software architecture | Björn Wilmsmann

Reden wir über Digitales.

Ich bin selbständiger IT Berater und Unternehmer in der Internet und Software Branche. Ich beschäftige mich mit Design, Enterprise Applikationen, Web Apps und SaaS Produkten. Ich entwerfe und entwickle Business Lösungen und Anwendungen. Ich helfe Unternehmen in Sachen Software Qualität und Wissenstransfer, z.B. mit Angular und Spring Boot.

Major Migrations Made Easy by Tim Te Beek @ Spring I/O 2022

Leider ist der Eintrag nur auf English verfügbar.I'll write a more comprehensive review of Spring I/O 2022 in Barcelona soon. Until then, I'll post recordings of some of the talks I've found most intriguing during that conference. One of those talks was given by software engineer Tim te Beek on OpenRewrite - a tool for complex source code refactoring (e.g., framework migrations, vulnerability patches, and API migrations): Mostly focused on Java for the time being, OpenRewrite is a tremendously useful tool when it ...

10. Juli 2022 by Bjoern in Enterprise Software, Software

Christopher Alexander – Patterns in Architecture

Leider ist der Eintrag nur auf English verfügbar.Sadly, a few days ago, seminal architect and design theorist Christopher Alexander passed away. Having coined the term "pattern language" Christopher Alexander is considered the father of the pattern language movement. It is this term we as software engineers - oftentimes quite casually - refer to when we're talking about design patterns. In 1996, Christopher Alexander gave this compelling talk at the 1996 ACM Conference on Object-Oriented Programs, Systems, Languages and Applications (OOPSLA): In this talk, Alexander ...

27. März 2022 by Bjoern in Software

Inversion of Control vs Dependency Injection

Leider ist der Eintrag nur auf English verfügbar.Dependency injection is one way of implementing inversion of control - a programming principle that allows for better modularity and extensibility. Dependency injection is commonly achieved via constructor injection, field injection, or setter injection. Inversion of control is an abstract concept, which dependency injection is a realisation of. Other methods of implementing inversion of control for example include the template pattern, service discovery, delegates, events, and currying (when applying a functional programming paradigm).

17. Oktober 2021 by Bjoern in Software

Hexagonal Architectures: @Column(nullable = false) vs @NotNull in Java Applications

Leider ist der Eintrag nur auf English verfügbar.Recently, I came across a small and common, but all the more interesting, hands-on example of why a hexagonal architecture can help with making both the architecture and the code of an application more understandable, approachable, and maintainable. I won't be going into any details about the concept of and ideas behind hexagonal architecture here. The gist is summarised quite nicely in this quote from Tom Homberg's article on Hexagonal Architecture with Java and Spring: The ...

5. September 2021 by Bjoern in Enterprise Software, Software

Excalidraw: Shapes for UML & ER Diagrams

Leider ist der Eintrag nur auf English verfügbar.Excalidraw is a fairly new (having started in January 2020) virtual whiteboard software for creating diagrams with a hand-drawn aspect. I really like the aesthetics of diagrams created with Excalidraw. They have a natural feel and elegance to them. However, when recently revising some of the diagrams for Stratospheric – From Zero to Production with Spring Boot and AWS I found Excalidraw to be lacking shapes for UML & ER diagrams. I know, not everyone is ...

22. August 2021 by Bjoern in Enterprise Software, Software

A Catalogue of Design Patterns

Leider ist der Eintrag nur auf English verfügbar.Recently, I came across this well-structured as well as visually appealing catalogue of software design patterns on Refactoring.Guru. The subject of design patterns can be a somewhat dry, unwieldy one. Hence, using visuals and metaphors can come in handy when explaining both the general idea behind design patterns and specific patterns alongside with their use cases. Refactoring.Guru does a great job not only at explaining the origin and purpose of and rationale behind design patterns and ...

1. August 2021 by Bjoern in Enterprise Software, Software

Keeping a Record of Software Architecture Decisions

Leider ist der Eintrag nur auf English verfügbar.The need for asynchronous communication in organisations has become particularly obvious since 2020, when remote work and distributed work environments rapidly became the default setting for knowledge workers. Asynchronous communication essentially means that instead of exclusively communicating objectives, goals and the way by which to achieve them in-person (i.e. synchronously with everyone involved present at the same time - whether on-site or in a virtual space such as Slack or Zoom) we try and keep ...

6. Juni 2021 by Bjoern in Software

Björn Wilmsmann

my blog. for you.

Reden wir über Digitales.

Spring Cloud Gateway: Resilience, Security, and Observability by Thomas Vitale @ Spring I/O 2022

Collaboration When Developing Spring Boot Microservices by Dan Erez @ Spring I/O 2022