Plan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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Structured logging: slog/pino, Cloud Logging, Loki, correlation IDs, PII scrubbing, sampling, cost control.
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实测评分 未实测
查看安装方法安装前可以查看交给 AI 代理的指令内容。
Objetivo: debuggable en prod, barato a escala, sin PII.
| Destino | Cuándo |
|---|---|
| GCP Cloud Logging | Default Educabot (runtime GCP), $0.50/GiB ingest |
| Grafana Loki | Self-host, alto volumen barato |
| Datadog Logs | Si ya pagan DD APM |
| ELK/OpenSearch | Compliance/SIEM full-text |
Default: Cloud Logging (runtime) + Loki (alto volumen/cheap retention).
Go (slog stdlib 1.21+): slog.NewJSONHandler con level configurable, ReplaceAttr para PII scrubbing, base fields (service, env, version). Middleware Gin inyecta request-scoped attrs (request_id, trace_id, route) en context.
Node/TS (pino): level via env, base fields, redact.paths para PII (password, token, authorization, cookie, dni, cuit), pinoHttp middleware con custom props (trace_id) y serializers compactos. Pino > winston: 5x más rápido, JSON nativo.
Cloud Logging fields: severity (DEBUG-CRITICAL), logging.googleapis.com/trace (auto-link a Cloud Trace), httpRequest (método/status/latency como columnas). Cloud Run/GKE: stdout se loguea automáticamente.
React/frontend: errores → Sentry, analytics → Mixpanel/Amplitude. Si necesitás logs centralizados: buffer + batch + flush a /api/logs, solo warn+ en prod. Evitar loguear interacciones rutinarias.
React Native: errores → Sentry, analytics → Mixpanel. Debug en campo: react-native-logs (archivos rotados), upload con consent. Nunca PII en logs del device.
OTel W3C Trace Context (traceparent). Todo log en un request con mismo trace_id. Go: trace.SpanFromContext(ctx).SpanContext().TraceID().
| Level | Uso |
|---|---|
| DEBUG | Flujo interno. Off en prod salvo troubleshooting |
| INFO | Eventos normales. Default prod |
| WARN | Recuperable ("retry 2/3"). Mirar tendencias |
| ERROR | Falla operación, sistema sigue. → Sentry también |
| FATAL | Se muere el servicio. Raro. Page on-call |
Si nadie va a hacer algo con la línea → bájala de level o sacala.
Cloud Logging ~$0.50/GiB. Estrategia: siempre errores 100%, samplear éxitos (5-10%). Con OTel tracing, bajar INFO a 1-5%.
→ Read references/pii-audit-access.md for PII scrubbing fields, audit log schema, access log fields, and retention/cost tables
→ Read references/anti-patterns.md for common logging anti-patterns
→ Read references/checklist.md for the 12-item implementation checklist
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Plan, design, and implement A/B tests and experiments with statistical rigor. Covers hypothesis frameworks, sample sizing, metrics, and result analysis.
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