https://github.com/remeh/goid

Basic package to generate pseudo-random unique IDs.
https://github.com/remeh/goid

Last synced: about 1 month ago
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Basic package to generate pseudo-random unique IDs.

• Host: GitHub
• URL: https://github.com/remeh/goid
• Owner: remeh
• Created: 2014-07-07T17:55:13.000Z (over 10 years ago)
• Default Branch: dev
• Last Pushed: 2014-07-14T12:23:14.000Z (over 10 years ago)
• Last Synced: 2024-10-12T22:30:40.213Z (2 months ago)
• Language: Go
• Size: 141 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# goid

Basic package to generate pseudo-random unique IDs.

## Example

By providing the dictionary:

```

	dictionary := make([]byte, 4)

	dictionary[0] = '0'

	dictionary[1] = 'A'

	dictionary[2] = '2'

	dictionary[3] = 'z'

```

You're able to generate as many IDs as you want by providing the number

of already generated keys :

```

	for i := 0; i < 20; i++ {

        fmt.Println(goid.GenerateNext(dictionary, i, 0));

    }

```

Displays :

```

0

A

2

z

0A

AA

2A

zA

02

A2

22

z2

0z

Az

2z

zz

00A

A0A

20A

z0A

0AA

AAA

2AA

zAA

02A

A2A

```

This algorithm is limited to generate `(2^31) - 1` different values (signed int max) due to its design. It's a design choice : it could have been easily extended by using int64 but the performance should have been impacted.

## Roadmap

  - Randomized dictionary