Stockholm, Sweden
Sep 16, 2021   |  By Floor Drees
The summer break is over, we start to creep towards autumn, and we at k6 haven't been resting on our laurels. What happened since the k6 v0.33.0 release? So glad you asked! The below. And then some!
Sep 13, 2021   |  By Michael Wanyoike
You can find a collection of k6 scripts and build specification for CodeBuild in this tutorial here.
Sep 2, 2021   |  By Pawel Suwala
August 7, I joined the Office Hours our Developer Relations team runs on a weekly basis, to talk about how we work at k6. We are growing rapidly, and are a little unconventional in how we organize ourselves, so I thought it would be a good idea to share in more detail how we build and ship software, being a remote-only company.
Aug 30, 2021   |  By Michael Wanyoike
In this tutorial, we will look into how to integrate performance testing in your development process with Google Cloud Build and k6. k6 is an open-source load testing tool for testing the performance of APIs, microservices, and websites. Developers use k6 to test a system's performance under a particular load to catch performance regressions or errors.
Aug 23, 2021   |  By Simme Aronsson
At SLOConf 2021 I talked about how we may use error budgets to add pass/fail criterias to reliability tests we run as part of our CI pipelines. As Site Reliability Engineers, one of our primary goals is to reduce manual labor, or toil, to a minimum while at the same time keeping the systems we manage as reliable and available as possible. To be able to do this in a safe way, it's really important that we're able to easily inspect the state of the system.
Aug 20, 2021   |  By Tom Miseur
One of the more challenging aspects of load testing happens very early on: getting your scripts working. When you run your scripts, you may observe unexpected error status codes (typically in the 4xx-5xx status code range). Other times, you'll run your script and see it receive the expected responses (usually HTTP 200), yet the "thing" your script is meant to create simply doesn't show up anywhere, like on the database or as a record on the site. You start wondering: why on earth is that?
Aug 17, 2021   |  By Wai Foong Ng
Previously, I have covered an article on Load Testing SQL Databases with k6 . For your information, from k6 version 0.29.0 onwards, you can write a k6 Go extension and build your own k6 binaries. This comes in handy as you can use a single framework for load testing different protocols, such as ZMTQ, SQL, Avro, MLLP, etc. In this series of k6 extensions, let’s benchmark Redis now.
Jul 15, 2021   |  By Wai Foong Ng
This short tutorial shows how to run a k6 test for load testing a database. In performance testing, we often trigger load tests that simulate realistic user flows, particularly those that are most commonly seen in production. This type of acceptance testing usually interacts with various parts of our infrastructure: web servers, microservices, databases, etc. But what if you want to test the performance or scalability of an infrastructure resource in isolation?
Jul 2, 2021   |  By Simon Aronsson
It's once again the end of a release cycle for us here at k6, and this time we're happy to announce that k6 v0.33.0 is here! 🎉 The v0.33.0 release is a small one, mainly containing a bunch of minor bugfixes and enhancements, but is also laying the groundwork for some major new features like the upcoming k6/execution API in k6 v0.34.0. To read the full release notes, see the GitHub Release for v0.33.0.
Jun 29, 2021   |  By Robin Gustafsson
It's been a few weeks since Raj Dutt, Grafana Labs CEO and Co-Founder, announced the k6 acquisition during the closing session of GrafanaCONline 2021. You can learn more by reading our joint press release, or by watching the recording of the k6 Office Hours I joined the day after the announcement. With this blog I would like to share my excitement and my perspective. The acquisition marks a milestone for the k6 team, our customers, and the k6 community.
Sep 11, 2021   |  By k6
Grant Young, Software Engineer in Test at GitLab, talks to Nicole and Mihail from k6 about how GitLab uses k6 for internal load testing, and why they decided to include k6 in GitLab Premium so their users can run load tests easily, too. This episode of k6 Office Hours is pre-recorded-- Nicole had a presentation this week at TestCon Europe, so she needed some time to prepare and to watch other presentations.
Aug 28, 2021   |  By k6
In this episode of k6 Office Hours, Nicole is joined by Lee Barnes, founder and CTO of Utopia Solutions, to discuss how to do continuous performance testing and incorporate performance tests into CI/CD pipelines within DevOps or Agile frameworks. Performance testing should be done at every stage of the software development cycle.
Aug 21, 2021   |  By k6
In this episode of k6 Office Hours, Nicole is joined by Tom Miseur, a Technical Specialist at k6, to talk about tips and tricks for debugging a test script using k6 and other tools like Fiddler and DevTools.
Aug 14, 2021   |  By k6
How do you do microservices testing and improve the performance and reliability of complex modern architectures? What is Kubedim, and how can k6 load testing be used to verify outcomes for a microservices-based system? Nicole van der Hoeven (k6 Developer Advocate), Daniel González Lopes (k6 SRE), and Kelvin Zhang (incoming Google SWE) discuss Kelvin's master's thesis at the Imperial College London.
Aug 10, 2021   |  By k6
How do you monitor your application during k6 load testing? In this video, Nicole van der Hoeven learns how to install Grafana and Prometheus in her Kubernetes cluster (hosted in DigitalOcean), then runs a load test against her application with k6.
Aug 7, 2021   |  By k6
In this episode of k6 Office Hours, Nicole is joined by Pawel Suwala, CTO of k6, to give you a sneak peek of how we work at k6, and what we're working on next. We're going to talk about the methodology we use for creating k6, the different teams we have, and exciting new features that are coming soon!
Jul 24, 2021   |  By k6
In this episode of k6 Office Hours, Nicole and Simme are joined by Marcus Olsson, Developer Advocate at Grafana Labs, to talk about how to create plugins for open-source projects like k6 and Grafana.
Jul 19, 2021   |  By k6
So, Grafana Labs acquired k6. What do they do again? Nicole van der Hoeven goes through the landscape of Grafana Labs projects, explains what each one does, and how they could be useful for performance testing.
Jul 17, 2021   |  By k6
In this episode of k6 Office Hours, Nicole and Simme discuss how to run distributed load tests with k6 Operator, an open-source project that orchestrates k6 load testing scripts across any infrastructure you have available.
Jul 12, 2021   |  By k6
Nicole van der Hoeven shows how to add performance testing to a CI/CD pipeline from scratch and for free, using k6 to write a test script and GitHub Actions to automate it. She also talks about how to set it up using k6 Cloud and why the extra cost might be justified. OTHER CI/CD TOOLS

k6 is a developer-centric, free and open-source load testing tool built for making performance testing a productive and enjoyable experience. Using k6, you'll be able to catch performance regression and problems earlier, allowing you to build resilient systems and robust applications.

Quickly build test cases to validate the performance of your APIs or microservices. Validate that your system can handle the expected volume of traffic, and catch SLA/SLO-breaking performance regressions in CI before they reach production.

Built primarily for load testing, k6 tests can with advantage be reused for performance monitoring of your APIs and microservices in production.


  • Seamless scaling to the cloud: Designed to use the same test in a local, distributed or cloud environment. It provides an unified experience for various usage.
  • Built for automation: Designed for automating your performance tests. Get Pass/Fail behavior on your performance goals.
  • Write tests in Javascript code: Full scripting language to write realistic load tests. Reuse modules and Javascript libraries to build and maintain your test suite.
  • Multiple choices for storage: k6 can output test results to various backends and formats (Grafana, DataDog, Kafka, JSON).
  • Easy-to-use APIs and CLI: Designed for developers by developers. The k6 API and CLI is intuitive, flexible and powerful.
  • High-performance tool: The k6 engine is written in Go making to be one of the best performing load testing tools.

The best developer experience for load testing.