All terms
Glossary
Observability
Being able to understand a system's internal state from its logs, metrics, and traces.
Observability is the ability to understand what a running system is doing - and why - from its outputs: structured logs, metrics, traces, and health checks. It is how teams detect, diagnose, and fix issues before users feel them.
Instrumenting observability during the build (not after an incident) turns 'something is wrong' into 'here is exactly what is wrong,' which is the difference between a five-minute fix and a five-hour outage.
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