How do you build alerts in Wavefront, and what is a smart alert? [Advanced]
Answer
Wavefront alerts are built from queries and conditions evaluated over time. A smart alert uses dynamic behavior or noise reduction features to capture real anomalies and reduce false positives compared with simple static thresholds.
Technical explanation
Basic alerts compare a query result to a fixed threshold for a duration.
More advanced alerts use baselines, anomaly detection, missing data handling, composite conditions, or linked alerts.
Like any alerting system, severity and routing should map to required human action.
Hands-on example
Example: create an alert on p95 checkout latency for env=prod. Static condition: p95 > 750 ms for 10 minutes. Smart condition: current latency deviates significantly from normal same-time-of-day baseline and error rate also increases, reducing false pages during normal traffic peaks.
Check how well your resume matches the role with our free resume checker— match score, ATS check, and the skills you're missing.
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]