Telemetry

Generated applications include structured logging, metrics, traces, and HTTP instrumentation through OpenTelemetry.

Logs

Application and request logs use log/slog. Include request context when available so trace metadata can be attached.

Metrics and traces

Set OTLP endpoints to export telemetry:

OTLP_METRICS_ENDPOINT=https://collector.example.com
OTLP_TRACES_ENDPOINT=https://collector.example.com
OTLP_HEADERS=Authorization=Bearer token

Control trace volume with TRACE_SAMPLE_RATE.

Application spans

Create spans around meaningful application operations, not every helper call. Record stable route templates and status codes rather than high-cardinality raw values.

Sensitive data

Do not place passwords, tokens, email bodies, or unbounded user input in logs, metric attributes, or span attributes.