observability
Installation
SKILL.md
Observability — OpenTelemetry & Distributed Tracing
Instrumentation moderne avec OpenTelemetry pour métriques, traces et logs structurés.
Piliers de l'Observabilité
| Pilier | Technologies | Métriques clés |
|---|---|---|
| Metrics | Prometheus, Grafana, Datadog | RED (Rate, Errors, Duration), USE (Utilization, Saturation, Errors) |
| Traces | OpenTelemetry, Jaeger, Tempo | P95 latency, span duration, error rate |
| Logs | Loki, ElasticSearch, Datadog | Structured JSON, correlation IDs |
OpenTelemetry (OTel) Stack
// Node.js — Auto-instrumentation
const { NodeSDK } = require('@opentelemetry/sdk-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');