First8 staat voor vakmanschap. Al onze collega’s zijn een groot aanhanger van Open Source en in het bijzonder het Java-platform. Wij zijn gespecialiseerd in het pragmatisch ontwikkelen van bedrijfskritische Java toepassingen waarbij integratie van systemen, hoge eisen aan beveiliging en veel transacties een belangrijke rol spelen. Op deze pagina vind je onze blogs.

Testing with state using GraphWalker | Part 1 – Persistence

In this first installment of Testing with state using GraphWalker, we’ll look at integration testing the persistence layer of a Spring application. So, our tests will target the database and the data repositories. Statefulness The database itself is inherently stateful. As a result, if we connect a data repository to an actual database, it will also show stateful behavior. For … Lees verder Testing with state using GraphWalker | Part 1 – Persistence

How to solve a support case at Red Hat with success

In this blog post, I will walk you through the process up starting support cases at Red Hat. Including examples of what we did to solve our case. However, these blog posts might still help you when starting support cases at other companies. Our case One of the cases we have started is a case regarding a bug in JBoss … Lees verder How to solve a support case at Red Hat with success

The CDF is here! Why a continuous delivery foundation?

  March 12th 2019 a new vendor neutral foundation was created: the CDF! CDF is founded by Cloudbees and Google. For now the project has Jenkins (including the ‘jenkins-x’ project), Spinnaker (Netflix) and Tekton (kubernetes / google) on board and many companies as founding members. It was announced as definitive at FOSDEM in februari.   Some background on continuous delivery … Lees verder The CDF is here! Why a continuous delivery foundation?

Readers-writer lock using java 5’s condition variables

When I explained a piece of code to a colleague during a code review, I realized I had inadvertently implemented a readers-writer lock. So, I threw the code out, replacing it by the ReadWriteLock from java. This article is about that thrown out code. I updated the method names and comments to reflect the readers-writer lock as opposed to the … Lees verder Readers-writer lock using java 5’s condition variables

Functional Java by Example | Part 6 – Functions as Parameters

This is part 6 of the series called “Functional Java by Example”. The example I’m evolving in each part of the series is some kind of “feed handler” which processes documents. In previous part we tried to make our functions as pure possible by moving as much of the side-effects, such as IO, to the outside of the system. Now … Lees verder Functional Java by Example | Part 6 – Functions as Parameters