Recently I blogged about how to develop reactive REST APIs with Quarkus. Developing the actual endpoints asynchronously is the first step. To leverage reactive capabilities maximally though, the complete code path should be asynchronous, especially long lasting operations like database accesses and REST API invocations. This article describes two options how to invoke REST APIs asynchronously with Quarkus. (more…)

This article describes how to implement reactive REST APIs in Java with Quarkus rather than using synchronous endpoints. In order to do this, the Java classes CompletableFuture and CompletionStage are needed. The article explains how to use these classes and how to chain asynchronous method invocations including exception handling and timeouts. (more…)

Quarkus provides several different reactive messaging capabilities. The open source project cloud-native-starter uses some of these capabilities in a sample application which are described in this article. (more…)

The open source project cloud-native-starter describes how to develop reactive applications with Quarkus. One of the demonstrated functions is reactive access to PostgreSQL. This article describes options how to deploy Postgres to Kubernetes environments and how to configure Quarkus to access it. (more…)

This article describes how to develop microservices with Quarkus which use Apache Kafka running in a Kubernetes cluster. (more…)

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 code. (more…)

I had the pleasure to get interviewed in two airhacks.fm podcasts by Java guru Adam Bien. It was a lot of fun. (more…)

At code.talks in Hamburg I gave a talk about microservices, Eclipse MicroProfile and Kubernetes. (more…)

In the first part of this article I explain the amazing technologies Quarkus and Knative. In the second part I describe how to write simple microservices with Quarkus in Visual Studio Code in just a few minutes. In the last part I walk you through the steps how to deploy and run microservices as serverless applications on Kubernetes via Knative. (more…)

My colleagues Harald Uebele and Thomas Südbröcker and I've written two workshops for developers how to get started with Red Hat OpenShift on the IBM Cloud. (more…)