Core Concepts · TL;DR

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Rapid overview

TL;DR

Observability rests on three pillars — metrics (cheap, aggregatable numbers good for alerts and dashboards), logs (high-cardinality records good for debugging), and traces (request flow across services). Pair them with SLOs and error budgets and you can alert on user-visible symptoms instead of internal causes, which is what kills alert fatigue and keeps on-call sustainable.

See also