Blog Posts

Working Efficiently Within Different Directories in a Linux Shell

Introduction Suppose you need to perform work in multiple directories:

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Microservices

This Post is a summary of the famous Article about Microservices: https://martinfowler.com/articles/microservices.html

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The Concept of API Contracts - Finecloud

The Concept of API Contracts What is it about? We define an API contract as a formal agreement between a software provider and a consumer that abstractly communicates how to interact with each other. This contract defines how API providers and consumers interact, what data exchanges look like, and how to communicate success and failure cases.

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Spring Boot on Kubernetes

Enable Kubernetes in Docker Desktop We will use Docker Desktop to provide us a Test Kubernetes Environment.

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Building Spring Boot Docker Image

Pre-Requirements Developer Environment ready with Docker, JDK, IDE A Java Spring Boot Project with a h2 in-memory DB Docker Hub account Create Docker File Create a Dockerfile with the following content:

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Java Basics: Exceptions

What are Exceptions? An exception is an event, commonly it is a problem that arises during the execution of a program. When an Exception occurs the normal progris disrupted and the program/Application terminates abnormally, which is not recommended. Unexpected termination of an Application is never wanted and this is why exceptions should be handled, so that the Application lets the User know that some Error or Problem exists, but the Application itself should not just die without any information.

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Difference between heap and stack

In this Post I try to explain the difference between the heap and the stack. It’s just a very high level amateur explanation, there is a lot more to read and learn about this Topics.

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Backup OPNsense to Nextcloud

What is OPNsense? OPNsense® is an open source, easy-to-use and easy-to-build FreeBSD based firewall and routing platform.

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Threema Safe backup to Nextcloud

Did you know that Threema allows you to backup your Threema app to a custom Threema Safe server? You can, for example, use your Nextcloud to keep your Threema backups safe.

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