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六个思考维度：DDD + SpringBoot工程九层结构图解与实战

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By return userInfo, GamePerformanceVO gamePerformance, playerEntity Mapper.updateId, .sendPlayer Updatemessage
| CSDN
计算机领域有一句话：计算机中任何问题都可通过增加一个虚拟层解决。这句体现了分层思想重要性，分层思想同样适用于Java工程架构。 分层优点是每层只专注本层工作，可以类比设计模式单一职责原则，或者经济学比较优势原理，每层只做本层最擅长的事情。 分层缺点是层之间通信时，需要通过适配器，翻译成本层或者下层可以理解的信息，通信成本有所增加。 我认为工程分层需要从六个维度思考： (1) 单一 每层只处理一类事情，满足单一职责原则 (2) 降噪 信息在每一层进行传输，满足最小知识原则，只向下层传输必要信息 (3) 适配 每层都需要一个适配器，翻译信息为本层或者下层可以理解的信息 (4) 纵向 纵向做隔离，同一个领域内业务要在本领域内聚 (5) 横向 横向做编排，应用层聚合多个领域进行业务编排 (6) 数据 数据对象尽量纯净，尽量使用基本类型 1.2 九层结构 SpringBoot工程可以分成九层： 工具层：util 整合层：integration 基础层：infrastructure 领域层：domain 应用层：application 门面层：facade 客户端：client...
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