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In this blog post I will give you an overview of how I built a no-code application that sends an email and a text message when a new users registers. This is part of me taking an application built with code and building it with no-code tools. I’m going to try this. Take a sample app or a tutorial built ...

Thread dumps are vital artifacts to troubleshoot/debug production problems. In the past we have discussed several effective thread dump troubleshooting patterns like: traffic jam, treadmill, RSI, all roads lead to rome ………. In this article we would like to introduce one more thread dump troubleshooting pattern. 1 2 How to capture thread dumps? There are 8 different options to capture ...

Lazy Loading When using grids, trees or any other of multi-valued component with Vaadin you often want to display data from a database table and typically you have more than a few rows in the database. In this case loading thousands or even millions of records don’t make sense and would be a huge performance problem. For this use case ...

You’ve got the duty interview. The hard part is over! Or is it? Here are four tips to assist you to make preparations for your web development interview. Interviewing as a web developer isn’t the same as other job interviews. Most coding-based interviews follow an analogous format that tests your knowledge. And these could also be a small amount more ...

In continuation of the last post, in this article, we will see the reactive streams specification and one of its implementation called Project Reactor. Reactive Streams specification has the following interfaces defined. Let us see the details of those interfaces. Publisher → A Publisher is a provider of a potentially unlimited number of sequenced elements, publishing them as requested by ...

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Some years ago I write a blog post about how to generate test reports in SonarQube separate in test report for unit tests and for integration tests. Since SonarQube 6.2 the test report isn’t separate in these categories any more (see SonarQube’s blog post). SonarQube merges all test reports to one test report with an overall coverage. So how to ...

MicroProfile GraphQL is now included in the just released version 1.5.0 of Quarkus. You can now use code.quarkus.io to get going with Quarkus and include the SmallRye GraphQL Extension. This will create a Quarkus starter application with the following dependencies: <dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-resteasy</artifactId> </dependency> <dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-junit5</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>io.rest-assured</groupId> <artifactId>rest-assured</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>io.quarkus</groupId> <artifactId>quarkus-smallrye-graphql</artifactId> </dependency> NOTE: At ...

In the agile and lean communities, we talk a lot about transparency. This image is the transparency principle we used in From Chaos to Distributed Agile Teams. I see the most product and program success when the various teams create transparency between them, the middle of the continuum. That’s the full-product transparency. I see many organizations succeed better when the ...