DevOps & Tooling / Knowledge library
Observability
Infers internal system state from emitted traces, metrics, logs, and events
Why learn Observability?
It supports diagnosis of failures that were not predicted in advance
The problem it solves
It explains complex runtime behavior without attaching a debugger to production
Where it came from
Observability is a software testing technique that infers internal system state from emitted traces, metrics, logs, and events. Its guarantees and tradeoffs depend on the concrete implementation and operating context.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Define Observability and distinguish it from a neighboring concept.
- Choose a realistic task where Observability is appropriate.
- Identify a failure mode caused by misusing Observability.
- Interpret a small design or result involving Observability.
- Explain one tradeoff or limitation of Observability.
Documentation and sources
- ISTQB Glossary (glossary.istqb.org)