github.com/oywc410/goSnowFlake

一个实现 Twitter SnowFlake 算法 的 Go 分布式 UID 生成器.A threadsafe unique ID generator inspired by Twitter SnowFlake theory


License
MIT
Install
go get github.com/oywc410/goSnowFlake

Documentation

goSnowFlake

Build Status GoDoc

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

goSnowFlake

Feature

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

Description

0               41             51           64
+---------------+----------------+-----------+
|timestamp(ms)  | worker node id | sequence  |
+---------------+----------------+-----------+

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)
        }
    }
}

Documentation

License

Copyright (c) 2016 by zheng-ji released under MIT License.