The specification pattern is a very powerful, elegant technique to encapsulate business rules as part of Domain Driven Design (DDD). Yet, this pattern might be among one of the most undervalued — or even unknown — design patterns. This article describes what the specification pattern is, how it can be…

“How do I measure the development team’s performance?”, “why can’t we predict the productivity of the development team?” or “the previous project went pretty fast, why does this project take so long?” are questions many CEOs ask. The answers are usually in the form of “it depends…” It depends, because…

Hexagonal architecture is an architectural pattern in software engineering where certain boundaries/interfaces are defined as edges of a hexagon. The pattern is also known as the ports and adapters pattern, which is more descriptive to the actual implementation. Hexagonal architecture is an implementation of a subset of the SOLID principles…