Learning path · English
Operate messaging reliably
Diagnose failures, handle retries, and keep your customers’ preferences at the centre.
The delivery incident
The morning delivery report has changed. Resolve a bounce, prevent duplicate processing, and restore a reliable notification workflow.
Work at your own pace. Progress saves to your Bird account. The final challenge uses a different order and pauses hints while your work is assessed.
- 01Diagnose the bounce
- 02Handle a retry
- 03Verify the sender
- 04Resolve event ordering
- 05Respect a preference
- 06Independent challenge