Error 503--Service Unavailable From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1: 10.5.4 503 Service Unavailable The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. The implication is that this is a temporary condition which will be alleviated after some delay. If known, the length of the delay may be indicated in a Retry-After header. If no Retry-After is given, the client SHOULD handle the response as it would for a 500 response. Note: The existence of the 503 status code does not imply that a server must use it when becoming overloaded. Some servers may wish to simply refuse the connection.
이 질문에 대해 Stack Overflow에서 비슷한 토론을 찾았습니다: https://stackoverflow.com/questions/13909554/