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

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

Controlling a Kibana dashboard with a custom form

At First8 we wanted to see if Kibana dashboards could be used to assist customer support. Currently our target customer support uses a number of a grep commands to analyse the logs, but they are not trained unix administrators and only work through a short list of commands. We were looking for a solution that would allow customer support to … Lees verder Controlling a Kibana dashboard with a custom form