Lesson 09 · 11 min
Logs, metrics, and alerts
Learn about a problem before your users do.
11 minLesson 9 of 9Practice includedAsk AI on any point
Observability rests on three things. Logs — events with details: what, when, with which request. Metrics — numbers over time: requests per second, error rate, response time (p95). Alerts — rules that wake a person up when a metric crosses a threshold. Add error tracking (Sentry) and an external uptime check — and you can see production.
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