Preserving maintainable code with high quality
Developers generally agree that code quality is a goal to strive for. Yet not all technology supports this ambition equally well.
As mentioned from the start, the business logic should be the main focus of applications. If changes in the business logic or new knowledge after working in the domain emerge, the domain model, as well as the source code, needs to be refactored. Iterative refactoring is a necessity to achieve and maintain high quality of the modeled domain as well as the source code in general. Domain-Driven Design describes this effort of deepening the understanding of the business knowledge.
A lot has been written on refactoring at the code level. After the business logic has initially been represented into the code and verified by tests, developers should spend some time and effort to rethink and improve the first attempt. This includes identifier names, methods, and classes. Especially, naming, layers of abstractions and single...
