[Web开发] 微软的RSS协议扩展 - FeedSync 介绍 (2)
下面通过一个例子来解释 FeedSync 协议。 该例子讲述当没有数据一致性冲突发生的的时候,FeedSync 如何工作。
这是一个简单基于RSS协议的XML, 描述我今天的任务列表。
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FeedSync 扩展在<item>下面加入了<sx:sync> 标签 以及 <sx:history> 标签
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假设我有2台电脑(台式机和笔记本), 在台式电脑A 上我增加了“Buy groceries” 以及“Get car serviced” 任务项; 过了一会儿,我又在笔记本电脑B 上我增加了“Return books to library”以及“Get birthday gift for mother” 任务项。 这时,台式电脑A上的的XML 文件变成了
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笔记本电脑B上的XML 文件就是
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当两个电脑都做数据同步之后,通过FeedSync协议,服务器上将会对两个XML进行合并,最终形成
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