--- set: 4 code: 404 title: Not Found references: "Rails HTTP Status Symbol": ":not_found" "Go HTTP Status Constant": "http.StatusNotFound" "Symfony HTTP Status Constant": "Response::HTTP_NOT_FOUND" "Python2 HTTP Status Constant": "httplib.NOT_FOUND" "Python3+ HTTP Status Constant": "http.client.NOT_FOUND" "Python3.5+ HTTP Status Constant": "http.HTTPStatus.NOT_FOUND" --- The origin server did not find a current representation for the target resource or is not willing to disclose that one exists. A 404 status code does not indicate whether this lack of representation is temporary or permanent; the [410 Gone](/410) status code is preferred over 404 if the origin server knows, presumably through some configurable means, that the condition is likely to be permanent. A 404 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls^[1](#ref-1). --- * ¹ Calculating Heuristic Freshness [RFC7234 Section 4.2.2][2] * Source: [RFC7231 6.5.4][1] [1]: [2]: