Registry Pattern

Kind: pattern

Layer: Extensibility Core

Record: architecture:registry-pattern

Severity: contextual

Scope: runtime, module, plugin

Canonical: Ontology

A design pattern that replaces a conditional over kinds with a keyed table that each kind registers itself into.

Listed in Architecture principles, after Service Registry and before Service Locator Pattern.

Requires

• Keyed Registration

Reinforces

• Discovery
• Factory Pattern

Enables

• Dynamic Lookup

Conflicts with

• Direct Reference

In tension with

• Global State

Tensions

• Registry Pattern / Global State

Violated by

• Ungoverned Global Registry

Refactored by

• Narrow Type

Severity

• contextual

Category

• Plugin / Extensibility / IoC

Enforced by

• rules/eslint/closure-register-needs-consumer.eslint.rule.ts
• rules/eslint/closure-registry-consumer-naming.eslint.rule.ts
• rules/eslint/require-pool-registration.eslint.rule.ts
• rules/eslint/require-self-registration.eslint.rule.ts

Refactors

• Runtime Discovery
• Event Bus
• Model Governance
• Plugin Architecture

Linked from

• When rules collide
• A check matches a shape
• The filesystem is the architecture
• Definitions own what, code owns how
• The honest gaps
• Runtime Discovery / Dynamic Binding
• Event / Messaging / Asynchronous Architecture
• Model Architecture
• Creational Patterns
• Plugin / Extensibility / IoC
• Core Vocabulary
• Plugin / Extensibility / IoC
• Schema / Canonical Data / Semantics
• Severity levels
• The resolutions

in this codebase

• registerPage
• presentation/records
• presentation/records/records.barrel.ts
• createRegistry