HEAD响应比GET更快吗? [英] Is the HEAD response faster than the GET?

问题描述

我目前正在使用GET获取有关文件的信息，如果我使用HEAD请求重写它会更快吗?原因是我在第一个响应后关闭了连接.

I'm currently getting the info about the files with GET, will it be faster if I rewrite it using HEAD request? Cause I close the connection after the first response.

推荐答案

HEAD响应仅包含HTTP标头，但不包含正文-如果您不使用正文中的任何信息，通常仅使用HEAD会更快通常已经传递到GET响应中-如果没有任何开头，应该没有什么不同.

A HEAD response only includes the HTTP headers but no body - it is generally faster to just use a HEAD if you do not use any information in the body that would have normally transferred in a GET response - if there was no body to begin with it should not make a difference.

也来自此处:

HEAD方法与GET相同，不同之处在于服务器不得 返回响应中的消息正文.包含的元信息 HTTP标头中对HEAD请求的响应应该相同 响应于GET请求而发送的信息.这种方法可以 用于获取有关隐含实体的元信息 请求，而不转移实体本身.这个方法是 通常用于测试超文本链接的有效性，可访问性， 和最近的修改.

The HEAD method is identical to GET except that the server MUST NOT return a message-body in the response. The metainformation contained in the HTTP headers in response to a HEAD request SHOULD be identical to the information sent in response to a GET request. This method can be used for obtaining metainformation about the entity implied by the request without transferring the entity-body itself. This method is often used for testing hypertext links for validity, accessibility, and recent modification.

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