---
slug: "StateSnapshot"
name: "StateSnapshot"
type: "Primitives"
layer: "Infrastructure"
ref: "StateSnapshot#d757"
sema_id: "sema:StateSnapshot#mh:SHA-256:d75752f332fe14ae3abf2253a45ab180034d2becc3a7e19e3e30da3c94b3c636"
tags: ["Infrastructure","Primitives"]
updated: 2026-11-11
mindscape: "bootstrap"
index_url: https://mindscape.pages.dev/bootstrap/index.json
url: https://mindscape.pages.dev/bootstrap/StateSnapshot/
related: ["IdempotentWrite","Snapshot","State","Trace","FractalIntelligence"]
---

# StateSnapshot

Durable persistence of volatile state

Layer: Infrastructure · Category: Primitives

## Mechanism

Periodic serialization of internal volatile [State](https://mindscape.pages.dev/bootstrap/State.md) to durable storage to enable crash recovery. Unlike distributed checkpoints (which requires consensus), [Snapshot](https://mindscape.pages.dev/bootstrap/Snapshot.md) is a local or unilateral durability guarantee. It enables 'Resume' functionality. Utilizes [Trace](https://mindscape.pages.dev/bootstrap/Trace.md), [IdempotentWrite](https://mindscape.pages.dev/bootstrap/IdempotentWrite.md).

## Invariants

- Atomicity: [Snapshot](https://mindscape.pages.dev/bootstrap/Snapshot.md) is either fully written or discarded (no partial corruption)
- Roundtrip Integrity: Deserialize(Serialize(S)) must equal S

## Preconditions

- Serializable [State](https://mindscape.pages.dev/bootstrap/State.md)
- Write access to durable storage

## Postconditions

- Resume point established

## Failure modes

—

## Signature

- `State(Snapshot)`

## Builds on

- [IdempotentWrite](https://mindscape.pages.dev/bootstrap/IdempotentWrite.md) (Infrastructure; References)
- [Snapshot](https://mindscape.pages.dev/bootstrap/Snapshot.md) (Infrastructure; References)
- [State](https://mindscape.pages.dev/bootstrap/State.md) (Infrastructure; References)
- [Trace](https://mindscape.pages.dev/bootstrap/Trace.md) (Infrastructure; References)

## Used by

- [FractalIntelligence](https://mindscape.pages.dev/bootstrap/FractalIntelligence.md) (Mind; Composes with)

## Identity

- Sema ID: `sema:StateSnapshot#mh:SHA-256:d75752f332fe14ae3abf2253a45ab180034d2becc3a7e19e3e30da3c94b3c636`
- Ref: `StateSnapshot#d757`
- Supersedes:
  - `sema:StateSnapshot#mh:SHA-256:9ffc9d057109f26717249d3a4c46dfaa52a944d10a363034bca187b83305f39f`
  - `sema:StateSnapshot#mh:SHA-256:17a545e1632273e11d37315e7ad7e7e355c38bb6decf379ce9091129f80a06f9`
  - `sema:StateSnapshot#mh:SHA-256:5791e43fad7e1f42cb7451eec53c6bfa9fef567b30a14d05be269116203e5848`
  - `sema:StateSnapshot#mh:SHA-256:53b2f1c57a571f308d8ce1686edf0fbbbc178bf35d96b2a445bcebeda01208aa`
  - `sema:StateSnapshot#mh:SHA-256:56fe3bd8ddf82906d7a28b5e978207b6224227f51a6a2c6dfcdc14fafdd5f05b`
  - `sema:StateSnapshot#mh:SHA-256:0a0fee933e452552f3128e0f5491a74cdb132c8417dfc3cf2e6f1e2141e0b21b`

## Links

- [Pattern page](https://mindscape.pages.dev/bootstrap/StateSnapshot/)
- [View in the interactive graph](https://mindscape.pages.dev/bootstrap/#StateSnapshot)
- [JSON](https://mindscape.pages.dev/bootstrap/StateSnapshot.json)
- [Index of all patterns](https://mindscape.pages.dev/bootstrap/index.json)