to API/Service where API/Service sends the response later.
When to use
- To process long running tasks in background.
- When request processing logic is dependent on other task which cannot execute immediately.
- When external service is responsible for executing of background task and external service not respond immediately
- To process long running task.
Patterns to be considered
- If required then ProcessLongTask() method shown in the above image might implement the event based communication with related patterns.