What has not been declared dead already? Test Driven Development was buried years ago. Still, it continues to spread. Of course, Agile is dead as well. But even traditional companies come into contact with Scrum. The dead continue to live, but declaring something dead is always good for a snappy…


Clean Architecture is a term coined by Robert C. Martin. The main idea:
Entities and use cases are independent of frameworks, UI, the database, and external services.

A Clean Architecture style has a positive effect on maintainability:

  • We can test domain entities and use cases without a framework, UI, and…


Diagrams as code is a term used for storing the source of a diagram image as a text file. Examples include architecture diagrams, or diagrams showing a system’s behavior or design.

A generator tool like PlantUML then generates an image from the text. …


I’ve started a new side project. The goal is to drastically simplify the development of message-driven microservices.

Event sourcing is used as the standard persistence mechanism. In the future, I also plan to implement service integration using Kafka.

The project is called Being. It’s based on the Lagom framework.

Here’s the link to the Being project.

Please leave a comment what you think, or chat with me on Gitter.

I appreciate feedback.


Photo by Kaleidico on Unsplash

I just published a new side project of mine, for creating modular monoliths.

It’s very early stage. Not more than an outline. I’m curious what you think about it, please leave me a note in the comments.

Each module is contained in its own Gradle project. …


A few days ago, one of my students showed me his code. He had written an AWS lambda function that scrapes a web site and posts contents to Discord. He was unhappy because he couldn’t test the contents of the messages being posted. …


I just released version v2.0 of the requirements as code library.

Using it, you can create a single behavior that receives messages from the calling code. The behavior then dispatches the messages to an appropriate message handler. Which handler is appropriate is defined in a behavior model.

In the following…


Man walking on the moon

Jackson is a powerful library for processing JSON. It’s the default library used by the Spring Framework. It’s very flexible and configurable. The standard way of configuring it is using annotations in the classes to be processed.

In this post, I will explain how to use the Moonwlker library that…


Hi folks. I hope you’re doing good and staying healthy.

I just wanted to let you know that I did a major update of the GitHub frontpage of my long term side project, requirements as code.
My goal has been to improve the description of what the project is about, to clearly describe the proposed application design, and to give concrete code examples to try out.

You can find the project here.

I’d be glad if you check it out. Comments & questions are welcome.
If you want to have a direct conversation, don’t hesitate: bertil@requirementsascode.org
Thanks!


Got a bit of time on your hands, and you’re wondering how to use it effectively?

I explain the fundamentals of agile software development and Scrum. How it works and the pitfalls to avoid when getting started.

Watch my online video now on Skillshare:

Bertil Muth

Agile coach and developer. Follow me on Twitter: https://twitter.com/BertilMuth

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