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Track Errors First
Observability starts with errors, not dashboards. A case for tracking exceptions first — and not losing them in logs and metrics.
The full stacktrace — readable, with line numbers and source references Local variables — so you know what was actually passed in Request data — like URL paths, headers, or session info User context — who was affected, what were they doing? If the system treats that like just another row in a data pipeline, you’ll likely get the minimum: a message string, maybe a timestamp, maybe a partial trace. Stack traces, local variables, request metadata, user context — details that rarely make it into standard logs or metric counters.
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