10 Reasons why Enterprises should modernize Applications

Posted on August 12, 2020 by Niklas Heidloff

While cloud technologies and modern programming models like cloud-native have been around for several years, most enterprise applications are still run on-premises and/or use classic stacks and application servers. Not all applications need to be, should be or can be modernized. However for many applications it makes a lot of sense. In this article I list my top 10 reasons why enterprise applications should be modernized. (more…)

Application Modernization Resources on IBM Developer

Posted on August 10, 2020 by Niklas Heidloff

In this short blog I list resources IBM provides around the topic 'Application Modernization' which is a topic that gets more and more important for companies as part of their journey to the cloud and their digital transformation strategy. (more…)

Modernizing Java Applications with IBM’s Transformation Advisor

Posted on July 28, 2020 by Niklas Heidloff

This article describes how to use IBM's Transformation Advisor tool which helps transforming Java EE applications that run, for example on WebSphere Liberty, into cloud-native applications and microservices. (more…)

Securing Vue.js Applications with Keycloak

Posted on July 23, 2020July 23, 2020 by Niklas Heidloff

I've built a new sample that leverages Keycloak to do authentication and authorization in Vue.js and Quarkus applications. This article describes how to authenticate users in Vue.js web applications. (more…)

Security in Quarkus Applications via Keycloak

Posted on July 22, 2020 by Niklas Heidloff

I've developed a sample that leverages Keycloak to do authentication and authorization in Quarkus applications. In this article I share my experiences and tips. (more…)

Setting up Keycloak in OpenShift

Posted on July 21, 2020 by Niklas Heidloff

I've built a new sample that leverages Keycloak to do authentication and authorization in Quarkus applications. This article describes how to set up Keycloak in OpenShift, for example Red Hat OpenShift on IBM Cloud. (more…)

Deploying CodeReady Workspaces on the IBM Cloud

Posted on May 12, 2020 by Niklas Heidloff

This short article describes how to deploy CodeReady Workspaces on OpenShift on IBM Cloud. The deployment is pretty straight forward with one exception which is explained below. Knowing this trick can save you some time and it makes the first time experience more enjoyable. (more…)

Workshops: Reactive Apps with Quarkus and OpenShift

Posted on May 11, 2020May 12, 2020 by Niklas Heidloff

In the context of cloud-native applications the topic 'reactive' becomes more and more important, since more efficient applications can be built and user experiences can be improved. If you want to learn more about reactive functionality in Java applications, read on and try out the sample application and the two new workshops. (more…)

Using the OpenJ9 JVM for Quarkus Applications

Posted on February 5, 2020 by Niklas Heidloff

As defined on the home page, Quarkus is "a Kubernetes Native Java stack tailored for OpenJDK HotSpot and GraalVM". Since I'm a big fan of OpenJ9, I've quickly measured memory usage of my reactive sample application where I run a microservice once with OpenJ9 and once with HotSpot. (more…)

Comparing synchronous and asynchronous Access to Postgres

Posted on February 3, 2020February 10, 2020 by Niklas Heidloff

Quarkus supports imperative as well as reactive programming styles. In this article I compare access times to Postgres from Java based microservices developed with Quarkus. For synchronous invocations Panache is used, for asynchronous access Vert.x Axle. (more…)