How would you measure observability coverage across services? [Advanced]
Answer
I measure observability coverage by checking whether every production service has owned metrics, logs, traces, dashboards, alerts, SLOs, runbooks, and correlation metadata. Coverage should be measured against operational outcomes, not just whether an agent is installed.
Technical explanation
Required attributes include service name, owner/team, environment, version, cluster, and runbook links.
Coverage should include signal quality: useful labels, structured logs, trace propagation, and actionable alerts.
Review coverage as part of production readiness and monthly operational reviews.
Hands-on example
Hands-on scorecard: for each service, mark RED metrics present, p95/p99 latency available, structured logs with trace_id, traces across dependencies, SLO defined, burn-rate alert configured, dashboard link, runbook link, and owner label. Track percent complete by team.
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More Observability interview questions
- What is observability, and how is it different from traditional monitoring? [Basic]
- What are the three pillars of observability (metrics, logs, traces)? [Basic]
- What is the difference between monitoring and observability in practice? [Basic]
- What are the four golden signals of monitoring? [Basic]
- What is the difference between the USE method and the RED method? [Basic]
- When would you use the USE method versus the RED method? [Basic]
- What is an SLI, an SLO, and an SLA, and how do they relate? [Basic]
- How do you choose good SLIs for a service? [Basic]