F.Marchioni

Getting started with MongoDB and Quarkus

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This tutorial covers the all the steps required for creating a REST application with MongoDB NoSQL Database and Quarkus. MongoDB is a document-oriented NoSQL database which became popular in the last decade. It can be used for high volume data storage as a replacement for relational databases. Instead of using tables and rows, MongoDB makes … Read more

JBoss / WildFly XML descriptors reference

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WildFly uses a set of custom XML descriptors which can be used to customize Enterprise applications. Today they are not used so widely as once, because they have been replaced by their equivalent annotations. Though it can be useful to have a reference to most common XML configuration file, if you prefer to maintain your … Read more

How to live reload your WildFly applications

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The next major release of WildFly Bootable JAR (3.0.0) is going to bring a super interesting feature. You can use a Maven goal to achieve live reload of your applications. Let’s check it out. In order to use the live reload feature, you have to use the version 3 of the WildFly Bootable Jar plugin: … Read more

How to add a Selector with MDB 3.0 ?

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Message selectors allow an MDB to be more selective about the messages it receives from a particular topic or queue. Message selectors use Message properties as criteria in conditional expressions. These conditional expressions use Boolean logic to declare which messages should be delivered to a client. With MDB 3.0 it’s easier to configure a selector … Read more

In the cloud computing – a beginner’s tutorial

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What is cloud computing? Cloud computing has become the new buzz word driven largely by marketing and service offerings from big corporate players like Google, IBM and Amazon. Cloud computing is the next stage in evolution of the Internet. Cloud computing provides the means through which everything from computing power to computing infrastructure, applications, business processes to personal collaboration can be delivered to you as a service wherever and whenever you need.

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How to use Human Tasks in jBPM

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A Human task, according to the (WS-HumanTask) Specification lets you model an activity that requires a human actor. When the process execution reaches at the user task node, a new task instance is created in the worklist of the actor(s) or group(s) defined for this task. Human tasks can transition to several different states and … Read more

How do I run garbage collector from shell?

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If you need to force the execution of Garbage Collection of a Java process from the command line the best option is to use the jcmd utility. The Java diagnostic command (JCMD) is another JDK tool (available in the bin folder of the JDK) that will trigger a garbage collection routine if the JVM can … Read more

Categories CLI

Building and deploying a Jakarta EE application on OpenShift

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This is the second article about building and deploying a Jakarta EE service in the Cloud. In the first tutorial, we have covered How to build and deploy a Jakarta EE application on Kubernetes Now we will show how to deploy the same application on OpenShift container application platform. How to install quickly an OpenShift … Read more