Logging tracer: records spans to the log (start, end + duration, events, exceptions). Useful for local development and for seeing the trace shape without standing up an OpenTelemetry collector. Not a sampled/exportable tracer — for real distributed tracing use the OTLP adapter.
A span carries a generated trace-id/span-id, a start timestamp, and an atom
of accumulated attributes so set-attributes! calls made mid-span are folded
in and appear on the final span.end line (matching how a real backend
mutates its span object).
Logging tracer: records spans to the log (start, end + duration, events, exceptions). Useful for local development and for seeing the trace shape without standing up an OpenTelemetry collector. Not a sampled/exportable tracer — for real distributed tracing use the OTLP adapter. A span carries a generated trace-id/span-id, a start timestamp, and an atom of accumulated attributes so `set-attributes!` calls made mid-span are folded in and appear on the final `span.end` line (matching how a real backend mutates its span object).
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