Vaadin 23 will require Java 11

We are changing our release model so the version numbers give a better indication of what type of changes the release contains. We are also putting more effort into helping with upgrading, so everybody can stay on the latest version instead of an old one. We have been listening to your concerns ...

Vaadin recently released Collaboration Engine, a new feature that allows you to easily create real-time multiuser apps. In this post, we take a look under the hood to see how it works. You can try a collaborative demo app here. While it's not immediately obvious when using the high-level ...

New stateless endpoints are one of the main features introduced in Vaadin 15. You can use them in client-side TypeScript views to connect to backend logic on the Java server. At first glance, this looks really similar to existing solutions, such as REST. There are indeed many similarities, but ...

Abstractions are important, but mismatched abstractions can be problematic. One particular mismatch that I encounter every now and then is a lot more than problematic: it can be outright dangerous. This is the mismatch between URL-based filtering in various security frameworks and view-based ...

We often get questions about how to use session replication together with Vaadin. Many of Vaadin's unique capabilities are based on the way the entire UI state is stored in a server-side user session. For this reason, our recommendation is to rely on session replication as little as possible. ...

Vaadin 10 is based on standalone Web Components for the client-side implementations of all components. Along with this comes a new distribution format: WebJars. Using WebJars is only recommended in cases where there is already a Bower package available. In particular, you should put your own ...

Vaadin 10 makes some changes to the way it loads static resources, such as application templates, custom styles and any additional JavaScript files. The gist of it is that such files should be put in src/main/webapp/frontend/ when building a .war file and ...

There has been some discussion about what the recently announced Vaadin 10 platform means in the context of GWT. I'll summarise some background about the direction we're taking here. I want to bring up two central themes: component models and freedom of choice. Component models UI development ...