# Message Relay

> A component that reads pending messages from an outbox and publishes them to the broker.

Record: `lexicon:message-relay`
Kind: mechanism
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-message-relay

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Message Queue/Topics](https://banes-lab.com/records/lexicon/message-queue-topics.md) and before [Ordered Log](https://banes-lab.com/records/lexicon/ordered-log.md).

## Category

- [Event Messaging Async](https://banes-lab.com/records/lexicon-category/event-messaging-async.md)

## Required by

- [Outbox Pattern](https://banes-lab.com/records/architecture/outbox-pattern.md)

## Linked from

- [Event / Messaging / Asynchronous Architecture](https://banes-lab.com/ontology/principles/architecture-category-event-messaging-asynchronous-architecture.md)