​​ Recently AWS made the new ARM processors for Lambda functions generally available. With that change Serverless functions now use Graviton2, said to offer better performance at lower cost. I built a sample API on AWS using API Gateway and Lambda, and I wrote two endpoints, one CPU-intensive (calculating Pi using Leibniz's formula), the other a typical data transfer endpoint (returning an arbitrary number of bytes). Two very different endpoints for my experiment.

k6 Cloud, our managed testing solution, supports Prometheus to store and correlate performance testing metrics within your observability stack since a while now. Announced at Grafana ObservabilityCON, we launched Prometheus support to k6 Open Source - our free, open, and extensible load testing tool. k6 OSS supports sending k6 metrics to multiple outputs such as InfluxDB, New Relic, StatsD, and more.

We’re excited to launch xk6-browser at Grafana ObservabilityCON today, an extension to k6 adding support for browser automation via the Chrome Devtools Protocol (CDP). k6 was built because we weren’t satisfied with the developer experience offered by existing load testing solutions. We believe in shifting performance testing, and with it observability, to the left.

As you’re probably aware, C# is a modern, garbage collected language, which means you don’t have to take care of object disposal as you would in languages like C++. However, that doesn’t mean.NET engineers don’t face memory problems, such as memory leaks. In this post, we’ll walk you through the basics of memory leaks in.NET: what they are, how they occur, and why they matter.

When someone new joins the company, they're encouraged to do what is called a "Week of Testing" - taking k6 for a spin and presenting your findings to the rest of the team. This article will show you how you can make your test scripts more readable and maintainable. To do that, I'll test a demo application with a custom DSL. DSL is short for a Domain Specific Language, and in this case, it allowed me to write meaningful code specific to our business requirements.