Your question is Idempotent Ingestion for Failures. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How do you handle data pipeline failures and ensure idempotency during high-volume ingestion?
Explain the design you would use for ingestion, retries, checkpointing, deduplication, and replay. Include the storage-layer approach, failure detection and recovery, data quality safeguards, and the operational metrics you would monitor. Provide a practical implementation outline using appropriate pipeline technologies and explain the trade-offs between at-least-once processing and exactly-once outcomes.
