Introducing Refactoring Principles
In the previous chapter, we reviewed the tactical patterns of DDD and equipped you with a robust toolkit to model complex systems effectively. As you now understand, tactical patterns are crucial for aligning your software architecture with the core business domain. However, as systems evolve, even well-designed code bases can accumulate technical debt and become harder to maintain. This is where refactoring comes into play.
Starting with this chapter, you will embark on the journey of mastering refactoring principles, a critical skill set for any software developer working within the DDD paradigm. Refactoring is not merely about making your code cleaner—it’s about making it more aligned with the underlying business needs, more maintainable, and more resilient to future changes.
The chapter is structured around three core themes:
- Understanding before acting
- The pillars of safe change
- Toward cleaner and...