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Serving, Observability, Cost, and Operations

Module Readiness: Learner-ready

The complete concept, practice, assessment, transfer, and source-routing path is available.

Selective Reading Rule​

The guide is the primary teacher. Full-book reading is not required; use the module reading guide and linked primary sources only to resolve a named question or deepen a decision.

Competency​

Operate model and retrieval services using versioning, release gates, telemetry, SLOs, caching, fallback, rollback, and unit economics.

Required Evidence​

  • deployment record
  • traces and metrics
  • cost model
  • failure drill
  • rollback proof

Completion Gate​

Explain the underlying mechanism, reproduce the result from a clean environment, evaluate at least one rejected alternative, and defend the important failure modes without relying on generated prose.

Source Policy​

Use official specifications, primary research, and curated local book routes selectively. The completed guide must remain the primary teacher.