Archive - CodeArtify Blog

Architecture Is an Escalation Path, Not a Starting Template

How I introduce structure only when it starts paying for itself

Jun 5 • Oliver Zihler

June 2025

Ports & Adapters-Style Architectures: Ditching the Dogma for Pragmatism

Avoid unmaintainable software due to Ports & Adapters-style architectures by separating the advantageous from the optional on a per-use-case basis.

Jun 13, 2025 • Oliver Zihler

EventStorming: A Smooth Start into the Workshop

Real-world tips for facilitating domain modeling and system design that get devs and business working together productively

Jun 6, 2025 • Oliver Zihler

April 2025

Legacy Code Modernisation: Speeding Up Approval Test Writing with CombinationsApproval

Manually writing Approval Tests can become cumbersome, especially if various input parameter combinations exist. Libraries like ApprovalTests can…

Apr 4, 2025 • Oliver Zihler

March 2025

Legacy Code Modernisation - Conserving Behaviour with Approval Tests

Transitioning legacy code to Hexagonal Architecture requires a strong test suite. Approval Tests are a powerful tool to achieve this.

Mar 28, 2025 • Oliver Zihler

From Hexagonal- to Clean Architecture

Introduction to Clean Architecture, comparison with Hexagonal Architecture, and incorporation of Domain-Driven-Design Domain Models.

Mar 21, 2025 • Oliver Zihler

Towards Hexagonal Architecture - Folder Structure

I present possible folder structures I used in own projects that capture concern separation, Hexagonal Architecture, and Domain-Driven Design…

Mar 14, 2025 • Oliver Zihler

Adding Domain-Driven Design to Ports & Adapters - Enriching the Domain Model with Logic

The current codebase, through enriched with stronger types, still is mostly procedural. Let's see how we can combine data and logic to build a much…

Mar 7, 2025 • Oliver Zihler

February 2025

Adding Domain-Driven Design to Ports and Adapters - Rich Domain Model vs. DTOs

In this article, I will discuss what types of data structures exist and which ones should contain business logic contributing to a rich domain model and…

Feb 28, 2025 • Oliver Zihler

Adding Domain-Driven Design to Ports & Adapters - Improving Port Interfaces

Currently, I mainly use primitive data types in port interfaces. Let's improve them by introducing parameter objects with concern- and domain-specific…

Feb 21, 2025 • Oliver Zihler

Towards Hexagonal Architecture - Interface Segregation

After examining driven ports for data-access separation and dependency inversion, I will take a closer look at interface segregation, ports on the…

Feb 4, 2025 • Oliver Zihler

January 2025

Towards Hexagonal Architecture - Dependency Inversion between Business- and Data-Access Concerns

To entirely remove any direct call from the business to the data-access concern, we need to introduce application-specific interfaces that are…

Jan 20, 2025 • Oliver Zihler