Field notes / Patterns

Step 2 of 3 in the pattern system

Pattern - draft

RAG retrieval maturity pattern

Three passes from corpus to production posture — each stage answers a different question.

A practical model for discussing retrieval systems without mixing exploratory work with production commitments.

Quick model

Staged maturity — not a single score.

Intent

Name the lane you are in—foundation, workflow composition, or production posture.

That keeps “RAG quality” from collapsing three different problems into one debate.

Forces

Weak pass 1 makes pass 2 tuning hide failures, not fix them.

Schedule pressure pulls teams to models and rerankers unless the thread stays staged.

Structure

Lock artifacts and owners per pass before widening scope.

Usage

Use in architecture reviews and roadmaps when “better retrieval” is mistaken for “production ready.”

Not a substitute for domain benchmarks—you still define those.

Related

Three passes

This pattern expresses itself across three passes:

System model

How foundation, composition, and posture connect.

flowchart LR
    pass1[RetrievalFoundation] --> pass2[WorkflowComposition]
    pass2 --> pass3[ProductionPosture]
    pass1 --> evidence[EvidenceQuality]
    pass2 --> orchestration[BoundaryDiscipline]
    pass3 --> operations[ObservabilityAndControls]
            
If pass 1 is unstable, pass 2 complexity usually hides failures instead of solving them.

Application checklist

Then explore

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