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BACKEND-DEVELOPMENT5 MIN READ

Observability Signals Deck

Choose the observability signal that best answers a backend diagnostic question.

Metrics Which signal answers how many requests are failing over time? Metrics. Use rates, ratios, percentiles, and windows to see aggregate behavior and alert on SLO impact. Traces Which signal answers where did this one slow request spend time? Traces. Use spans to see route, database, cache, queue, and downstream timing in one request path. Logs vs traces Event context versus causal path Logs explain events; traces place them in the path. Objection Let's just log the full request body so we can debug anything. The endpoint handles personal data and tokens may appear in nested fields. Your line Let's…

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