Enum Quorum 

pub enum Quorum {
    One,
    Majority,
    All,
    N(NonZeroUsize),
}

How many replicas must respond for an operation to be considered successful.

A DHT operation is answered by several nodes, and a caller trades latency against confidence by choosing how many of them to wait for.

Variants

One

One replica suffices. Lowest latency, weakest guarantee.

Majority

A majority of the replication factor.

All

Every replica in the replication factor.

N(NonZeroUsize)

An explicit number of replicas.

Implementations

impl Quorum

pub fn resolve(self, replication_factor: NonZeroUsize) -> usize

Resolves this quorum to a concrete replica count for a replication factor.

The result is clamped to replication_factor, so N larger than the replication factor is treated as All rather than being unsatisfiable.

Trait Implementations

impl Clone for Quorum

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Quorum

impl Debug for Quorum

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

Formats the value using the given formatter.

impl Eq for Quorum

impl PartialEq for Quorum

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Quorum