nanoid.cr

Crystal implementation of original NanoID

Installation

Add this to your application's shard.yml:

dependencies:
  nanoid:
    github: mamantoha/nanoid.cr

Usage

require "nanoid"

Nanoid.generate uses URL-friendly symbols (A-Za-z0-9_-) and returns an ID with 21 characters.

Nanoid.generate
# => 3gFI8yZxcfXsXGhB0036l

If you want to reduce ID length (and increase collisions probability), you can pass the length as an argument.

Nanoid.generate(size: 8, alphabet: "1234567890abcdef")
# => 86984b57

Non-secure API is also available.

Nanoid.generate(secure: false)
# => no0MmiInNcBm9jR2_3sGt

Nanoid.generate(size: 10, alphabet: "1234567890abcdef", secure: false)
# => 2793b2351c

Benchmark

crystal run --release bench/benchmark.cr

Crystal 1.10.0 (2023-10-09)

LLVM: 15.0.7
Default target: aarch64-apple-darwin23.0.0

    Nanoid.simple_generate(21)   3.93  (254.56ms) (± 0.67%)  76.4MB/op   3.38× slower
   Nanoid.complex_generate(21)   3.35  (298.92ms) (± 0.93%)  91.7MB/op   3.97× slower
Nanoid.non_secure_generate(21)  13.27  ( 75.37ms) (± 7.77%)  45.9MB/op        fastest
                       UUID v4   3.74  (267.40ms) (± 1.04%)   168MB/op   3.55× slower
    Nanoid.simple_generate(36)   3.48  (286.96ms) (± 0.70%)   107MB/op   2.32× slower
   Nanoid.complex_generate(36)   2.95  (339.27ms) (± 0.61%)   122MB/op   2.75× slower
Nanoid.non_secure_generate(36)   8.10  (123.45ms) (± 1.24%)  61.1MB/op        fastest
                       UUID v4   3.75  (266.92ms) (± 1.30%)   168MB/op   2.16× slower

Development

Clone this repository and install dependencies:

shards install

Run tests:

crystal spec

Contributing

Fork it (https://github.com/mamantoha/nanoid.cr/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

mamantoha Anton Maminov - creator, maintainer

License

This library is distributed under the MIT license. Please see the LICENSE file.