Structured logging

Logs written as key-value fields instead of free text can be filtered and aggregated. Include a request ID in every line so one request can be followed across services.

Where it shows up in real systems

  • Centralised logs

    Indispensable to understand an incident after the fact. Volume grows fast, so set retention and log levels deliberately.

    In production: Elasticsearch + Kibana, Grafana Loki, Datadog Logs, Splunk

See it break, then fix it

Build an architecture, send it a day of traffic and outages, and learn why it holds or fails. Free to start.

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