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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.

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

API-First Development with Spring Boot and Swagger at Reflectoring

When I recently had to look into some of the specifics of using Swagger and OpenAPI for designing an API specification and generating a Spring Boot application skeleton from that specification (using OpenAPI Generator) I came across this very useful and comprehensive article on the subject on the Reflectoring blog: API-First Development with Spring Boot and Swagger From creating an API specification with the Swagger editor to generating code (with the OpenAPI Generator Maven plugin, specifically) and implementing the generated interfaces the article ... Read more

A New Name for Our Upcoming Ebook: Stratospheric – From Zero to Production with Spring Boot and AWS

A few weeks ago I announced that together with fellow software developers and tech bloggers Tom Hombergs and Philip Riecks I have been working on a new project called AWS 101 for a few months now. To recap, the basic idea behind that project is to provide software developers and businesses with basic templates, recipes, building blocks, and overall best practices for developing, deploying, and running a Spring Boot application on Amazon Web Services (AWS). Since the "AWS 101" moniker was a bit ... Read more

Admiral Grace Hopper Explains the Nanosecond

Grace Hopper was a brilliant computer scientist, who - among numerous other achievements throughout her career in mathematics and computer science, the military, and the at the time nascent software business - can be credited with having had a pivotal role in the development of the business programming language COBOL (which quite deservedly got her the nickname Grandma COBOL and which in turn gave rise to enterprise software and the enterprise software industry) This is her visually explaining what a nanosecond ... Read more

AWS 101 – A Teaser: What to Expect and When

This past three months I have been working with fellow software developers and tech bloggers Tom Hombergs and Philip Riecks on a new project called AWS 101. So far and for the most part, we've been flying under the radar (the project is developed in the open though, see below) but the time has come to give you a little information about what to expect from this. The basic idea behind AWS 101 is to provide software developers and businesses with basic templates, ... Read more

Musings of a Greybeard on the State of Software Engineering

Two days ago software engineer and fellow blogger Tom Hombergs asked on Twitter if software development had grown harder over recent years, to which I replied: "Incoherent ramblings of a greybeard (without a beard, which is weird; these words rhyme, which is even weirder ...), who has seen at least 3 fat-client-thin-client cycles (the standard time unit in software architecture): As usual it depends. Just a few examples:" For the purpose of this blog post I just deemed it more sophisticated to call ... Read more

Repost from 16 June 2020: COVID-19 Tracing App for Germany

Repost from 16 June 2020: German COVID-19 tracing app available now. Read more
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