V2EX 304

304

定义 Definition

304 通常表示一个数字“三百零四”;在计算机与网络语境中,HTTP 状态码 304(Not Modified,未修改)表示:资源自上次请求以来没有变化,浏览器/客户端可直接使用缓存版本。

发音 Pronunciation (IPA)

  • /θri hndrd nd fr/(three hundred and four)
  • /θri o fr/(three-oh-four,口语中读数字/代码时常见)

例句 Examples

The room number is 304.
房间号是304。

If the server returns 304, the browser will load the page from its cache instead of downloading it again.
如果服务器返回304,浏览器会从缓存加载页面,而不是再次下载。

词源 Etymology

304 本身是阿拉伯数字记法:由 3、0、4 组合表示“三百零四”。其中“0(零)”作为占位符的概念源于古代数学体系的发展,后经阿拉伯世界传播并在欧洲普及。作为 HTTP 304,则来自互联网工程任务组(IETF)对 HTTP 协议的标准化编号。

相关词 Related Words

文学/著名作品中的出现 Literary Works

  • RFC 9110: HTTP Semantics(IETF 标准文档,定义并规范了包括 304 在内的 HTTP 状态码语义)
  • RFC 7232: Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests(IETF 标准文档,详细说明与缓存验证相关的条件请求,常与 304 Not Modified 一起出现)
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