httpstatuses/contents/codes/503.md
2015-11-07 05:48:31 +00:00

812 B

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

The 503 Service Unavailable status code indicates that 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 field (RFC7231 Section 7.1.3) 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.

Source: RFC7231 Section 6.6.4