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I’m an independent IT consultant and entrepreneur in the Internet and software business. I’m interested in design, enterprise applications, web apps and SaaS products. I design and develop business solutions and applications. I help companies in terms of software quality and knowledge transfer, e.g. with Angular and Spring Boot.

A Simple Yet Powerful Tool: Decision Tables

Decision tables are a tool for specifying which actions to perform given a number of conditions. They represent business logic in terms of rules for connecting actions with required conditions for those actions. While they might appear deceptively simple and trivial they can be a tremendously powerful tool for defining business logic and certain types of software requirements. This article on Decision Table Patterns by Hillel Wayne describes the general concept as well as patterns, techniques, and best practices for using decision ... Read more

Cloudcraft – Cloud Architecture Diagrams and Visualisations

After recently having written about AWS cloud visualisation and management tools such as CloudMapper and Vantage I was made aware of yet another such tool by Sebastian Reuße: Cloudcraft allows you to not only visualise your AWS cloud architecture with beautiful as well as somewhat playful isometric infrastructure diagrams reminiscent of turn-based strategy games but also provides live connectivity with your actual AWS infrastructure and so-called "smart" components. Using these features you don't have to manually draw and recreate your existing infrastructure in ... Read more

Vantage – A Unified AWS Console

In last week's blog post I casually mentioned that out-of-the-box with AWS there's no single unified console providing you with an overview of your deployed infrastructure. Thankfully, there's Vantage - a centralized dashboard that provides you with such an overview and cost transparency across AWS regions and accounts through views, global search, and actionable insights. Up to $500 in monthly AWS spend Vantage is free. Beyond that there are Pro and Business plans at a monthly price of $50 and $250, respectively. Read more

CloudMapper: An AWS Visualisation Tool

CloudMapper is an AWS visualisation tool that's highly useful for getting an overview of your AWS infrastructure and network setup. Depending on the number of services, instances, VPCs, and subnets used, getting lost is quite easy, especially when considering that out-of-the-box with AWS there's no single unified console from which to get an overview of your deployed resources but rather a multitude of consoles, one for each AWS service. Therefore, keeping track of your infrastructure and keeping your costs in check can be ... Read more

Stratospheric – Three New Chapters!

Last week, we released the 3rd iteration of our eBook Stratospheric - From Zero to Production with Spring Boot and AWS. Roughly two months have passed since the last release in December 2020. We hope that we've made good use of this time by adding a few more chapters, as well as by improving and "refactoring" some of the already existing content. ​ The latest release contains these new chapters: Designing a Deployment Project with CDK: Building upon our First Steps with CDK we'll go ... Read more

Five Articles on Software Quality and Design Patterns

This week I'd like to point you to five articles I previously posted on this blog and from which I think that they're as relevant as they were at the time. The first three are about general software design principles, software architecture and software quality while the final two refer to specific best practices and common design patterns for Angular: Writing Disposable Code, Not Reusable Code (November 06, 2016) What Causes Over-engineering and How Can You Prevent It? (April 16, 2017) Less Is More ... Read more

Second Version of Stratospheric – From Zero to Production with Spring Boot and AWS

Two weeks ago, we released the second version of our eBook "Stratospheric - From Zero to Production with Spring Boot and AWS". This release contains these new chapters on IAM, local development, and automated deployments: ​ Managing Permissions with IAM - this chapter gives an overview of the concepts we can use with AWS in order to secure our resources and to authorize both individuals and applications to access them. Local Development Setup - this chapter explains how we can develop our cloud-based Todo application ... Read more

Using Maven Failsafe With Spring Boot

Maven Failsafe is a Maven plugin designed to be used in conjunction with the Maven Surefire Plugin. While the former plugin is intended for running integration tests the latter's purpose is to run unit tests. These plugins are tremendously useful for partitioning tests in Maven-based Java applications in order to make tests and builds run faster. When recently using Maven Failsafe with a Spring Boot application, though, I encountered a somewhat gnarly problem. Running mvn verify caused this error for all of the ... Read more

Mock Data Generators for Tabular Data

Developing a JavaScript-based web front-end, e.g. with frameworks such as Angular, at some point - especially during the prototype phase - often requires working with data supplied by a back-end data source. Tools such as JSON Server enable you to spin up such a data source as a REST API server in no time with zero coding involved. However, running a back-end server is only part of the equation that is testing a front-end against actual data. Another vital ingredient is the data ... Read more

Stratospheric – eBook Released Today

Today is the day! ​ We released the first version of our eBook "Stratospheric - From Zero to Production with Spring Boot and AWS". ​ This version contains the following chapters: The Sample Todo Application: The first chapter describes the "The Sample Todo Application" we created as an example for introducing various AWS features, techniques, and best practices. Getting Warm With AWS: After setting up to work with AWS, you'll deploy your first Spring Boot application. No previous AWS knowledge needed! An Overview of AWS Services: This chapter ... Read more
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