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Wilson Mar


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Code JavaScript to performance test locally and using their k6.io SaaS cloud

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NOTE: Content here are my personal opinions, and not intended to represent any employer (past or present). “PROTIP:” here highlight information I haven’t seen elsewhere on the internet because it is hard-won, little-know but significant facts based on my personal research and experience.

K6 (at k6.io) is the newest tool for performance testing. It uses JavaScript coding.

Install locally

Simplest Script


  1. File call-k6-url.js to invoke the k6.io test page:


    import http from 'k6/http';
    import { check } from 'k6';
    import http from 'k6/http';
    const res = http.get('https://test.k6.io');
    const checkRes = check(res, {
      'Homepage body size is 11026 bytes': (r) => r.body.length === 11026,
    export default function() {




https://k6.io/blog/running-distributed-tests-on-k8s/ Running distributed k6 tests on Kubernetes by Simon Aronsson, Olha Yevtushenko


  1. Run 10 virtual users (vus) for 5 seconds, each performing script.js:

    k6 run --vus 10 --duration 5s script.js


https://www.youtube.com/watch?v=gvounvDSDGg Basics of load testing with k6 and Grafana in 20 minutes k6

https://www.youtube.com/watch?v=tFsIgbqXbxM Intro to load testing with k6 and Grafana (k6 data source plugin and Prometheus Remote Write) k6

https://www.youtube.com/watch?v=ukoC319npUw&list=RDCMUCWPJwoVXJhv0-ucr3pUs1dA&start_radio=1&rv=ukoC319npUw How to Use k6 to Run Load Testing for a Website (for free)


https://www.youtube.com/watch?v=5OgQuVAR14I&list=RDLV5OgQuVAR14I&start_radio=1&rv=5OgQuVAR14I The Best Performance And Load Testing Tool? k6 By Grafana Labs DevOps Toolkit

https://www.youtube.com/watch?v=Hu1K2ZGJ_K4 Performance Testing your web app with k6 Chris James

https://www.youtube.com/watch?v=ZAq87eZ1w2U What is K6 & How to get started with k6 Is it Observable

https://www.youtube.com/watch?v=AEk-wgkIo4s Performance Testing with K6 Day 1 On 10th August. Call or whatsapp us on +91-8019952427 to enroll Performance Testing basics and advanced

Product comparisons

https://www.youtube.com/watch?v=KECr2BujqtM 15 Top Load Testing Tools Open Source MUST KNOW in 2021 Automation Testing with Joe Colantonio

https://www.youtube.com/watch?v=noZppBruOSY JMeter vs k6: Comparing two popular open-source load testing tools k6

https://www.youtube.com/watch?v=Be66Db4wHLA Postman for load testing using k6, with Tim Haselaars (k6 Office Hours #43) k6

https://www.youtube.com/watch?v=ZKYK5uyawfM Learn k6 Series - E2 - Recording in k6 using browser extensions QAInsights