# Architecture principles whose scope is correctness

> 1 record

This index as JSON: https://banes-lab.com/json/api/facets/architecture/scope/correctness

## Entries

- [Idempotent Consumer](https://banes-lab.com/records/architecture/idempotent-consumer.md): A design pattern in which a consumer records each message it has processed, so a redelivered message has no second effect.