Layer Spine Precedence

Kind: mechanism

Layer: Structural Core

Record: architecture:layer-spine-precedence

Severity: contextual

Scope: file

Canonical: Ontology

A mechanism that breaks an irreducible tie between two roles in favor of the one nearer the domain on the layer spine.

Listed in Architecture principles, after Narrowest Concern and before Agnostic-First Vocabulary.

Requires

• Layer Spine

Reinforces

• Narrowest Concern

Enables

• Placement Predictability

Conflicts with

• Multi-Role File

Violated by

• Spine Read as a Dependency Rule

Refactored by

• Apply the Domain-Ward Tie-Break

Severity

• contextual

Category

• Taxonomy / Classification / Naming

Linked from

• The layer spine
• Taxonomy / Classification / Naming
• Taxonomy / Classification / Naming
• Severity levels