dyna guid V2
A simple guid generator.
The chance to get the same guid is one in 18,446,744,073,709,600,000 on the same millisecond in the same timezone!
Samples
139aca66-2024bc60-2f847b9701be62a163 // Fixed length: 36
12f5ade5-54356610-2f847b9702f0b91635
216f48d8-233eb6b0-2f847b970379de20d6
Comparison with others
dyna guid v2: 1e955ef4-47939014-2f847b9700c03a2a3b
dyna guid v1: 1g6263bg-1h2c3a89-18046497750547120
.net guid: 30dd879c-ee2f-11db-8314-0800200c9a66
The difference is that dyna guid is
- hard to generate the same on the same millisecond per timezone and
- impossible to generate the same on next millisecond!
dyna guid syntax
<random block>-<random block>-<timestamp>
The default of the random blocks is 2, would be 1 or any other number.
Usage
import {guid} from "dyna-guid";
console.log('guid', guid());
console.log('even stronger guid', guid(3));
Method
function guid(randomBlocks: number = 2): string
Block is a set of 8 chars separated with dashes.
If you need even more complex guids (!why?) you can increase the number of blocks. Or for shorter set it to 1.
Change log
V1 05-Aug-2017
Sample: 1g6263bg-1h2c3a89-18046497750547120
V2 20-Jan-2022
Sample: 18ee7d36-14d00ef3-2f847b9703c45725c7
- Fixed size, doesn't change cause current date
- Better random blocks