httpstatuses/contents/codes/503.md
2015-11-09 01:54:09 +00:00

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set code title references
5 503 Service Unavailable
Rails HTTP Status Symbol
:service_unavailable

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.

The server MAY send a Retry-After header field1 to suggest an appropriate amount of time for the client to wait before retrying the request.

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.