dxyflake

duoxieyun distributed unique ID generator inspired by Twitter's Snowflake

ID Format

+------------------------------------------------------------------------------------------+
| 1 Bit Unused | 41 Bit Timestamp | 5 Bit MachineID | 5 Bit ServiceID | 12 Bit Sequence ID |
+------------------------------------------------------------------------------------------+

41 bits for time in units of 10 msec (697 years)
 5 bits for a machine id (32 nodes)
 5 bits for a service id (32 services per node)
12 bits for a sequence number (0 ~ 4095)

Install

go get github.com/GiterLab/dxyflake

Usage

package main

import (
    "fmt"
    "os"

    "github.com/GiterLab/dxyflake"
)

func main() {
    s := dxyflake.Settings{}
    s.Init(0, 0) // set mID & sID
    dxyid := dxyflake.NewDxyflake(s)

    id, err := dxyid.NextID()
    if err != nil {
        fmt.Println(err)
        os.Exit(0)
    }
    fmt.Println(id, id.LeadingZerosString(19), dxyflake.Decompose(id))
    idBase64 := id.Base64()
    id, err = dxyflake.ParseBase64(idBase64)
    if err != nil {
        fmt.Println(err)
        os.Exit(0)
    }
    fmt.Println(idBase64, "-->", id)

    // 19 MAX
    fmt.Println("9223372036854775807", dxyflake.Decompose(dxyflake.ID(9223372036854775807))) // 697 years
}

// Output:
//
// 475370495148032 0000475370495148032 map[id:475370495148032 machine-id:0 msb:0 sequence:0 service-id:0 time:113337158]
// NDc1MzcwNDk1MTQ4MDMy --> 475370495148032
// 9223372036854775807 map[id:9223372036854775807 machine-id:31 msb:0 sequence:4095 service-id:31 time:2199023255551]

License

The MIT License (MIT)

See LICENSE for details.

Reference

• Snowflake
• Sonyflake