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27 lines
1.2 KiB
Markdown
27 lines
1.2 KiB
Markdown
---
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set: 5
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code: 503
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title: Service Unavailable
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references:
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"Rails HTTP Status Symbol": ":service_unavailable"
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"Go HTTP Status Constant": "http.StatusServiceUnavailable"
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"Symfony HTTP Status Constant": "Response::HTTP_SERVICE_UNAVAILABLE"
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"Python2 HTTP Status Constant": "httplib.SERVICE_UNAVAILABLE"
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"Python3+ HTTP Status Constant": "http.client.SERVICE_UNAVAILABLE"
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"Python3.5+ HTTP Status Constant": "http.HTTPStatus.SERVICE_UNAVAILABLE"
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---
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The server is currently unable to handle the request due to a temporary overload or scheduled maintenance, which will likely be alleviated after some delay.
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The server MAY send a Retry-After header field<sup>[1](#ref-1)</sup> to suggest an appropriate amount of time for the client to wait before retrying the request.
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Note: The existence of the 503 status code does not imply that a server has to use it when becoming overloaded. Some servers might simply refuse the connection.
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---
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* <span id="ref-1"><sup>1</sup> Retry-After [RFC7231 Section 7.1.3][2]</span>
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* Source: [RFC7231 Section 6.6.4][1]
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[1]: <http://tools.ietf.org/html/rfc7231#section-6.6.4>
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[2]: <http://tools.ietf.org/html/rfc7231#section-7.1.3>
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