Clean Code

Clean code is not about perfection; it's about maintainability. In large-scale projects, the cost of code is not in its writing, but in its reading and modification. A codebase that is 'clean' is one where a new developer can contribute within hours, not weeks.

Modularity is the cornerstone of clean architecture. By enforcing strict boundaries between layers (Domain, Infrastructure, Application), we reduce cognitive load and make testing straightforward. Dependency injection and the SOLID principles remain as relevant today as they were two decades ago.

Finally, documentation through tests is the most effective way to maintain clean code. A well-tested component is self-documenting and provides the safety net required for aggressive refactoring as requirements evolve.