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 | ns / cuid |
|---|---|
| CPython 3.6 | 11368 |
| CPython 3.5 | 9834 |
| CPython 3.4 | 9665 |
| CPython 2.7 | 8869 |
| PyPy 5.6.0 | 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.