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28 lines
1.2 KiB
Markdown
28 lines
1.2 KiB
Markdown
---
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set: 4
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code: 404
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title: Not Found
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references:
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"Rails HTTP Status Symbol": ":not_found"
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"Go HTTP Status Constant": "http.StatusNotFound"
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"Symfony HTTP Status Constant": "Response::HTTP_NOT_FOUND"
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"Python2 HTTP Status Constant": "httplib.NOT_FOUND"
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"Python3+ HTTP Status Constant": "http.client.NOT_FOUND"
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"Python3.5+ HTTP Status Constant": "http.HTTPStatus.NOT_FOUND"
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---
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The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.
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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.
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A 404 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls<sup>[1](#ref-1)</sup>.
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---
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* <span id="ref-1"><sup>1</sup> Calculating Heuristic Freshness
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[RFC7234 Section 4.2.2][2]</span>
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* Source: [RFC7231 6.5.4][1]
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[1]: <http://tools.ietf.org/html/rfc7231#section-6.5.4>
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[2]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>
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