# Consumer

> A component that receives and processes messages from a queue or topic.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Compensating Transactions](https://banes-lab.com/records/lexicon/compensating-transactions.md) and before [Deduplication Key](https://banes-lab.com/records/lexicon/deduplication-key.md).

## Category

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

## Required by

- [Message Queue](https://banes-lab.com/records/architecture/message-queue.md)

## Linked from

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