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Summary about response codes
1xx Informational response

1xx Informational response
2xx Success
3xx Redirection
4xx Client errors
5xx Server errors

More Detailed Data
Code
200 OKStandard response for successful HTTP requests.
301 Moved PermanentlyThis and all future requests should be directed to the given URI
404 Not FoundThe requested resource could not be found but may be available in the future. Subsequent requests by the client are permissible.
500 Internal Server ErrorA generic error message, given when an unexpected condition was encountered and no more specific message is suitable.