Module snapshot 

Snapshot isolation for ACID compliance

This module provides the SnapshotId type which enforces that all read operations only observe data committed at or before a specific transaction snapshot.

Hard Rule

No API may observe state not bound to a committed snapshot_id.

If a value cannot be tied to a committed snapshot → it does not exist.

Example

use sqlitegraph::snapshot::SnapshotId;

// Get current snapshot (only committed data visible)
let snapshot = SnapshotId::current();

// Read from database using snapshot
let node = backend.get_node(snapshot, node_id)?;

// Create snapshot from specific transaction
let snapshot = SnapshotId::from_tx(12345);

Structs

SnapshotId

Snapshot identifier - points to committed transaction state