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Latest tutorials

Just: a tool to store and execute your project commands

“Just” (or “Justfile”) is a handy command-line tool that simplifies the execution of project-specific commands...

Mastering Virtual Threads: A Comprehensive Tutorial

Virtual threads, also known as project Loom, are a new feature available in Java 21...

How to upgrade to Quarkus 3

This article discusses how to upgrade your existing Quarkus 2.x applications to Quarkus 3.x using...

Addressing CVE-2023-4853 in Quarkus

The CVE-2023-4853 vulnerability in question impacts Quarkus framework’s HTTP Security Policy, . This policy provides...

How to set a custom initial value for Ids in JPA

In Java Persistence API (JPA), entities require unique identifiers for database records. JPA provides several...

Quarkus CRUD Example with Panache Data

In this tutorial we will learn how to create a REST CRUD application in Quarkus...

Tutorial: Using Debezium JDBC Connector

Debezium is an open-source CDC (Change Data Capture) platform that allows you to capture and...

Getting started with Debezium

Debezium is a project built upon Apache Kafka and uses Kafka to stream the changes...

How to create Jobs in Kubernetes

This article discusses how to automate Tasks in Kubernetes and OpenShift using Jobs and Cron...

How to analyze large Java Heap Dumps

One critical tool in diagnosing memory-related issues is the Heap dump, a snapshot of an...

PrimeFaces on Quarkus made simple

PrimeFaces is a renowned open-source UI component library for JSF-based web applications. It provides an...

PrimeFaces with Jakarta EE 10 made simple

In this article we will discuss how to create and deploy a Jakarta EE 10...

Cheatsheets

Quarkus 3 Cheatsheet (2023)

Quarkus is a popular Java framework designed to build lightweight, fast, and efficient applications. It...

JUnit 5 Cheatsheet (2023)

This article contains a JUnit 5 Cheatsheet which you can use as handy reference to...

Docker and Podman CheatSheet for DevOps

Docker and Podman are both tools that allow developers to package applications and their dependencies...

JBoss cheatsheet for Linux Administrators (2022)

This is my JBoss / WildFly cheatsheet I use for managing the application server on...

JBoss / WildFly XML descriptors reference

WildFly uses a set of custom XML descriptors which can be used to customize Enterprise...

REST Services Cheat sheet

Here is a comprehensive JAX-RS Cheatsheet to help you code your REST Services. JAX RS-Annotations...

REST Services cURL cheatsheet

Here is a cheatsheet that might be useful for REST developers that need a simple...

JBoss Datasource cheatsheet

Here is a cheatsheet with some examples of Datasources configurations which are valid for JBoss...