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Implementation of the Jump Consistent Hash algorithm

Project description

Jump Consistent Hash

Build Status

Python and C implementation of the jump consistent hash algorithm by John Lamping and Eric Veach[1]. Tested on Python 3.8+.

Install

To install Jump Consistent Hash, simply run this simple command in your terminal of choice:

$ pip install jump-consistent-hash

The C implementation is optional but is about 10x faster than the pure Python implementation in CPython.

Usage

>>> import jump
>>> jump.hash(256, 1024)
520

If you want to use a str as a key instead of an int, you can pass it through a hash function to compute a real key. Here’s a couple of examples using Python 3:

>>> import hashlib
>>> int(hashlib.md5(b"127.0.0.1").hexdigest(), 16)
325870950296970981340734819828239218902

>>> int(hashlib.sha1(b"127.0.0.1").hexdigest(), 16)
431133456357828263809343936597625557575256328153

>>> import binascii
>>> binascii.crc32(b"127.0.0.1") & 0xffffffff
3619153832

>>> abs(hash("127.0.0.1"))
7536019783825143230

Project details


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jump_consistent_hash-3.4.0-pp39-pypy39_pp73-win_amd64.whl (10.1 kB view hashes)

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jump_consistent_hash-3.4.0-pp39-pypy39_pp73-macosx_10_9_x86_64.whl (6.5 kB view hashes)

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Uploaded PyPy manylinux: glibc 2.17+ x86-64 manylinux: glibc 2.5+ x86-64

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Uploaded PyPy macOS 10.9+ x86-64

jump_consistent_hash-3.4.0-cp311-cp311-win_amd64.whl (10.0 kB view hashes)

Uploaded CPython 3.11 Windows x86-64

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jump_consistent_hash-3.4.0-cp311-cp311-musllinux_1_1_x86_64.whl (18.5 kB view hashes)

Uploaded CPython 3.11 musllinux: musl 1.1+ x86-64

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Uploaded CPython 3.11 musllinux: musl 1.1+ i686

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Uploaded CPython 3.11 musllinux: musl 1.1+ ARM64

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Uploaded CPython 3.11 manylinux: glibc 2.17+ ARM64

jump_consistent_hash-3.4.0-cp311-cp311-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (12.9 kB view hashes)

Uploaded CPython 3.11 manylinux: glibc 2.17+ x86-64 manylinux: glibc 2.5+ x86-64

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Uploaded CPython 3.11 manylinux: glibc 2.17+ i686 manylinux: glibc 2.5+ i686

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jump_consistent_hash-3.4.0-cp311-cp311-macosx_10_9_x86_64.whl (6.6 kB view hashes)

Uploaded CPython 3.11 macOS 10.9+ x86-64

jump_consistent_hash-3.4.0-cp311-cp311-macosx_10_9_universal2.whl (8.6 kB view hashes)

Uploaded CPython 3.11 macOS 10.9+ universal2 (ARM64, x86-64)

jump_consistent_hash-3.4.0-cp310-cp310-win_amd64.whl (10.0 kB view hashes)

Uploaded CPython 3.10 Windows x86-64

jump_consistent_hash-3.4.0-cp310-cp310-win32.whl (10.0 kB view hashes)

Uploaded CPython 3.10 Windows x86

jump_consistent_hash-3.4.0-cp310-cp310-musllinux_1_1_x86_64.whl (17.6 kB view hashes)

Uploaded CPython 3.10 musllinux: musl 1.1+ x86-64

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jump_consistent_hash-3.4.0-cp310-cp310-musllinux_1_1_aarch64.whl (17.6 kB view hashes)

Uploaded CPython 3.10 musllinux: musl 1.1+ ARM64

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Uploaded CPython 3.10 manylinux: glibc 2.17+ ARM64

jump_consistent_hash-3.4.0-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (12.9 kB view hashes)

Uploaded CPython 3.10 manylinux: glibc 2.17+ x86-64 manylinux: glibc 2.5+ x86-64

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Uploaded CPython 3.10 manylinux: glibc 2.17+ i686 manylinux: glibc 2.5+ i686

jump_consistent_hash-3.4.0-cp310-cp310-macosx_11_0_arm64.whl (7.0 kB view hashes)

Uploaded CPython 3.10 macOS 11.0+ ARM64

jump_consistent_hash-3.4.0-cp310-cp310-macosx_10_9_x86_64.whl (6.6 kB view hashes)

Uploaded CPython 3.10 macOS 10.9+ x86-64

jump_consistent_hash-3.4.0-cp310-cp310-macosx_10_9_universal2.whl (8.6 kB view hashes)

Uploaded CPython 3.10 macOS 10.9+ universal2 (ARM64, x86-64)

jump_consistent_hash-3.4.0-cp39-cp39-win_amd64.whl (10.0 kB view hashes)

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jump_consistent_hash-3.4.0-cp39-cp39-win32.whl (10.0 kB view hashes)

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Uploaded CPython 3.9 musllinux: musl 1.1+ x86-64

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jump_consistent_hash-3.4.0-cp39-cp39-musllinux_1_1_aarch64.whl (17.4 kB view hashes)

Uploaded CPython 3.9 musllinux: musl 1.1+ ARM64

jump_consistent_hash-3.4.0-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (13.3 kB view hashes)

Uploaded CPython 3.9 manylinux: glibc 2.17+ ARM64

jump_consistent_hash-3.4.0-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (12.8 kB view hashes)

Uploaded CPython 3.9 manylinux: glibc 2.17+ x86-64 manylinux: glibc 2.5+ x86-64

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Uploaded CPython 3.9 manylinux: glibc 2.17+ i686 manylinux: glibc 2.5+ i686

jump_consistent_hash-3.4.0-cp39-cp39-macosx_11_0_arm64.whl (6.9 kB view hashes)

Uploaded CPython 3.9 macOS 11.0+ ARM64

jump_consistent_hash-3.4.0-cp39-cp39-macosx_10_9_x86_64.whl (6.6 kB view hashes)

Uploaded CPython 3.9 macOS 10.9+ x86-64

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Uploaded CPython 3.9 macOS 10.9+ universal2 (ARM64, x86-64)

jump_consistent_hash-3.4.0-cp38-cp38-win_amd64.whl (10.0 kB view hashes)

Uploaded CPython 3.8 Windows x86-64

jump_consistent_hash-3.4.0-cp38-cp38-win32.whl (10.0 kB view hashes)

Uploaded CPython 3.8 Windows x86

jump_consistent_hash-3.4.0-cp38-cp38-musllinux_1_1_x86_64.whl (17.6 kB view hashes)

Uploaded CPython 3.8 musllinux: musl 1.1+ x86-64

jump_consistent_hash-3.4.0-cp38-cp38-musllinux_1_1_i686.whl (17.9 kB view hashes)

Uploaded CPython 3.8 musllinux: musl 1.1+ i686

jump_consistent_hash-3.4.0-cp38-cp38-musllinux_1_1_aarch64.whl (17.7 kB view hashes)

Uploaded CPython 3.8 musllinux: musl 1.1+ ARM64

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Uploaded CPython 3.8 manylinux: glibc 2.17+ ARM64

jump_consistent_hash-3.4.0-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (13.3 kB view hashes)

Uploaded CPython 3.8 manylinux: glibc 2.17+ x86-64 manylinux: glibc 2.5+ x86-64

jump_consistent_hash-3.4.0-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl (13.5 kB view hashes)

Uploaded CPython 3.8 manylinux: glibc 2.17+ i686 manylinux: glibc 2.5+ i686

jump_consistent_hash-3.4.0-cp38-cp38-macosx_11_0_arm64.whl (6.9 kB view hashes)

Uploaded CPython 3.8 macOS 11.0+ ARM64

jump_consistent_hash-3.4.0-cp38-cp38-macosx_10_9_x86_64.whl (6.6 kB view hashes)

Uploaded CPython 3.8 macOS 10.9+ x86-64

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Uploaded CPython 3.8 macOS 10.9+ universal2 (ARM64, x86-64)

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