# Forward-Only State Model

> The requirement that processing keep only forward-moving state, never needing to revisit earlier input.

Record: `lex:forward-only-state-model`
Kind: constraint
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-forward-only-state-model

## category

- [Streaming / Pipeline / Dataflow Processing](https://banes-lab.com/records/lex-category/streaming-pipeline-dataflow-processing.md)

## referenced-by

- [Single-Pass Processing](https://banes-lab.com/records/arch/single-pass-processing.md)