• Timestamp 45bits
  • increases in units of about 100µs(microseconds).
  • can be stored for a total of 68 years.
• ParentsID 9bits
• SequenceNumber 10bits

[ Timestamp 0 ~ 2^45 - 1 ][ PID 0 ~ 2^9-1][ Num 0 ~ 2^10-1]

1. Add the epsilon package to your project dependencies (go.mod).

go get github.com/end-2/epsilon

2. Add import github.com/end-2/epsilon to your source code.

package main

import (
	"fmt"
	"log"
	"time"

	"github.com/end-2/epsilon"
)

func main() {
	// pid can be from 0 to 2^9-1
	pid := uint32(0)
	e, err := epsilon.New(time.Now(), pid)
	if err != nil {
		log.Fatal(err)
	}
	id, err := e.Next()
	if err != nil {
		fmt.Println(err)
    }
	fmt.Println(id)
}