In my Vaadin projects, I usually use Karibu Testing for unit and/or Vaadins TestBench for end-to-end tests. Karibu Testing is an open source testing framework developed by Martin Vysny and TestBench the commercial UI testing framework based on Selenium.
Testing with TestBench/Selenium is often slow and flaky. I encountered non-reproducible problems when running the test. So I was looking for an alternative.

How to connect from an application running on Google Cloud App Engine to a PostgreSQL database running in Cloud SQL.

In my previous post, I was explaining how to deploy to Google Cloud. The final missing part was to deploy it automatically with GitHub actions.
The authentication will be done with Workload Identity Federation.

Today I tried to deploy a Vaadin application to Google Cloud App Engine
It was not as straightforward as expected so I want to share my findings.

In this post, I’ll explain how to use the web application framework Hilla to create a master-detail view with a Grid to display the data and a Form to edit the data.

When using a database the question is how to manage the versions of the schema and how to use the database in testing. Container technologies became a defacto standard. Why not use containers for development and your database?

Analyzing and visualizing the message flow between business functions was the goal of my current project. At first, we considered using a UML tool for this job, but we came to the conclusion that it might not be as flexible as we need it to be. Finally, I’ve got the assignment to create a custom web application.

Have you ever had to write an application that didn’t do much other than display and change data? And did you use a Single Page Application framework like Angular, a REST API, and Hibernate?

The new Java version 16 includes a new feature: Records

Today databases have a lot of functionality that is often not used by software developers because they simply do not know that this exists.
But knowing about these features can save a lot of time because you may write less code.