13 min read

Tutorial about using Ansible to setup your VPS server using Ubuntu

4 min read

Sending messages, e.g., AdaptiveCard, to a Microsoft Teams channel using workflows via webhook

18 min read

This tutorial depicts how to print documents, e.g., PDFs or Images, using IPP (Internet Printing Protocol) with Java/Kotlin

11 min read

Make use of the Google Cloud Pub/Sub (emulator) with Spring Boot and Quarkus

9 min read

Using Kotlin Coroutines to run tasks concurrently

4 min read

Switching both gcloud and kubectl config at once via command line

3 min read

Install and run FluxCD to configure a kubernetes cluster

4 min read

Using toml version catalogs in Gradle is a great way to manage dependencies and their versions.

3 min read

Tutorial for commonly used git commands

2 min read

Security - Tutorial about encrypting and decrypting files or archives using GPG.

3 min read

How to use Gradle plugins from a local Maven repository without publishing them to a remote repository or the Gradle plugin portal.

5 min read

This tutorial shows how to read text from images with OCR using Tess4J on Ubuntu

5 min read

Install Flutter and its depenedencies/pre-requisites on Ubuntu

3 min read

Giving access to a realm using service providers

9 min read

Creating a library using Gradle, register at Maven Central and publish it to Maven Central using GitHub Actions

4 min read

Terraform can apply env variables prefixed with TF_VAR_, so a bash script reading a .env file is helpful to provide sensitive data

3 min read

Modify requests of RestTemplate by adjusting the request, e.g., by the auth header and custom headers.

4 min read

Keeping Java dependencies up to date with Maven/Gradle and GitHub`s Dependabot

2 min read

CLI Tool to download youtube videos or audio

2 min read

Make use of @ConfigurationProperties or @Value in Spring Boot applications

5 min read

How do I setup my fresh Ubuntu installation for development

2 min read

Often configuration properties need to be in a certain shape in order to be used properly. So why not validate them upfront?

3 min read

Description on how to create C4 Model diagrams and tools to use it

2 min read

Tutorial about running Kubernetes locally using kind

4 min read

Setting up Keycloak v21 (based on Quarkus) with docker compose and connect it to postgres

10 min read

Tutorial on how to create a project for Gatling performance testing with Gradle and Kotlin

6 min read

Postman is a powerful tool to test rest apis manually. With Newman the CLI tool of postman this process of calling the rest api can be automated. To run such a job GitHub Actions can be utilized.

3 min read

Tutorial about running Kubernetes locally using Minikube

3 min read

Alternative shell for linux with enhanced features like command history and auto completion

3 min read

Export and import keycloak realm as json file including users and roles

2 min read

Using Kotlin extension functions/methods and create your own custom ones

4 min read

Tutorial on updating node and npm and package.json dependencies.

5 min read

Based on an OpenApi api specification the OpenApi generator can to used to create server stubs and web clients.

4 min read

Explains how to setup GitHub page with Gatsby and how to auto-deploy it using GitHub actions

2 min read

How to sync your fork on GitHub with the original repository

2 min read

Tutorial about tools for editing PDF files.

4 min read

Tutorial about Docker concerning containers and networking.