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
作者:朱鹏飞 关注公众号(一级码农)回复“加群”,自动加入IT互联网技术微信交流群
个人博客:https://www.cnblogs.com/zhupengfei/
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