The workshop looks expensive. Ambiguity is worse.
Having worked in different sectors of the industry over more than 30 years, I have seen the same picture again and again. This is not about one company. It is…
How Far Can You Actually Get with Just PostgreSQL?
You know that moment very early on in a project? You are building a system with complex business rules and long-lived data, maybe a subscription platform or a contract management…
From Business Activity to System Truth: Why the State Change Pattern Matters
In EventModeling, there is one pattern where everything really comes together. The State Change Pattern. At first glance, it sounds almost trivial: An actor performs an activity that changes something…
From Model to Code: Implementing Separation of Duties Without the Pain
In my last post I argued that Separation of Duties gets treated as a security problem when it’s really a modelling problem. The more I work with this, the more…
Separation of Duties Is a Modelling Problem, Not a Security Problem
Separation of duties (SoD) is usually treated as a security requirement. So we reach for the usual tools: RBAC, approval workflows, permission matrices, four-eyes principles, admin restrictions, audit logs, exceptions,…
Testing from the Model: Generating Test Cases Directly from Your Event Diagram
The clinical research team had spent weeks on the Event Model. The patient eligibility flow sprawled across multiple swimlanes—Clinical Research Coordinators entering data, an automated assessment engine, and Principal Investigators…
How We Test Just Became the Specification
Imagine a team six months into an #EventModeling engagement. They’ve shipped two slices. Business stakeholders are happy. Developers are moving faster than before. But at the sprint review, an architect…
Better Testing Starts with Better Design
I recently attended Swiss Testing Day, and it was a truly worthwhile experience. It was a very well organized conference, with a great atmosphere, a strong sense of community, and…
From Architecture to Runtime
Over the last months, I have written a lot about architecture before implementation. About the need for a shared language and a real blueprint. About reducing business processes to a…
Lessons Learned While Writing the 4th Edition of The Ultimate Docker Container Book
Now that the manuscript of the 4th edition of The Ultimate Docker Container Book is finally complete and heading toward publication, I had a moment to reflect on the journey.…