observability

Structured Logger

JSON log lines with consistent fields — machine-parseable, filterable, correlatable.

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How It Works

  • Each line is a structured JSON object
  • Standard fields: timestamp, level, service, trace_id
  • Machine-parseable for aggregation (ELK, Loki)
  • Filter by level, service, or trace ID

Use Cases

  • Centralized logging (ELK, Datadog, Loki)
  • Debugging across microservices
  • Audit trails and compliance
  • Correlation via trace IDs