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Fast, scalable unique ID generation

Project description

Implementation of 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.

NOTE: Particularly if you have security concerns, the cuid standard has been deprecated in favor of cuid2!

Tested on CPython 2.7, 3.6-3.11 as well as PyPy & PyPy3.

Rough benchmarks on my machine (i7-8750H CPU @ 2.20GHz) using bench (which times the creation of 1 million cuids):

Version ns / cuid
CPython 3.7.3 6095.257
CPython 3.6.8 6846.050
CPython 3.5.6 6604.012
CPython 2.7.16 6913.681
PyPy 7.1.1 (Python 2.7.13) 326.344
PyPy3 7.1.1 (Python 3.6.1) 562.673

(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)

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

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