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Asynchronous API Performance Testing With JMeter

The principles behind performance testing API’s does not differ from the principles behind the performance testing of any application. Many API’s however are Asynchronous and a valid response from the API does not necessarily mean the transaction is complete which can cause a problem when measuring the performance of API’s. There are however ways around this and we will explore these in this post.

Cypress: The Web Testing Framework of the Moment

Cypress is one of the best web testing frameworks created so far. With more and more new web development frameworks on the market, it’s harder and harder to find an end to end testing or integration testing framework that would work well in any situation. In the recent years, we’ve seen a spike in web development frameworks, from Angular 1 or Angular 2, to the more popular React and VueJs, to new one like Svelte, and less popular like EmberJs and BackboneJs.

k6 as alternative to Azure load testing and Visual Studio load test

At the end of 2018, Microsoft stated that Visual Studio 2019 is the last version with load testing features. A few months later they formally announced that Azure load testing is closing down on March 31st, 2020. This announcement came as a bomb to the community. But for those who follow this market, the news was not a complete surprise.

How to automate Load Testing with k6 in TeamCity builds

In this tutorial, we will look into how to integrate performance testing with k6 in your TeamCity build setup. k6 is a free and open-source performance testing tool for testing the performance of APIs, microservices and websites. TeamCity is a continuous integration and delivery server built by JetBrains.

Documentation and Agile Performance Testing

Introduction Once upon a time documentation was one of the most important aspects of Quality Assurance and this was not limited to the functional test efforts but the non-functional testing as well. We spent days, weeks, months even creating Performance Test Strategies, Approaches, Plans, Test Case, Completion Reports etc. Most of these documents were required before any automation could be written and before a sensible performance testing framework could be considered.

Simple Way to Create Complex JMeter Scenarios

Introduction Creating complex performance testing scenarios in JMeter can be a complicated but necessary problem you will encounter as you build tests to mirror real user behaviour in your testing. There are many add-ins that can support you in the creation of these scenarios. Which is good if they do what you want them to do.

Load Testing Your API with Swagger/OpenAPI and k6

Throughout the years, there has been many attempts to devise a universal format for defining Web API specifications. The objective was (and still is) to help stakeholders of the system to work with those APIs, without having access to the source code. Each new "universal" format came with the promise of being ubiquitous and all-encompassing, but eventually faded away due to various reasons, like OData and WSDL.

Gatling: Simulation Scripts Parameterization

This blog post is a tutorial for writing Gatling scripts to load test web applications. It follows our first getting started with Gatling simulation scripts article. The application under test is a fake e-commerce. We are going to create a Virtual User that browses articles in this shop. To create a dynamic load test we will cover several topics.

How to generate a constant request rate in k6?

There are two different categories of tools in the load testing ecosystem. The first category is called non-scriptable tools and are usually used for load testing either a single endpoint or a set of endpoints. These tools usually generate load using a constant rate, which is measured in requests per unit of time, usually seconds. These non-scriptable tools don't apply any logic to the load testing process, other than the generation of load.