... 505 http Version Not Supported（不支持HTTP的版本）：服务器软件不支持客户机使用的HTTP的版本。 Last-Modified Date（最后修改日期）： Content-Length（内容长度）： ...
基于12个网页-相关网页
Page Last Modified Date 页面最新的修改时间
REST makes retrieving static documents incredibly efficient and scalable because they can be easily cached based on the URI and last-modified date.
REST使静态文档的检索极其高效、可伸缩，这是因为它们可以根据uri和最后修改日期来轻松缓存。
(an "entity" is another word a "component" : images, scripts, stylesheets, etc.) ETags were added to provide a mechanism for validating entities that is more flexible than the last-modified date.
增加ETag为实体的验证提供了一个比使用“last - modified date(上次编辑时间)”更加灵活的机制。
Both these techniques are illustrated in Listing 7, which restricts the result set to 10 entries, sorted in descending order by their last modified date.
这些技术都演示在清单7中，这里将结果限制为10个条目，按最后修改日期降序排列。
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