Enum ShardMode 

pub enum ShardMode {
    Uniform,
    Ordered,
}

How keys are mapped to shards.

Variants

Uniform

Shard = Fibonacci hash of the key’s leading bytes. Spreads any key distribution (including sequential ids) evenly across shards. Global iteration order is not the key order. Use for lookup tables.

Ordered

Shard = top bits of the key’s leading bytes. Shard index order equals key order, so Arena::iter yields globally ascending keys and Arena::range scans work. Keys arriving in a narrow value range will concentrate in few shards — their chains simply grow longer; that is the trade-off for ordering.

Trait Implementations

impl Clone for ShardMode

fn clone(&self) -> ShardMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ShardMode

impl Debug for ShardMode

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

Formats the value using the given formatter.

impl Eq for ShardMode

impl PartialEq for ShardMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ShardMode