uuix
uuix
A tiny (<1KB) and fast UUID (v4) generator for Crystal
This is the Crystal version of @lukeed/uuid
Installation
-
Add the dependency to your
shard.yml
:dependencies: uuix: github: krthr/uuix
-
Run
shards install
Usage
require "uuix"
puts UUIX.random # bc524cd7-5ec3-48c4-9bcc-e9013c69dd6e
Benchmarks
Actual version:
Using String.build (to optimize string generation). Proposed by Sergey Kuznetsov in this thread
Crystal 1.1.1 [6d9a1d583] (2021-07-26)
LLVM: 10.0.1
Default target: x86_64-unknown-linux-gnu
UUIX: 2.71M (368.51ns) (± 9.29%) 321B/op fastest
Crystal UUID: 1.15M (867.45ns) (± 3.78%) 0.0B/op 2.35× slower
Original version:
Crystal 0.33.0 [612825a53] (2020-02-14)
LLVM: 8.0.0
Default target: x86_64-unknown-linux-gnu
UUIX: 920.14k ( 1.09µs) (± 9.68%) 880B/op fastest
Crystal UUID: 647.32k ( 1.54µs) (± 7.53%) 0.0B/op 1.42× slower
Performance
Taken from https://github.com/lukeed/uuid
The reason why this UUID.V4 implementation is so much faster is two-fold:
- It composes an output with hexadecimal pairs (from a cached dictionary) instead of single characters.
- It allocates a larger Buffer/ArrayBuffer up front (expensive) and slices off chunks as needed (cheap).
The internal ArrayBuffer is 4096 bytes, which supplies 256 random
invocations.
A larger buffer would result in higher performance over time, but I found this to be a good balance of performance and memory space.
Contributing
- Fork it (https://github.com/krthr/uuix/fork)
- Create your feature branch (
git checkout -b my-new-feature
) - Commit your changes (
git commit -am 'Add some feature'
) - Push to the branch (
git push origin my-new-feature
) - Create a new Pull Request
Contributors
- krthr - creator and maintainer
Repository
uuix
Owner
Statistic
- 19
- 1
- 1
- 1
- 0
- over 3 years ago
- February 29, 2020
License
MIT License
Links
Synced at
Sun, 22 Dec 2024 09:38:09 GMT
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