DevOps Infrastructure
HAProxy
The High Availability (HA)Proxy is an open-source very fast and reliable reverse proxy and load balancer. Over the years it has become a state of the art open-source product and is often deployed by default Read more…
General Infrastructure
Use DokuWiki with Synology DSM 7
The new Synology DSM 7 does not support DokuWiki by default.Right at the beginning of the upgrade to DSM 7, Synology alerts a problem with the third-party package DokuWiki is not compatible with the new Read more…
Automation Engineering General Infrastructure
Home Assistant Setup with Docker
In this post, I describe how to set up your own Home Assistant with hassio.Before getting started you have to find an appropriate Hardware Environment to deploy hassio. I would recommend adding a RaspberryPi 3 Read more…
Engineering
Angular – Dynamic Module Loading
This post describes how to implement lazy or dynamic module loading with angular, based on an Angular 10 demo implementation, and is an extension to the former post I created on lazy-loading components and services. In Read more…
Engineering
Angular – Dynamic Component and Service Loading
This post describes how to implement lazy or dynamic component loading with angular, based on an Angular 10 demo implementation. In Angular applications, it is sometimes necessary to load components or services dynamically/lazily and asynchronously Read more…
Engineering Microcontroller
Getting started with Microcontroller Programming – ESP8266
During the 3rd Corona Lockdown in Austria, I searched for a new private project and decided to test something new. So I tried myself in programming microcontrollers.This post shares my first impressions, experiences, and ready-to-use Read more…
DevOps Engineering
java.lang.OutOfMemoryError: Java heap space – Heap Dump Analysis
Recently I was informed about some java.lang.OutOfMemoryError: Java heap space issue found in one of our application logs. To share some insight on how I handled and localized the issue, this post summarizes some basics to discover possible memory leaks using Eclipse Memory Analyzer.
DevOps Infrastructure
Set up your own VPN
A Virtual Private Network (VPN) is used to extend an existing private network across the internet (public network). VPN enables connected devices all over the world to interact through an encrypted connection as if they Read more…
General
Synology – Import Photo Station Data into Moments
I recently bought a Synology DS218+ to manage data and especially photos. For this purpose, Synology offers different packages that can be installed within the Network Attached Storage to extend the feature set.To fulfill my Read more…
Engineering
Play with Docker (PWD) – An Amazing One-Click Docker Playground Project
Last week I found an amazing valuable in-browser Docker solution hacked by Marcos Nils and Jonathan Leibiusky and sponsored by Docker Inc. About PWD PWD is a Docker playground that allows launching and using Docker Containers Read more…
DevOps Infrastructure
Private DNS-Server in 3 Steps
There are several reasons to use a private DNS-Server within a network. This post is about how to set up a private DNS-Server based on Pi-hole and using Docker. Pi-hole is a very lightweight, scalable, robust, open-source software that provides a beautiful and responsive web interface to control the DNS-Server and view statistics.
Engineering Security
Dynamic OAuth Client Configuration using Spring Security
OAuth 2.0 is the industry-standard protocol for authorization or to be precise a specification for issuing access tokens defined in RFC 6749. It focuses on client developer simplicity while providing specific authorization flows for different kinds Read more…
DevOps Infrastructure
Building a Kubernetes Cluster within 15 minutes
In this blog post, I provide a basic guide on how to become a Kubernaut and set up your own Kubernetes Cluster. Kubernetes (K8s) … is Greek for helmsman or captain. And this is what Read more…
Engineering
A basic introduction into Jigsaw and the impact on Java-Application startup time as well as the footprint
Years ago monolithic software often seems widespread while in recent years developers have focused on structuring their application architecture into technical components to achieve maintainable self-contained software units. Since Java offered no direct support to Read more…
Security
Android Application Security Evaluation
In 2019 I received my Master’s degree from the Vienna University of Technology for my thesis on Efficient Automated Analysis of Android-Applications Related to IT-Security Based on Open-Source-Tools. To provide the ability of automated Android-Application security testing on different security fields, I implemented a web-based Testing as a Service (TaaS) Framework as part of my master thesis with the focus on...