Architecture Patterns

Architecture Patterns

Master proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design to build maintainable, testable, and scalable systems.

Use this skill when

• Designing new backend systems from scratch
• Refactoring monolithic applications for better maintainability
• Establishing architecture standards for your team
• Migrating from tightly coupled to loosely coupled architectures
• Implementing domain-driven design principles
• Creating testable and mockable codebases
• Planning microservices decomposition

Do not use this skill when

• You only need small, localized refactors
• The system is primarily frontend with no backend architecture changes
• You need implementation details without architectural design

Instructions

1. Clarify domain boundaries, constraints, and scalability targets.
2. Select an architecture pattern that fits the domain complexity.
3. Define module boundaries, interfaces, and dependency rules.
4. Provide migration steps and validation checks.

Refer to resources/implementation-playbook.md for detailed patterns, checklists, and templates.

Resources

• resources/implementation-playbook.md for detailed patterns, checklists, and templates.

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