@subspace/jump-consistent-hash

Jump-consistent hash implementation

Read https://arxiv.org/abs/1406.2294 for details, this package works with 64-bit/8-byte inputs in form of Uint8Arrays.

How to install

npm install @subspace/jump-consistent-hash

NOTE: Requires Node.js v12+ or modern browser with BigInt support

How to use

TypeScript:

import {randomBytes} from 'crypto';
import {jumpConsistentHash} from '@subspace/jump-consistent-hash';

const bucket = jumpConsistentHash(randomBytes(8), 10);

API

jumpConsistentHash.jumpConsistentHash(key: Uint8Array, numBuckets: number): number

Takes a key and number of buckets and returns bucket from range [0, numBuckets).

• key - 8 bytes key
• numBuckets - number of buckets to which keys should be distributed