Registry Pattern / Global State
Kind: tension
Record: tension:global-state-registry-pattern
Canonical: Schema
"registry-pattern" (extensibility-core layer) is traded against "Global State" (extensibility-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Global State" and choosing an explicit operating point.
Listed in Tensions, after Service Registry / Registry Availability and before Service Locator Pattern / Testability.