architecture-patterns

1# Architecture Patterns
2 
3Master proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design to build maintainable, testable, and scalable systems.
4 
5## Use this skill when
6 
7- Designing new backend systems from scratch
8- Refactoring monolithic applications for better maintainability
9- Establishing architecture standards for your team
10- Migrating from tightly coupled to loosely coupled architectures
11- Implementing domain-driven design principles
12- Creating testable and mockable codebases
13- Planning microservices decomposition
14 
15## Do not use this skill when
16 
17- You only need small, localized refactors
18- The system is primarily frontend with no backend architecture changes
19- You need implementation details without architectural design
20 
21## Instructions
22 
231. Clarify domain boundaries, constraints, and scalability targets.
242. Select an architecture pattern that fits the domain complexity.
253. Define module boundaries, interfaces, and dependency rules.
264. Provide migration steps and validation checks.
27 
28Refer to `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.
29 
30## Resources
31 
32- `resources/implementation-playbook.md` for detailed patterns, checklists, and templates.