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Which metrics are critical to monitor?

System Design/Architectureeasy0.2 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in System Design/Architecture
Difficulty Split
15E|6M|158H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Moonfare
Interview Pro Tip

Pro-Move: SLA + business metrics combined. Red Flag: Only infra metrics, no data quality.

Expert AnswerPremium
48 wordsInterview-ready
**Pipeline:** Throughput, latency, failure rate, SLA attainment. **Infra:** CPU/memory, shuffle spill, GC. **Data quality:** Null rates, schema drift, freshness. **Cost:** Compute hours, storage. **Business:** Records processed, downstream impact. **Tools:** Grafana, Datadog; PagerDuty. **Why:** SLOs + alerts on breach. Business metrics for prioritization....
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 Moonfare. The answer also includes follow-up discussion points that interviewers commonly explore.

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