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ddd-best-practices

DDD（领域驱动设计）架构最佳实践指南。当用户在 Java/Spring Boot 项目中遇到分层架构、领域建模、模块边界、代码评审或测试分层问题时使用。包括：纠结是否引入 application/api/querys 模块；设计或审查实体、聚合、仓储、防腐层、领域事件；贫血模型重构（setter 全开、规则全在 Service）；多入口共享用例是否补 application 层；策略模式 Map 注入、责任链、Node 流程编排的取舍；Controller 测试 @WebMvcTest vs @SpringBootTest 选型；MVC 渐进迁移 DDD；DDD 命名规范。仅适用 Java/Spring Boot 生态，Go/Python/Node 等其他语言不适用。

plugins/yyykf/spellbook-skills/skills/ddd-best-practices/SKILL.md

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# DDD Best Practices

## Overview

面向 Java / Spring Boot 项目的 DDD 落地指南，提供分层决策、领域建模、代码模板、测试策略、审查清单与重构路线图。

**Core principle:** 先判断复杂度与边界 -> 先收紧依赖与模型 -> 先补关键测试 -> 再按真实信号演进分层与模式。

**Announce at start:** "正在使用 ddd-best-practices skill 为你提供 DDD 架构指导。"

## Prerequisites

- 目标项目为 Java / Spring Boot 技术栈
- 非 Java 项目（Go / Python / Node）请勿使用本 skill