Clean Architecture - Are Microservices Truly Decoupled?

Principles

The principles of clean architecture emphasize creating maintainable and scalable systems. Joe Zack and Alan Underwood discuss the importance of following these principles to ensure code remains clean and adaptable. Joe highlights that while they covered most of the book's key points, some detailed sections were skipped, which delve into specific examples and edge cases 1. Alan underscores the value of the book in changing how one thinks about code, not just in writing it but in maintaining systems overall 1.

   

Boundaries

Maintaining clear boundaries in software architecture is crucial for system integrity. Joe explains that while breaking the dependency rule might sometimes be beneficial, it should be done cautiously to avoid tightly coupling services 2. Alan adds that misplacing core logic can mislead users and complicate system maintenance 3.

   

Abstraction

Abstraction layers play a vital role in decoupling software from hardware and operating systems. Joe and Alan discuss how hardware abstraction layers (HAL) and operating system abstraction layers (OSAL) help in creating flexible and testable systems 4 5. Joe uses the example of ATM software to illustrate the importance of abstracting hardware details to ensure software can be tested independently 4.