ithanshui / leaf

generate a unique id(Contains numbers and letters），You can specify the length.（go 唯一订单ID生成器，字母+数字组合）

中文版

leaf

This is a variant of Twitter snowflake. Generates a unique string of 10 length，contains letters and numbers,it can be used for 89 year. generates a unique string（Contains numbers and letters） of 10 length,Each node can generate 36 ids per millisecond.

Background

We often need a unique ID of ten lengths,Twitter snowflake is too long.

Feature

00000000-0-0...

It was divided into three groups：

1. timeStamp 36^8 = 2.821109907456e+12 millisecond > 89 * 365 * 24 *3600 * 1000 it can use 89 years.leaf

2. nodeId 0<= nodeId <=35

3. rate default 36 ids per millisecond. you can customize it.

Install

go get github.com/xingliuhua/leaf/v2

Usage

import "github.com/xingliuhua/leaf/v2"

	sinceOption := leaf.NodeSince(time.Date(2020, 0, 0, 0, 0, 0, 0, time.UTC).Unix())
	node, err := leaf.NewNode(leaf.NodeId(1), leaf.IdCountMaxPeMillisecond(50), sinceOption)
	if err != nil {
		fmt.Println(err)
		return
	}
	for i := 0; i < 100; i++ {
		fmt.Println(node.NextId())
	}

Maintainers

@xingliuhua.

Contributing

Feel free to dive in! [Open an issue] or submit PRs.