A craftsman’s guide to designing clean architecture

In this talk, Software Craftsman Marcus Biel describes how to design a Clean Architecture

Transcript

1. Marcus Biel, Software Craftsman Lightweight Java User Group Munich
 16. May 2018
 A craftsman’s guide to designing clean architecture
2. Copyright 2018 Marcus Biel https://cleancodeacademy.com About Me Clean Code Evangelist • Founder of Clean Code Academy • Public Speaker • Author • Java Influencer • JCP Member • Clean Code Coach • Java Consultant @MarcusBiel https://cleancodeacademy.com
3. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining a Clean Architecture
4. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining a Clean Architecture
5. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining a Clean Architecture
6. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining a Clean Architecture MODULES PACKAGES CLASSES METHODS
7. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining a Clean Architecture Domain Infrastructure HTTPS REST SOAP http://bit.ly/HexagonalArchitecture
8. Copyright 2018 Marcus Biel https://cleancodeacademy.com Building Blocks of a Clean Architecture ‣ Size ‣ Naming ‣ Encapsulation ‣ Coupling and Cohesion
9. Copyright 2018 Marcus Biel https://cleancodeacademy.com Size MODULES PACKAGES CLASSES METHODS
10. Copyright 2018 Marcus Biel https://cleancodeacademy.com Naming Clean names drive high cohesion 
 (Customer, AccountNumber) Use service pattern judiciously Clean names are team work Rename on new insights
11. Copyright 2018 Marcus Biel https://cleancodeacademy.com Encapsulation technically enforces of how the system should be used Getters and Setters violate encapsulation. Use package private more often! http://bit.ly/EvilGettersAndSetters
12. Copyright 2018 Marcus Biel https://cleancodeacademy.com Building Blocks of a Clean Architecture ‣ Size ‣ Naming ‣ Encapsulation ‣ Coupling and Cohesion
13. Copyright 2018 Marcus Biel https://cleancodeacademy.com Defining Coupling Tight Coupling Loose Coupling
14. Copyright 2018 Marcus Biel https://cleancodeacademy.com Coupling Strength ‣ Type of Coupling ‣ Timing of Coupling ‣ Distance of the Components
15. Copyright 2018 Marcus Biel https://cleancodeacademy.com Type of Coupling
16. Copyright 2018 Marcus Biel https://cleancodeacademy.com Distance of the Components MODULES PACKAGES CLASSES METHODS
17. Copyright 2018 Marcus Biel https://cleancodeacademy.com Distance of the Components
18. Copyright 2018 Marcus Biel https://cleancodeacademy.com Distance of the Components
19. Copyright 2018 Marcus Biel https://cleancodeacademy.com Distance of the Components
20. Copyright 2018 Marcus Biel https://cleancodeacademy.com Timing of Coupling
21. Copyright 2018 Marcus Biel https://cleancodeacademy.com Cohesion Low Cohesion High Cohesion
22. Copyright 2018 Marcus Biel https://cleancodeacademy.com Cohesion Low Cohesion High Cohesion
23. Copyright 2018 Marcus Biel https://cleancodeacademy.com Cohesion High Cohesion requires in-depth knowledge of the domain.
24. Copyright 2018 Marcus Biel https://cleancodeacademy.com What is Clean Architecture? I would advise students to pay more attention to the fundamental ideas rather than the latest technology. The technology will be out-of-date before they graduate. Fundamental ideas never get out of date. — David L. Parnas “ ”
25. Marcus Biel, Software Craftsman Lightweight Java User Group Munich
 16. May 2018
 A craftsman’s guide to designing clean architecture
26. Copyright 2018 Marcus Biel https://cleancodeacademy.com Slides https://bit.ly/GuideToCleanArchitecture