Monitoring Guide
Uptime Monitoring Best Practices for Reliable Alerts
Updated 2/26/2026 • 7 min read
Evergreen uptime monitoring best practices for accurate alerts, clear SLO tracking, and better operational decisions.
Define Availability Targets First
Monitoring quality depends on clear targets. Decide your expected availability and recovery times before tuning thresholds.
Without explicit objectives, alerts become arbitrary and difficult to prioritize during active incidents.
Track User-Visible Latency and Errors
Availability alone is not enough. A service can be technically up while users experience degraded performance or broken flows.
Pair uptime checks with user-centric metrics like LCP, INP, and error rate to see when performance incidents need action.
- Measure endpoint reachability and status codes.
- Collect key latency percentiles over time.
- Ingest frontend Web Vitals to capture real user impact.
Make Alert Rules Observable
Alert rules should be transparent and auditable. Teams need to know why an alert fired and which threshold was crossed.
Log alert inputs and thresholds so post-incident reviews can improve policy instead of guessing what happened.
Frequently Asked Questions
What uptime check interval should small teams use?
Most teams can start with 60-second checks and tighten to 30 seconds for critical endpoints once noise is under control.
How do Web Vitals support uptime monitoring?
Web Vitals show user-perceived performance. They help detect incidents where endpoints are reachable but the experience is still poor.
What is the most common uptime monitoring mistake?
Treating all alerts as equal severity. Classify incidents by user impact so responders focus on the issues that matter most.