Software architecture review, design patterns, and system design. Use when planning or reviewing architecture.
Scanned 9/12/2026
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---
name: arch
description: Software architecture review, design patterns, and system design. Use when planning or reviewing architecture.
---
## arch
Design and review software architecture.
### Common patterns
- Layered: presentation -> business -> data
- Hexagonal: core isolated from external
- Microservices: independent services
- Event-driven: communication via events
- CQRS: separate read/write
### Review checklist
- Separation of concerns
- Dependency direction
- Error boundaries
- Scalability
- Security
- Testing strategy
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