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Generating UUIDs

Scripting example on how to generate UUIDs in your load test.

Note that if you don't need v1 UUIDs, consider using the uuidv4 function from the k6 JS lib repository.

Generate v1 and v4 UUIDs

Universally unique identifiers are handy in many scenarios, as k6 doesn't have built-in support for UUIDs, we'll have to resort to using a Node.js library called uuid and Browserify (to make it work in k6).

For this to work, we first need to go through a few required steps:

  1. Make sure you have the necessary prerequisites installed: Node.js and Browserify

  2. Install the uuid library:

    $ npm install uuid@3.4.0
  3. Run it through browserify:

    $ browserify node_modules/uuid/index.js -s uuid > uuid.js
  4. Move the uuid.js file to the same folder as your script file. Now you can import it into your test script:

    import uuid from './uuid.js';

Here's an example generating a v1 and v4 UUID:

import uuid from './uuid.js';
export default function () {
// Generate a UUID v1
const uuid1 = uuid.v1();
// Generate a UUID v4
const uuid4 = uuid.v4();