Blog:

Secure Web Applications with Vaadin and Spring Boot

Almost all web application frameworks include their security-relevant functions and provide the respective interfaces to external security solutions. As a Java-based full-stack framework, Vaadin is compatible with the most popular Java security solutions.

Almost all web application frameworks include their security-relevant functions and provide the respective interfaces to external security solutions. .....

03.10.2022

Vaadin Editable Grid

Vaadin has a fantastic Grid component that also can be made editable. But the configuration of the behavior, especially if you want to use the UI with the keyboard, can be complicated. In this blog post, I show you how this can be achieved.

Vaadin has a fantastic Grid component that also can be made editable. But the configuration of the behavior, especially if you want to use the UI with.....

23.09.2022

It doesn’t always have to be Angular or React

Single-page web applications have today practically become standard. Angular, React, and Vue.js are the best-known representatives in this category of web frameworks. But would this client architecture apply to every use case? Or are there alternatives that would better suit themselves and would be less time- and cost-consuming in development?

Single-page web applications have today practically become standard. Angular, React, and Vue.js are the best-known representatives in this category of.....

01.09.2022

Vaadin BeanValidationBinder with Custom Resource Bundle

The BeanValidationBinder from Vaadin uses the default message bundle ValidationMessages from Bean Validation for translations. But often one has already a resource bundle with translations for the Vaadin application. So how can we override this resource bundle?

The BeanValidationBinder from Vaadin uses the default message bundle ValidationMessages from Bean Validation for translations. But often one has .....

19.08.2022

The Real Value of Microservices

For several years, the microservices architecture has established itself as a quasi-standard and is deployed in many projects. That it is not a catch-all solution is well known. But how do microservices influence the lifecycle of an application, and which paradigms are important for other styles of architecture?

For several years, the microservices architecture has established itself as a quasi-standard and is deployed in many projects. That it is not a .....

04.08.2022

Running a Vaadin Application on Heroku

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud. I’ve used Heroku for some smaller projects in the past and, it was very easy to use. So why not try to run a Vaadin application on this platform.

Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud. I've used Heroku for .....

26.07.2022

UI Testing with Vaadin and Playwright

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.

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 .....

23.07.2022

Connect to Cloud SQL from App Engine

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

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

11.07.2022

Deploy to Google Cloud App Engine with GitHub Actions

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.

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 .....

08.07.2022

How to Deploy a Vaadin Application to Google Cloud App Engine

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.

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......

04.07.2022