# Dynamic Dispatch

> A mechanism that chooses which operation runs from the receiver or a keyed table at runtime, replacing a conditional over kinds.

Record: `architecture:dynamic-dispatch`
Kind: mechanism
Layer: [Extensibility Core](https://banes-lab.com/records/layer/extensibility-core.md)
Severity: recommended
Scope: method, interface, runtime
Canonical: https://banes-lab.com/ontology#architecture-dynamic-dispatch

Listed in [Architecture principles](https://banes-lab.com/api/records/architecture.md), after [Dynamic Binding](https://banes-lab.com/records/architecture/dynamic-binding.md) and before [Runtime Extensibility](https://banes-lab.com/records/architecture/runtime-extensibility.md).

## Repair

- Refactored by: Introduce Polymorphic Method, Strategy
- Detected by: switch/if chains on type
- Violated by: manual dispatch over concrete type
- Measured by: conditional dispatch count
- Enforced by: lint rules, [review](https://banes-lab.com/records/lexicon/review.md)

## Requires

- [Polymorphism](https://banes-lab.com/records/architecture/polymorphism.md)

## Reinforces

- [Open/Closed Principle (OCP)](https://banes-lab.com/records/architecture/open-closed.md)

## Enables

- [Replace Conditional with Polymorphism](https://banes-lab.com/records/lexicon/replace-conditional-with-polymorphism.md)

## Conflicts with

- [Type-Switch Dispatch](https://banes-lab.com/records/lexicon/type-switch-dispatch.md)

## In tension with

- [Traceability](https://banes-lab.com/records/architecture/traceability.md)

## Tensions

- [Dynamic Dispatch / Traceability](https://banes-lab.com/records/tension/dynamic-dispatch-traceability.md)

## Severity

- [recommended](https://banes-lab.com/records/vocabulary/severity-recommended.md)

## Category

- [Runtime Discovery / Dynamic Binding](https://banes-lab.com/records/architecture-category/runtime-discovery-dynamic-binding.md)

## Linked from

- [SOLID / Object-Oriented Design](https://banes-lab.com/ontology/principles/architecture-category-solid-object-oriented-design.md)
- [Observability / Auditability / Traceability](https://banes-lab.com/ontology/principles/architecture-category-observability-auditability-traceability.md)
- [Behavioral Patterns](https://banes-lab.com/ontology/lexicon/lexicon-category-behavioral-patterns.md)
- [Runtime Discovery / Dynamic Binding](https://banes-lab.com/ontology/lexicon/lexicon-category-runtime-discovery-dynamic-binding.md)
- [Severity levels](https://banes-lab.com/ontology/schema/the-vocabulary-severity.md)
- [The resolutions](https://banes-lab.com/ontology/schema/the-resolutions.md)