0.0.10 (2026-02-03)

Features

Configurable shard assignment with rendezvous hashing

Implements configurable shard assignment strategies for better distribution and performance.

New Features

ShardAssignmentStrategy enum

Choose between different shard assignment algorithms:

• Rendezvous (default): Near-perfect distribution with O(shards × nodes) complexity
• RendezvousParallel: Same as Rendezvous but parallelized with Rayon (8x faster for 100+ nodes)
• ConsistentHash: Ring-based consistent hashing with configurable vnodes (requires consistent-hash feature)

Benchmark Results (2048 shards, 100 nodes)

Strategy	Time
RendezvousParallel	1.35 ms
Rendezvous	10.9 ms
ConsistentHash	175 ms

Configuration

use cruster::shard_assigner::ShardAssignmentStrategy;
use cruster::config::ShardingConfig;

let config = ShardingConfig {
    assignment_strategy: ShardAssignmentStrategy::RendezvousParallel,
    // ...
};

Feature Flags

• parallel: Enables RendezvousParallel strategy (requires rayon)
• consistent-hash: Enables ConsistentHash strategy (requires hashring)