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Home · xiongwilee/Gracejs Wiki · GitHub
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xiongwilee edited this page Aug 14, 2016
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FYI: there just only Chinese documentation, you can jion us and translate it!
koa 是由 Express 原班人马打造的基于上下文(context)的Web server框架,如下图:

koa-grace 则是基于koa的实现的一套前后端分离MVC框架。
如上文提到,koa-grace是一个前后端分离MVC框架,组织结构如下图:
虽然MVC框架中的controller就是连接Model(数据模型)和View(视图)层的角色,但是在目前的业务中不推荐直接连接数据库,而是使用proxy的方式从服务层获取数据。
这样做的好处是,服务层完全由真正的后端(PHP/Java)托管,所有与用户(客户端)交互的应用层由Nodejs负责,两者之间通过HTTP的方式通信。这样做到了前后端完全解耦:后端负责输出JSON格式的数据,前端仅负责根据不同URI获取不同的数据,然后展现给用户。这也是典型的RESTful实现。
上述RESTful实现可以用下图呈现,这也是目前线上业务部署架构:
接下来你可以查看详细使用文档
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