A pipeline retry budget exhausts on a stuck message and the worker drops it silently
A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- medium
Interview Prompt
A pipeline retry budget exhausts on a stuck message and the worker drops it silently. The alternatives are worse: crash the worker, or write to stdout. The section's pattern is the dead letter queue: a separate durable destination where messages route after retries exhaust, with an envelope rich enough to recover from (original payload, failure timestamp, exception type, attempt count, correlation ID). Place the DLQ by adding one downstream of the worker and naming the envelope fields the pipeline writes.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision