Nowadays, it has been improved very much and it integrates with CI/CD pipelines easily.Enough said! k6 is a modern open-source load testing tool providing an outstanding developer experience to test the performance of APIs and websites. 1. Scripting in ES6 JS: support for modules to aid code reusability across an organization 2. Let’s dive deep into what load testing is and how we can use k6 for doing load testing on our infrastructure. k6 Load Testing Tool. Then you should analyze the weak points in your design or setup to see how you can benefit from high load.There are many types of tests catered for different purposes in performance testing (Source: The most common purpose of performance testing is to find out how reliable, stable, performant and responsive the system is. I will try to write more about the cloud service in the future, too.Performance testing is a subset of performance engineering in computer science practice which deals with quality assurance of software by putting pressure and workload, either manually or automatically, on the software to see how it behaves and to make sure it is responsive and stable enough under that load. HTTP/1.1, HTTP/2 and WebSocket protocol support 5. You are not alone in that. Batteries i… After a while of testing and code-push, we have decided to go with an alpha-stage API that can answer our needs with a new App we used to develop.After a while of development, testing and improvement, we decided to test our API under load to see if it can hold up to the promises.
Just familiar scripting with ES6 JSCode-driven, JavaScript load tests that fit into our existing tool chain, clean APIs, command line so easy to automate and with a flag can run the same load test from the cloud in multiple locations. Since we have seen that after 200,000 users subscribing and 60,000 of them using one of our other Apps, there is an slow-down on the request/response flow to the other API, which roughly had the same setup.So, in order to not miss the opportunity of (load) testing before customers coming in, we decided to investigate ways to load test our API. We wanted something more developer-friendly, more integrable to our workflow, and easier to learn. It interprets tons of data generated by load tests relieving clients of a lot of work, which used to be the responsibility of performance engineers. It took us almost three days to be able to learn and execute simple load tests with the GUI version. Everything as code: test logic and configuration options are both in JS for version control friendliness 3. Metrics like throughput and response time is a good measure of such a system.k6 is a Free/Open-Source tool, written in Go, which can ingest tests written in JavaScript (ES5.1+) and turn them into requests to load test your website or API.The easiest possible way to use k6 is to install it on your machine using a You can then run your installed k6 command with the following script:Once you have saved this script somewhere accessible to k6, naming it It basically runs k6 on your machine using 10 virtual users over the course of 30 seconds, and it checks to see if the test URL returns The output of running this command would be as below.
I will try to write more advanced load testing articles to show you how to load test your website and/or API.This series will continue with more in-depth performance/load testing articles assuming the readers don’t have previous experience on this topic.As always, I do really appreciate your suggestions, comments and inputs on this. 4. No DSL. k6 is an open-source load testing tool and cloud service providing the best developer experience for API performance testing. There are various open source tools available, but k6 is quite easy to configure and use in you UI codebase. And I would like to thank Pepe Cano and Robin Gustafsson for their valuable comments and suggestions on this article and the series.A newsletter that delivers The Startup's most popular stories to your inbox once a month.Follow all the topics you care about, and we’ll deliver the best stories for you to your homepage and inbox. Automation-friendly: checks (like asserts) and thresholds for easy and flexible CI configuration! TLS features: client certificates, configurable SSL/TLS versions and ciphers 6.
I will try to write more advanced load testing articles to show you how to load test your website and/or API. It’s all about expectations. The results were good, because it gave us a bit more insight into what we should expect from our API, in terms of number of concurrent users and our API’s response time under load.But later we didn’t use the tool, since there was no clear way to integrate it into our CI/CD process at that time, and we didn’t have enough time to learn and use it. It is a feature-rich and easy to use CLI tool with test cases written in ES5.1 JavaScript and support for HTTP/1.1, HTTP/2, and WebSocket protocols. This was a very short introduction to performance/load testing and the k6 tool. k6 is a development-oriented, open source load testing tool for making load and performance testing scripts and testing web pages. At that time, we used to use the latest best practices in software engineering in source control and CI/CD processes.