javascript雪花算法ID生成库simple-flakeid

开源地址:https://github.com/zhupengfeivip/simple-flakeId

核心算法版权属于 yitter](https://github.com/yitter))
项目更多介绍参照:https://github.com/yitter/idgenerator
本项目是在此库优化而来,遵循开源原则,完全开源。

install

npm i simple-flakeid

function

function NextId()

根据输出数值判断,小于number最大值时输出number类型,大于时输出bigint

function NextNumber()

始终输出number类型,超过时throw error

function NextBigId()

始终输出bigint类型

js demo

const snowId = require('simple-flakeid')
let gen1 = new snowId.SnowflakeIdv1({ workerId: 1 })
for (let i = 0; i < 10; i++) {
    let id1 = gen1.NextId()
    console.log(`${i} ID:${id1} ${typeof id1} length:${id1.toString().length}`)
}

output:

$ node js/demo1.js 
0 ID:235100305752133 number length:15
1 ID:235100305772613 number length:15
2 ID:235100305776709 number length:15
3 ID:235100305776710 number length:15
4 ID:235100305776711 number length:15
5 ID:235100305776712 number length:15
6 ID:235100305776713 number length:15
7 ID:235100305780805 number length:15
8 ID:235100305780806 number length:15
9 ID:235100305780807 number length:15
const snowId = require('simple-flakeid')
let gen1 = new snowId.SnowflakeIdv1({ workerId: 1 })
for (let i = 0; i < 10; i++) {
    let id1 = gen1.NextBigId()
    console.log(`${i} ID:${id1} ${typeof id1} length:${id1.toString().length}`)
}

output:

$ node js/demo2.js
0 ID:235104756604997 bigint length:15
1 ID:235104756629573 bigint length:15
2 ID:235104756629574 bigint length:15
3 ID:235104756629575 bigint length:15
4 ID:235104756629576 bigint length:15
5 ID:235104756629577 bigint length:15
6 ID:235104756633669 bigint length:15
7 ID:235104756633670 bigint length:15
8 ID:235104756633671 bigint length:15
9 ID:235104756633672 bigint length:15

ts demo

import { SnowflakeIdv1 } from "../index"

let gen1 = new SnowflakeIdv1({ workerId: 1 })
for (let i = 0; i < 10; i++) {
    let id1 = gen1.NextId()
    console.log(`${i} ID:${id1} ${typeof id1} length:${id1.toString().length}`)
}

output:

$ ts-node ts/demo1.ts 
0 ID:235099434217541 number length:15
1 ID:235099434225733 number length:15
2 ID:235099434225734 number length:15
3 ID:235099434225735 number length:15
4 ID:235099434225736 number length:15
5 ID:235099434229829 number length:15
6 ID:235099434229830 number length:15
7 ID:235099434229831 number length:15
8 ID:235099434229832 number length:15
9 ID:235099434233925 number length:15

更多示例代码:https://github.com/zhupengfeivip/simple-flakeId-demo.git
包含在API中如何处理bigint的长度问题,请看示例代码

其他帮助

在mysql中int类型最大长度是10位数字,由于本算法默认生成的是15位,最短也是11位,所以在mysql中需要使用bigint数据类型

posted on 2021-10-31 10:51  一级码农VIP  阅读(1560)  评论(0编辑  收藏  举报