I remember days when I was the lead developer of a team working on developing an API to serve our ever-increasing set of Apps with many micro-services like content- and user-management, billing, analytics and the like. It took us almost three days to be able to learn and execute simple load tests with the GUI version. Scripting in ES6 JS: support for modules to aid code reusability across an organization 2. 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. The k6 API and CLI are easy-to-use, flexible and powerful.Write tests in Javascript that mimic real-world scenarios.Automate your tests to ensure that your infrastructure and application remain performant.Configure SLOs in your k6 script to test the health of your services.Create tests faster with our browser recorder and converters (JMeter, Postman, Swagger).Extensive documentation, awesome community and first class support.No XML. At that time, we used to use the latest best practices in software engineering in source control and CI/CD processes. 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. You are not alone in that. 1. For example, you expect your API or website to serve 10K users simultaneously, but when you put pressure on it, it quickly becomes evident that your calculations differs from the reality and the reverse proves to be the case. 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. After our investigations into Locust, Apache JMeter and the like, we decided to go with Apache JMeter, which was (and still is) the tool of the trade.
We were able to produce load test from one server and analyze the results. 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. 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. 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. k6 is a development-oriented, open source load testing tool for making load and performance testing scripts and testing web pages. Automation-friendly: checks (like asserts) and thresholds for easy and flexible CI configuration! 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.
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