A Go distributed UID generator that implements the Twitter snowflake algorithm

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Gosnowflake

Distributed thread-safe UID generator implemented according to Twitter Snowflake algorithm

Feature

• Thread-Safe UID generator

• Green pluggable, no reliance on redis,mysql, no status

• Suitable for distributed systems

• Implementing the Twitter Snowflake theory

Description

0               41                 51                   64+---------------+----------------+-----------+|timestamp(ms)  | worker node id | sequence      |+---------------+----------------+-----------+id  = timestamp | workerid | sequence (eg. 1451063443347648410)

Consists of three parts combined with operations, namely millisecond-level timestamps, machine Workerid, and serial numbers to resolve conflicts

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 != nill {                        fmt.Println(id)        }        }}

Documentation

• Twitter Blog Reference

• Reddit discuss

License

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