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.

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

Add a Manage Account link with Keycloak and RedHat-SSO

  In this blog, we will look at how you can easily empower users to manage their own account with Keycloak/RedHat-SSO by providing them with a direct link from within your Spring application. Basically, not much more is required than to add this link to your page or menu:

The address of the KC server is, off course, stored in … Lees verder Add a Manage Account link with Keycloak and RedHat-SSO

Security with microservices: programmatic security with Keycloak

In todays modern IT architecture, domains are quite the thing. Domains are supposed to be as much isolated from each other as possible. If you have an application that manages sensitive data (and really, when do you not have sensitive data?), you need to think about security. Programmatic security In many cases, you can get away with role-based security (e.g. … Lees verder Security with microservices: programmatic security with Keycloak

Programmatically adding users in Keycloak

Managing users in Keycloak can be done manually via the admin console (if you are running it locally, it can be found on http://localhost:8080/auth). If you have an LDAP service somewhere, you could also integrate that and manage the users via that. In this blog post, we’ll examine a simple way to manage users programmatically. We could use the Admin REST … Lees verder Programmatically adding users in Keycloak

Testing Keycloak integration with Arquillian

In a previous blog post we discussed a bit on how you can integrate Keycloak with JAX-RS. In this blog post we’ll show an example on how to build an integration test to test if your REST endpoint is secured. In this setup, we are using Keycloak 1.4.0 for our identity management, and we deploy our application in Wildfly 9. (Older versions … Lees verder Testing Keycloak integration with Arquillian

Managing multiple gears with Open Shift

In the previous blog post we learned how we could scale an application horizontally. If you run your application on multiple gears, life becomes a bit more complicated. If you are investigating a production problem, the first thing in general to look at is the applications log file. Since there is now more than one instance, there are multiple log … Lees verder Managing multiple gears with Open Shift

Horizontal Scaling with Open Shift

In the previous blog post we talked about vertical scaling with Open Shift. This blog posts investigates the next step: horizontal scaling. Horizontal scaling At some point we’ll run out of bigger sizes gear. And separating out chunks of an application to different gears doesn’t always help. To access a separated part of the application (e.g. the database), you most likely need … Lees verder Horizontal Scaling with Open Shift

Vertical Scaling with OpenShift

If you run your application on an OpenShift environment, one of the advantages you will have is that you can scale the environment quite easily. If traffic to your website continues to increase, at some point a single small gear simply won’t cut it anymore. In the next few blog posts I’ll explore the available options you have for scaling out and for upgrading your … Lees verder Vertical Scaling with OpenShift

OpenShift 3 beta

RedHat’s OpenShift 3 is coming somewhere this year and will be based on Docker and Kubernetes. See RedHat’s roadmap for the milestone planning. More and more details are coming out and for those interested in the main differences with the previous version, you could have a look at OpenShift 3 Beta Demo’s. For the impatient, here are some of the highlights: Gears and … Lees verder OpenShift 3 beta