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When and Why Should I Use the HTTP 304 Not Modified Status Code in a Spring Application?(我何时以及为什么应该在Spring应用程序中使用HTTP304未修改状态代码?)

转载 作者:bug小助手 更新时间:2023-10-25 11:17:44 25 4
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I'm currently working on a Spring application and I've come across the HTTP 304 Not Modified status code. While I understand its basic purpose, I'm struggling to grasp real-life scenarios where it would be particularly beneficial.

我目前正在开发一个Spring应用程序,我遇到了HTTP304未修改状态代码。虽然我理解它的基本目的,但我正在努力理解它在现实生活中会特别有益的场景。


Could someone please provide some concrete examples or use cases where using the 304 status code would be a good practice?

谁能提供一些具体的例子或用例,说明使用304状态代码将是一种良好的做法?


Additionally, I'd appreciate any insights on how this status code can enhance performance or efficiency in a web application.

此外,如果有任何关于此状态代码如何提高Web应用程序的性能或效率的见解,我将不胜感激。


Thank you for shedding light on this topic!

感谢您对这一主题的关注!


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Follow the specification.

请按照规范进行操作。



10.3.5 304 Not Modified


If the client has performed a conditional GET request and access is
allowed, but the document has not been modified, the server SHOULD

respond with this status code. The 304 response MUST NOT contain a

message-body, and thus is always terminated by the first empty line

after the header fields.



You might, for example, do a 'conditional GET' on a large document; there's no point in getting it again if you already have it and it hasn't been changed since. The efficiency of not transferring the document should be obvious; you need to trade that off against the work of maintaining a local copy.

例如,你可以对一个大文档做一个“条件GET”;如果你已经有了它,而且它从那以后没有被修改过,那么再次获取它就没有意义了。不传输文档的效率应该是显而易见的;您需要权衡维护本地副本的工作。


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Greatful for the clear explanation.

非常感谢你的清晰解释。

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