Debugging Queue Consumer Failures
How to debug missing retries, duplicate workers, and failed jobs that vanish from queues.
Pattern
Queue ownership or acknowledgement happens at the wrong time relative to async processing.
warningSymptoms
- arrow_rightFailed jobs disappear
- arrow_rightSame job processes twice
- arrow_rightRetries stop after provider errors
searchWhere to look
- arrow_rightAck/nack ordering
- arrow_rightVisibility timeout
- arrow_rightWorker heartbeat
- arrow_rightAsync awaits around side effects
buildCommon fixes
- arrow_rightAck only after durable success
- arrow_rightNack or requeue failures
- arrow_rightExtend visibility before expiry
- arrow_rightRecord idempotent job completion
Practice challenges
No ready practice incident is mapped yet.