cuid

Collision-resistant hashes for the cloud, in Go.

The cuid package provides collision-resistant ids optimized for horizontal scaling and sequential lookup performance. This README file is just going to cover the basics and the Go-specific implementation details.

Please refer to the main project site for the full rationale behind CUIDs.

Sample CUID

ch72gsb320000udocl363eofy

Sample CUID Slug

ew0k9fwpl

Installation

go get -u github.com/lucsky/cuid

Example usage

package main

import (
    "crypto/rand"
    "fmt"

    "github.com/lucsky/cuid"
)

func main() {
    // Generate pseudo-random CUID
    fmt.Println(cuid.New())
    // Generate slug
    fmt.Println(cuid.Slug())

    // Generate cryptographic-random CUID
    c, err := cuid.NewCrypto(rand.Reader)
    if err != nil {
        fmt.Printf("%v", err)
        return
    }
    fmt.Println(c)
}

Go package specific features

The Go cuid package provides APIs to specify a custom random source as well as a custom counter. A custom counter implementation could provide a centralized Redis base counter, for example.

Contributors

• Luc Heinrich (@lucsky, author)
• Thomas Hopkins (@hopkinsth)
• fiatjaf
• Marcus Dantas (@mpsdantas)
• Oscar Forner Martinez (@maitesin)
• Mike Frey (@mikefrey)
• Andris Mednis (@andrismednis)