HTTP
503 Service Unavailable
The server is temporarily unable to handle the request due to maintenance or overload. Should include a Retry-After header.
이 코드를 보게 되는 경우
During maintenance windows, server overload, or when the application pool is exhausted.
해결 방법
Wait and retry. Check the Retry-After header. Scale up servers if it's a capacity issue.
명세
RFC / 명세 보기 →관련 코드
크로스 프로토콜 동등 코드
비교
가이드
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