# Service Registry

> A mechanism where services or plugins register under a key and are resolved by that key at runtime.

Record: `architecture:service-registry`
Kind: mechanism
Layer: [Extensibility Core](https://banes-lab.com/records/layer/extensibility-core.md)
Severity: contextual
Scope: runtime, service, plugin
Canonical: https://banes-lab.com/ontology#architecture-service-registry

Listed in [Architecture principles](https://banes-lab.com/api/records/architecture.md), after [Dependency Injection](https://banes-lab.com/records/architecture/dependency-injection.md) and before [Registry Pattern](https://banes-lab.com/records/architecture/registry-pattern.md).

## Repair

- Refactored by: Register Service, Add Discovery Client
- Detected by: static lookup tables
- Violated by: manual endpoint/plugin lookup
- Measured by: registry coverage
- Enforced by: startup checks, [health checks](https://banes-lab.com/records/architecture/health-checks.md)

## Requires

- [Registration Protocol](https://banes-lab.com/records/lexicon/registration-protocol.md)

## Reinforces

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

## Enables

- [Dynamic Resolution](https://banes-lab.com/records/lexicon/dynamic-resolution.md)

## Conflicts with

- [Hardcoded Lookup](https://banes-lab.com/records/lexicon/hardcoded-lookup.md)

## In tension with

- [Registry Availability](https://banes-lab.com/records/lexicon/registry-availability.md)

## Tensions

- [Service Registry / Registry Availability](https://banes-lab.com/records/tension/registry-availability-service-registry.md)

## Severity

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

## Category

- [Plugin / Extensibility / IoC](https://banes-lab.com/records/architecture-category/plugin-extensibility-ioc.md)

## Required by

- [Service Discovery](https://banes-lab.com/records/architecture/service-discovery.md)

## Linked from

- [Runtime Discovery / Dynamic Binding](https://banes-lab.com/ontology/principles/architecture-category-runtime-discovery-dynamic-binding.md)
- [Core Vocabulary](https://banes-lab.com/ontology/lexicon/lexicon-category-core-vocabulary.md)
- [Plugin / Extensibility / IoC](https://banes-lab.com/ontology/lexicon/lexicon-category-plugin-extensibility-ioc.md)
- [Severity levels](https://banes-lab.com/ontology/schema/the-vocabulary-severity.md)
- [The resolutions](https://banes-lab.com/ontology/schema/the-resolutions.md)