pkg.gl

Categorygithub.com/zheng-ji/gosnowflake

modulepackage

0.0.0-20180906112711-fc763800eec9

Repository: https://github.com/zheng-ji/gosnowflake.git

Documentation: pkg.go.dev

# README

goSnowFlake

A threadsafe unique ID generator inspired by Twitter SnowFlake theory

根据 Twitter SnowFlake 算法，实现的分布式线程安全 UID 生成器

Feature

ThreadSafe unique id generator
Green pluggable, without external storage like Redis or MySQL
Suitable for distributed systems
Implement Twitter's SnowFlake theory

Description

+---------------+----------------+----------------+
|timestamp(ms)42  | worker id(10) | sequence(12)  |
+---------------+----------------+----------------+

id  = timestamp | workerid | sequence (eg. 1451063443347648410)

An unique ID contains 3 parts:

a timestamp in nanosecond
a worker ID
a sequence number

Installation

go get github.com/zheng-ji/goSnowFlake

Example

import (
	"fmt"
	"github.com/zheng-ji/goSnowFlake"
)

func main() {
    // Params: Given the workerId, 0 < workerId < 1024
	iw, err := goSnowFlake.NewIdWorker(1) 
	if err!= nil {
		fmt.Println(err)
	}
	for i := 0; i < 100; i++ {
		if id, err := iw.NextId(); err != nil {
            fmt.Println(err)
        } else{
            fmt.Println(id)
        }
	}
}