# Invalidation Policy

> The rules determining when cached entries are considered stale and must be refreshed or evicted.

Record: `lex:invalidation-policy`
Kind: constraint
Layer: [Performance Core](https://banes-lab.com/records/layer/performance-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-invalidation-policy

## category

- [Scalability / Performance / Optimization](https://banes-lab.com/records/lex-category/scalability-performance-optimization.md)

## referenced-by

- [Caching](https://banes-lab.com/records/arch/caching.md)