In this article we will learn how to deploy a Quarkus application on top of a Kubernetes cluster. We will start with a minimal REST application and then we will increase its complexity.
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How to send JMS messages across Java EE components
In this short tutorial we will give a tip about sending JMS messages between Java EE components such as Servlet/EJB and MDBs.
JBoss cheatsheet for Linux Administrators (2022)
This is my JBoss / WildFly cheatsheet I use for managing the application server on a Linux box. Enjoy it and welcome any contribution to the cheatsheet. WildFly / JBoss CLI How to execute commands in non-interactive way: jboss-cli.sh –connect –command=”:reload” How to connect to a non default host/port jboss-cli.sh –connect –controller=192.168.0.1:9990 How to execute … Read more
Getting started with ActiveMQ
ActiveMQ is a fully compliant JMS Provider released under the Apache 2.0 License which includes some easy use Enterprise Integration Patterns and many advanced features. In this tutorial we will learn how to install it and run a first example of it. Disambigution ActiveMQ vs Artemis MQ ActiveMQ: ActiveMQ is an open-source project that originated … Read more
Helloworld Fuse tutorial
In this tutorial we will move our first steps with Red Hat JBoss Fuse, we will learn what is JBoss Fuse, how to install it and we will run a first demo application on it. What is Red Hat Fuse ? In a nutshell Red Hat Fuse is an open source Enterprise Integration Platform and … Read more
How to configure a timeout for a SOAP Client
This article walks through the configuration of a JAX-WS Client timeout for applications running on WildFly or JBoss Enterprise application Platform
H2 Database cheatsheet
Here is a cheat sheet for H2 Database which shows some common Data definition, Data modification statements, JDBC Settings and H2 Database server administration. Firstly, if you are looking for an introduction to using H2 Database in your applications, then check this tutorial: H2 database tutorial DDL cheat sheet Table Creation (Basic) CREATE TABLE TEST(ID … Read more
Hibernate and JPA Named Query example
This article is a walkthrough the Hibernate and JPA Named Query interface and how you can use it to externalize common Hibernate and JPA specification lets you externalize query strings to the mapping Metadata, a technique that is called named queries. This allows you to store all queries related to a particular persistent class (or … Read more
How to solve JBAS014803: Duplicate resource
This quick tutorial discusses how to fix the error “Duplicate resource” which you can find at start up or upon deployment of a resource on WildFly.
Choosing the Strategy for Primary keys in JPA
In JPA terms, the @Id annotation indicates the identifier of the entity maps the primary key of a Database Table. In this article we will learn how to choose the optimal strategy for primary key generation.