Skills

Provides comprehensive guidance for Domain-Driven Design (DDD) concepts, strategic design, tactical design, and architecture patterns. Includes DDD applicability assessment, Pattern Boundaries table (what each pattern is and is NOT), Complexity Ladder (when to adopt each level), Core Concepts quick reference with Entity/ValueObject/Aggregate patterns, full architecture landscape overview, anti-patterns with fixes, multi-language reference implementations, and complete primary source references. Use when the user asks about DDD basics, needs to understand DDD concepts, evaluates DDD applicability, or wants an introduction to domain-driven design.

Comprehensive guidance for Clean Architecture (整洁架构) — Robert C. Martin's Clean Architecture with Enterprise Business Rules, Use Cases, Interface Adapters, and Frameworks layers. Covers core entities, use case interactors, dependency rules, and full implementation steps with Java/Spring Boot examples. Use when user asks about Clean Architecture, 整洁架构, Robert Martin, Uncle Bob, use case driven architecture, or needs to implement DDD with clean architecture.

Comprehensive guidance for COLA v5 Architecture (菱形架构) — Alibaba's COLA framework with adapter/application/domain/infrastructure layers. Covers full project scaffolding, architecture validation (cola-creator + cola-validator combined), dependency rule checking with ArchUnit, CQRS integration, and multi-module Maven/Gradle project generation. Use when user asks about COLA architecture, 菱形架构, cola-creator, cola-validator, 创建 COLA 项目, or needs Alibaba DDD framework.

Lists all Stitch projects accessible to the user.

DDD architecture documentation generation — C4 model diagrams (Context/Container/Component/Code), ADR (Architecture Decision Records), domain model documentation, API documentation, architecture decision log, and team communication templates. Use when user asks about architecture documentation, 架构文档, ADR, C4 diagram, domain model doc, 架构决策记录, or needs to document DDD architecture for team.

DDD architecture evaluation and evolution — DDD maturity 5-level model (AdHoc/Aware/Applied/Scaled/Optimized), architecture fitness assessment (business alignment/team fit/tech fit/evolution capability), technical debt quantification with scoring, architecture evolution roadmap (4 phases), and migration risk assessment. Use when user asks about architecture evaluation, 架构评估, DDD maturity, 技术债务, architecture evolution, 架构演进, or needs to assess DDD implementation health.

Comprehensive guidance for Hexagonal Architecture (Ports & Adapters) — Alistair Cockburn's hexagonal architecture with domain core, port definitions, adapter implementations, and full Java/Spring Boot implementation steps. Covers primary/driving adapters, secondary/driven adapters, use case ports, repository ports, and dependency injection configuration. Use when user asks about hexagonal architecture, 六边形架构, ports and adapters, 端口适配器, Alistair Cockburn, or needs DDD with clean separation.

Comprehensive guidance for DDD Layered Architecture (DDD 四层架构) — Traditional 3-layer to DDD 4-layer transformation with Interface/Application/Domain/Infrastructure layers. Covers complete directory structure, dependency inversion, ArchUnit validation, Spring Boot integration, and step-by-step migration guide. Use when user asks about layered architecture, DDD four-layer, 分层架构, traditional layering with DDD, or needs a simple DDD entry point for small to medium teams.

Comprehensive guidance for Onion Architecture (洋葱架构) — Jeffrey Palermo's onion architecture with domain-centric layered isolation, dependency inversion from outer to inner rings. Covers domain core, application interfaces, infrastructure implementation, and API adapters with full Java/Spring Boot examples. Use when user asks about onion architecture, 洋葱架构, Jeffrey Palermo, concentric architecture, or needs layered domain isolation.

Architecture selection decision guide — help users choose from 5 DDD architectures (Layered/Onion/Hexagonal/Clean/COLA) with decision matrix, team size mapping, domain classification (core/generic/supporting), microservice splitting recommendation, and CQRS level suggestion. Use when user asks about architecture selection, 架构选型, COLA vs 六边形, cleaner architecture vs onion, 微服务拆分, or which architecture to use.

DDD code review and anti-pattern detection — anemia model detection, layered compliance checking, aggregate design review, rich model verification, scoring system (5 dimensions), and ArchUnit automated validation. Use when user asks about code review, 代码审查, DDD review, 架构审查, anti-pattern detection, 反模式检测, or needs to check if code follows DDD.

Comprehensive guidance for CQRS Architecture — independent CQRS skill covering L1/L2/L3 implementation levels, Event Sourcing, idempotency design, domain event lifecycle, and architecture-specific CQRS integration patterns for Layered/Onion/Hexagonal/Clean/COLA. Use when user asks about CQRS, 读写分离, Event Sourcing, 事件溯源, Command Bus, Query Model, or domain events.