F.Marchioni

Deploying Quarkus applications on OpenShift

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This tutorial explores how you can deploy Quarkus applications in containers and, more specifically, on OpenShift Paas Cloud platforms There are different approaches to deploy Quarkus applications on OpenShift. In this tutorial we will discuss them in detail. Start by checking out this example, which is an example of JAX-RS application which uses Hibernate ORM … Read more

Solving Could not reserve enough space for object heap

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Scenario: You are not able to start the Java Virtual Machine. The JVM exits and prints the error message “Could not reserve enough space for object heap” on the Console Facts: Upon start, the JVM prints the following error message: What is the solution? The Max Memory Setting of your JVM (-Xmx) is not compatible … Read more

Getting started with Java 18

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Java 18 is finally available for download! In this article we will learn some of the most interesting Enhancement Proposals (JEPs) which are now available in the JDK.

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How to configure a custom Undertow Thread Pool

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WildFly uses Undertow as Web server. In order to configure the amount of threads available in a Web application, we can define a Worker Thread from the io subsystem and use the Worker Thread for its HTTP listeners or just for single applications. In this tutorial we will learn how to do it.

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Quarkus migration tips (2022)

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Quarkus is one of the most innovative Java projects, therefore it’s not a surprise there are frequent updates to it. In this article we will have a look at the available guidelines to migrate Quarkus applications and tools that can help you to simplify your update strategy.

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