Jumphash

Jump Consistent Hash algorithm

License	MIT
GroupId	com.streametry
ArtifactId	jumphash
Last Version	1.0
Release Date	Aug 18, 2014
Type	jar
Description	Jumphash Jump Consistent Hash algorithm
Project URL	https://github.com/streametry/jumphash
Source Code Management	https://github.com/streametry/jumphash

Download jumphash

Filename	Size
jumphash-1.0.pom
jumphash-1.0.jar	1 KB
jumphash-1.0-sources.jar	1 KB
jumphash-1.0-javadoc.jar	18 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/com.streametry/jumphash/ -->
<dependency>
    <groupId>com.streametry</groupId>
    <artifactId>jumphash</artifactId>
    <version>1.0</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/com.streametry/jumphash/
implementation 'com.streametry:jumphash:1.0'

Gradle Kotlin

// https://jarcasting.com/artifacts/com.streametry/jumphash/
implementation ("com.streametry:jumphash:1.0")

Apache Buildr

'com.streametry:jumphash:jar:1.0'

Apache Ivy

<dependency org="com.streametry" name="jumphash" rev="1.0">
  <artifact name="jumphash" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='com.streametry', module='jumphash', version='1.0')
)

Scala SBT

libraryDependencies += "com.streametry" % "jumphash" % "1.0"

Leiningen

[com.streametry/jumphash "1.0"]

Dependencies

compile (1)

Group / Artifact	Type	Version
com.google.guava : guava	jar	17.0

test (1)

Group / Artifact	Type	Version
junit : junit	jar	4.+

Project Modules

There are no modules declared in this project.

JumpHash

Jump Consistent Hashing algorithm in Java

Abstract from the paper http://arxiv.org/abs/1406.2294:

We present jump consistent hash, a fast, minimal memory, consistent hash algorithm that can be expressed in about 5 lines of code. In comparison to the algorithm of Karger et al., jump consistent hash requires no storage, is faster, and does a better job of evenly dividing the key space among the buckets and of evenly dividing the workload when the number of buckets changes. Its main limitation is that the buckets must be numbered sequentially, which makes it more suitable for data storage applications than for distributed web caching.

Uses Guava library for unsigned longs.

Usage

int bucket = JumpHash.consistent(nrOfBuckets, myObject);

Download

Available on Maven central:

• com.streametry:jumphash:1.0

Requires Java 1.8

Build

gradle jar

License

MIT

streametry

Real-time metrics store

Versions

Version
1.0 Aug 18, 2014