# Externalized State

> The requirement that session or request state be held outside the serving instance, in a shared store.

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

## category

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

## referenced-by

- [Statelessness](https://banes-lab.com/records/arch/statelessness.md)