304 Not Modified client redirection response
code indicates that there is no need to retransmit the requested resources. It is an
implicit redirection to a cached resource. This happens when the request method is
safe, like a
GET or a
or when the request is conditional and uses a
If-None-Match or a
Many developer tools' network panels
of browsers create extraneous requests leading to
304 responses, so that
access to the local cache is visible to developers.
304 Not Modified
|RFC 7232, section 4.1: 304 Not Modified||Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests|
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- Browser behavior differs if this response erroneously includes a body on persistent connections See 204 No Content for more detail.