Perfomance & ScalingLesson 84Free preview

Node Monitoring

This lesson is part of Node.js · All levels

Summary

This lesson explains the monitoring and observability of applications through three pillars: metrics, logs, and traces. You'll understand the concept of health checks, application metrics, and distributed tracing on microservices. Tools like Prometheus and OpenTelemetry are often used with Node applications. (Node.js)

Key points

Three pillars of observability: metrics, logs, and traces.
Important metrics: request rate, error rate, latency (RED) and saturation (USE).
Prometheus + Grafana is a common pair; the exposure/metrics format is prom-client.
Distributed tracing with OpenTelemetry tracks across services via traceId/spanId.
Set healthz and readiness apart.

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