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How would you implement custom alarms for data delays or job failures?

General/Othermedium0.6 min readPremium
Frequency
Low
Asked at 1 company
Category
243
questions in General/Other
Difficulty Split
151E|43M|49H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Capco
Key Concepts Tested
airflowpartition
Expert AnswerPremium
123 wordsInterview-ready
Implementing custom alarms requires an architectural view of observability layers. WHY: Silent failures erode trust; SLA breaches have regulatory and revenue impact. Design a multi-tier stack: (1) COLLECTION—instrument jobs with completion timestamps, data freshness (max(event_ts) per partition), failure counts via CloudWatch/Datadog/Prometheus; (2) THRESHOLD ENGINE—define SLAs (e.g., daily batch by 6 AM) and trigger PagerDuty/SNS; (3) DEPENDENCY CHECKS—upstream sensors block downstream runs....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Capco. The answer also includes follow-up discussion points that interviewers commonly explore.

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