Vaadin Blog
Top 5 most common Vaadin performance pitfalls and how to avoid them
A couple of weeks ago I was coding a demo app when it dawned on me that if I was to use my code in a real-world application, it would consume unacceptable amounts of memory once it reached 100 or more concurrent users. Vaadin Flow makes it easy to start coding web applications, even if you have no ...
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Update your Vaadin 8 project to Java 11 and GWT 2.9.0
Vaadin 8 was originally built and designed when Java 8 was the newest and the coolest. You can see this in many parts of the API. For example, we use lambdas to implement listeners that only have one method, and use Optionals and Streams here and there. Vaadin 8 also uses GWT 2.8.2, which allows ...
Introduction to load testing with Apache JMeter
Load testing allows you to simulate multiple users interacting with your application. This allows you to experiment with a real-world load on your application and understand its behavior under different levels of stress. In this article, I'll show you, step by step, how to run load tests on a ...
UI Modernization with Vaadin
In this article, I share my experience in business application modernization and some of the key findings on migrating a complex Oracle Forms application to a modern Java-based web application implemented in Java with Vaadin. This article is based on my talk at DawsCon 2021: From low-code to ...
Top 25 Vaadin add-ons of 2020
The Vaadin Directory serves as a marketplace for add-ons and web components for your Vaadin applications. It’s a community-driven effort that includes integrations of other components, modifications to existing Vaadin components, or creations of additional features from scratch that are maintained ...
Performance testing a Vaadin application: Part 4 Gatling
Gatling is a free, open-source performance testing tool. It was first released 2012 and has since gained in popularity. In addition to its free tools, Gatling offers a wide range of (commercial) professional services. Gatling is mainly implemented with the Scala programming language (as opposed to ...
Submitting a PWA to Google Play Store using Bubblewrap
This tutorial shows how you build and submit your progressive web application (PWA) to the Google Play Store. We use the PWA from our Modern Web App tutorial series as an example and wrap it as a Trusted Web Activity (TWA) using the Bubblewrap CLI by Google Chrome Labs. You can find more details ...
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CGI automated routine tasks in social and health care
ITTE is a self-service solution for health and social care. The solution enhances and automates customer registration throughout the customer journey and provides information and guidance. The solution automates the routine tasks of professionals, allowing them to focus more on their core tasks. ...
Vaadin online training courses and certifications are now free
To end 2020 on a positive note, we are happy to announce a free gift for all Vaadin developers. We are unlocking all our online training courses and certification exams, and making them available for everybody for free. All registered users of our website can now access our previously-paid training ...
