# Consistency Lag

> The degree to which replicas trail the primary, so reads served from them may return stale data.

Record: `lex:consistency-lag`
Kind: quality-attribute
Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-consistency-lag

## category

- [Self-Healing / Recovery / Deployment Safety](https://banes-lab.com/records/lex-category/self-healing-recovery-deployment-safety.md)

## referenced-by

- [Replication](https://banes-lab.com/records/arch/replication.md)