Enum SnapshotConsistency 

pub enum SnapshotConsistency {
    Atomic,
    BestEffort,
}

The consistency guarantee attached to a StorageSnapshot.

Exact built-in backends (Memory, Journal, and SQLite) return Atomic: trial deltas, requested state, and outbox records came from one backend read epoch. A remote wrapper preserves that marker only when its wrapped backend does; a remote wrapper around a source-compatible custom backend remains BestEffort. The default Storage::read_snapshot implementation preserves third-party source compatibility through separate reads and therefore returns BestEffort. Callers must not present that result as an atomic observation.

Variants

Atomic

Every returned component came from one backend linearization point.

BestEffort

Components were read sequentially and can span concurrent writes.

Trait Implementations

impl Clone for SnapshotConsistency

fn clone(&self) -> SnapshotConsistency

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SnapshotConsistency

impl Debug for SnapshotConsistency

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for SnapshotConsistency

impl PartialEq for SnapshotConsistency

fn eq(&self, other: &SnapshotConsistency) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SnapshotConsistency