Vaadin Blog
Vaadin opens an office in Berlin
We are proud to open a brand new office in Berlin, Germany to be closer to our German customers and users. The office's main focus is on consulting with the goal of serving our German users better both commercially as well as in local meetups and at events. "We will hire at least 10 developers and ...
Community Spotlight - August 2015
We skipped the July’s episode due to summer vacations, so there are a lot of community efforts in the buffer. Here is just a part of the cool stuff that has happened in the Vaadin community during the past months. We’ll get to add-on updates and other articles in the next episode. Wajdi Almir Ahmad ...
Jar packaged web apps with WildFly Swarm
“Make jar, not war” In the era of virtual servers and various cloud services, it has become common that a web server hosts only one web application. The overhead of having a separate execution environment for each web app, for both server room and maintenance people, has become so small that it ...
Use GWT widget as Polymer web component
So you got an existing GWT widget and you would like to publish it to a pure html/JS audience preferably as a Web Component. In this case you have a problem but hopefully this article will help you resolve that problem. Extra hacks necessary to get it working GWT 2.7.0: enable Js interop ...
Using DeltaSpike properties for more portable application binaries
I recently wrote an example application to create invoices. In it I used Google’s OAuth2 authentication, which naturally requires application specific API keys and secrets from Google that I cannot share publicly in the demo sources. As OAuth2 was just one thing I wanted to demonstrate, I wanted ...
Implementing sign-in with Google’s OAuth 2 services
Traditionally all public web apps have had their own authentication mechanisms, typically implemented with application specific username-password pairs. The approach is straightforward to set up for web developers, but also infamously difficult to do right (not at all or too weak hashing of ...
JCache, why and how?
Caching is needed in many different kinds of solutions to optimize the application in various ways. Discover what Jcache is and why you need it. Why, where and how could you use it? Caching libraries in the Java ecosystem is almost as common as mosquitoes in Northern Europe. Ehcache, Hazelcast, ...
How we improved the startup time in 7.5
When you are making your web applications for non-intranet usage (or for mobile users via VPN), you cannot emphasize the importance of compression too much. Google’s developer tools will blame you for missing compression and we have written several articles about this previously. Still, we have ...
Vaadin 7.5 - Grid Extensions
Vaadin 7.5 - Grid Extensions Vaadin 7.5 brought some new visible features for the Grid component, but there was also another big, not so visible, change. In Vaadin 7.5, there is now a new abstract base class AbstractGridExtension that contains helpers for Grid extensions. It contains functionality ...