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Web Accessibility with Vaadin

When you create a product, you naturally want as many people as possible to use it. However, some people have to be enabled to use it first, namely by making the product accessible and barrier-free. This also applies to websites and applications that are implemented as part of software development. UI designers, software architects, and software developers should be aware ...

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Difference between Mobile and Web App testing

In this fast-paced technological world, organizations have to maximize the visibility of their business to succeed. Since every business’s target audience is on the web and mobile devices, organizations must provide great software platforms for their consumers to interact on the web and mobile. A well-planned mobile and web application testing process is required to create flawless software apps. Businesses ...

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Oh TypeScript!!!

I’ve written before about the weirdness of TypeScript and instance functions of classes. To summarise. Let’s say we’re using map on an array of strings, and we therefore need to give it a function (item: string) => Something – and maybe we have a SomethingFactory which can use its internal state to make our things from the item: export default ...

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The 2022 FullStack Web Developer Bundle

Step Up Your Game as a Full Stack Developer & Deliver Finished Applications with 62 Hours of Content on How to Use Vue JS, Docker, Angular, React, and More Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering a massive 98% off on The 2022 FullStack Web Developer Bundle. Get it ...

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Top App Testing Techniques and Testing Scenarios for Web and Mobile

Introduction The technology industry is rapidly evolving, leading the development of new web and mobile applications daily. This implies an increase in the need for web and mobile application testing services. This is why app developers use a variety of app testing methods to evaluate both mobile and web applications to stay competitive in this fast-paced technological environment and keep ...

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Fixing the Spring Web error: Expected lookupPath in request attribute “org.springframework.web.util.UrlPathHelper.PATH”

The other day I was upgrading my Spring Boot app from 2.3.1 to 2.6.6 to address the recent Spring vulnerability. This upgraded the dependent Spring libraries from 5.2.7 to 5.3.18. At start-up my application dynamically adds some REST endpoints by adding new RequestMappingInfo objects to the RequestMappingHandlerMapping bean already registered in the application context: ApplicationContext ctx = event.getApplicationContext(); RequestMappingHandlerMapping requestMappingHandlerMapping ...

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Kubernetes Quick Debugging Pod

When working with Kubernetes, it is not rare to need to access a Kubernetes internal resource. While you can bridge a lot of things, you can also need to run an image from Kubernetes environment/network/…​ to reproduce an issue and connect faster (bridges can be slow if done until your computer, in particular over a VPN). To solve that the ...

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Portfolio Architecture Examples – Telco Collection

For a few years now we’ve been working on a project we have named Portfolio Architectures. These are based on selecting a specific use case we are seeing used in the real world by customers and then finding implementations of that case using three or more products from the Red Hat portfolio. Figure 1: The portfolio architecture process This basic premise ...

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Vaadin Community Award

A word of thanks I have recently been awarded the Vaadin Community Award for my talks and publications on the Vaadin framework, as well as my community support on Stack Overflow and the Vaadin Discord (don’t hesitate to drop me a line!), something which I am very grateful for. Being part of the Vaadin community has been, and is, a ...

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