# Non-Repeatable Side Effects

> Side effects whose repetition changes the outcome, so retrying an operation double-applies them.

Record: `lex:non-repeatable-side-effects`
Kind: anti-pattern
Layer: [Atomic Boundary](https://banes-lab.com/records/layer/atomic-boundary.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-non-repeatable-side-effects

## category

- [Transactions / State / Concurrency](https://banes-lab.com/records/lex-category/transactions-state-concurrency.md)

## referenced-by

- [Idempotency](https://banes-lab.com/records/arch/idempotency.md)