Network spy protection with AdGuard Home on a Raspberry Pi & Docker

Network spy protection with AdGuard Home on a Raspberry Pi & Docker

Elmar Dott Jan 3, 2022 6 min read

In this short tutorial I describe how you are able to setup AdGuard Home on and Raspberry PI 4 with Ubuntu Server and Docker, to protect your personal network against spam and spyware. Continue reading →

The Bug Fix Bingo

The Bug Fix Bingo

Elmar Dott Dec 18, 2021 3 min read

Nobody wants to be the one. That’s nothing new. That’s why meetings aren’t exactly popular with test engineers. To avoid despair, we recommend BugFix Bingo. Continue reading →

jConf Peru 2021 [1]

jConf Peru 2021 [1]

Elmar Dott Nov 27, 2021 1 min read

Maven POM demystified: enhance your build Since more than a decade Apache Maven is one of the most convenient Build and Reporting tools for Java projects. The success of this tool is quit more than just being a build tool.…

Installing NextCloud with Docker on a Linux Server

Installing NextCloud with Docker on a Linux Server

Frank Vogt Nov 26, 2021 3 min read

On our first LiveStream we explain shortly what is Docker and how fast it can installed on an Ubuntu server. After this you get an overview about all the components we need for a full NextCloud installation. Step by step…

Learn to walk with Docker and PostgreSQL

Learn to walk with Docker and PostgreSQL

Elmar Dott Nov 16, 2021 4 min read

After some years the virtualization tool Docker proofed it’s importance for the software industry. Usually when you hear something about virtualization you may could think this is something for DevOps or administrators and will not effect me as a developer…

API 4 Future

API 4 Future

Elmar Dott Oct 1, 2021 13 min read

APIs, or interface descriptions, are especially important in RESTful services. To keep the project well-structured from the very beginning, allowing it to grow organically while remaining maintainable, a few simple rules should be followed. This article describes them. Continue reading…

Tooltime: SCM-Manager

Tooltime: SCM-Manager

Elmar Dott Sep 5, 2021 13 min read

This article introduces a new tool for the DevOps CI /CD pipeline. The SCM-Manager can host Git, Subversion, and Mercurial repositories in one solution. Continue reading →

{j}DD Poland 2021

{j}DD Poland 2021

Elmar Dott Jun 19, 2021 1 min read

Refactoring Disasters: A Story how I failed For my small Open Source project TP-CORE, you can find it on GitHub, I had the gorgeous Idea to replace the iText library for OpenPDF. After I made a plan how I could…

BarCamp República Dominicana 2021

BarCamp República Dominicana 2021

Elmar Dott Jun 19, 2021 1 min read

API4Future: A journey how to create a stable API By experience, enterprise applications have a long lifetime period. This is one oft the  reasons why we need to pay a lot of attention for maintenance. But how we are able…

jConf Peru 2021 [2]

jConf Peru 2021 [2]

Elmar Dott Jun 19, 2021 1 min read

Mission accomplished: deploy to Maven Central Many developers have ideas they work on it in their spare time. The most of us are convinced about open source and share their own projects on platforms like GitHub. But what happen after…

JConf Mexico 2020

JConf Mexico 2020

Elmar Dott Oct 3, 2020 1 min read

Continuous Stupidities – did DevOps fail? Heavy motivation to automate everything, even the automation itself, is the common understanding of the most DevOps teams. A strong dominance of administrators in those teams (Operations), transform ideas of increasing the development process…

Version Number Anti-Patterns

Version Number Anti-Patterns

Elmar Dott Apr 9, 2020 5 min read

After the gang of four (GOF) Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides published the book, Design Patterns: Elements of Reusable Object-Oriented Software, learning how to describe problems and solutions became popular in almost every field in software…

Non-Functional Requirements: Quality

Non-Functional Requirements: Quality

Elmar Dott Feb 2, 2020 12 min read

To meet the definition of code quality, it’s not enough to focus solely on the source code. Structure, organization, and maintenance also play an important role. Continue reading →

Acceptance Tests in Java With JGiven

Acceptance Tests in Java With JGiven

Elmar Dott Jan 1, 2020 11 min read

In a standard set-up for Java projects like NetBeans, Maven, and JUnit, it is not that difficult to produce your first test code. Besides, this approach is used in Test Driven Development (TDD) and exists in other technologies like Behavioral…

Docker Basics in less than 10 minutes

Docker Basics in less than 10 minutes

Elmar Dott Aug 30, 2019 1 min read

A short video introduction to Docker, a Linux-based container technology for virtualizing critical applications and infrastructure services. An essential tool for developers, DevOps, and system administrators. Continue reading →

The new Java Release Cycle

The new Java Release Cycle

Elmar Dott Jun 6, 2019 4 min read

When Oracle in 2017 introduced the new release cycle for Java I started to have a look for options. One of the options I can recommend is Java OpenJdk. Check in this post why I’m not agree with the new…

Apache License 2.0

Apache License 2.0

Elmar Dott Jan 3, 2004 9 min read

Apache LicenseVersion 2.0, January 2004http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. “License” shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. “Licensor” shall mean…