A fast, scalable unique ID generator for Python
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.conda-recipe
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.travis.yml
MANIFEST.in
README.md
cuid.py
setup.cfg
setup.py
test_cuid.py
tox.ini

README.md

cuid.py Build Status

Implementation of https://github.com/ericelliott/cuid in Python.

A cuid is a portable and sequentially-ordered unique identifier designed for horizontal scalability and speed -- this version is ported from the reference implementation in Javascript.

Tested on CPython 2.7-3.6 as well as PyPy & PyPy3 -- see Travis-CI link above.

Rough benchmarks on my machine (mid-2014 Macbook Pro, 2.8GHz i7) using setup.py bench (which times the creation of 1 million cuids):

Version μs / cuid
CPython 3.6 11.368
CPython 3.5 9.834
CPython 3.4 9.665
CPython 2.7 8.869
PyPy 5.6.0 0.508

(Note that timing the creation of fewer IDs changes the way PyPy runs the code, because of JIT warmup -- obviously creating this many IDs takes advantage of the warmed JIT)

Note: For now, this has no dependencies outside the standard library -- in time this may change, to provide better random numbers and / or performance.