# In-Place Mutation

> Overwriting existing records in place where an append-only log is required, destroying history.

Record: `lexicon:in-place-mutation`
Kind: anti-pattern
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-in-place-mutation

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [In-Memory Direct Invocation](https://banes-lab.com/records/lexicon/in-memory-direct-invocation.md) and before [Infinite Redelivery Loop](https://banes-lab.com/records/lexicon/infinite-redelivery-loop.md).

## Category

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

## Negated by

- [Append-Only Log](https://banes-lab.com/records/architecture/append-only-log.md)

## Linked from

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