HTTP Response Codes

• 1xx: Informational: Request received, continuing process.
• 2xx: Success: The action was successfully received, understood, and accepted. 200 is the status code received most often.
• 3xx: Redirection: Further action must be taken to complete request.
• 4xx: User-Agent Error: The request contains bad syntax or cannot be fulfilled.
  • 401: You are not authorized to make this request.
  • 404: Cannot find the requested URL.
  • 405: The HTTP method is not supported by the URL.
• 5xx: Server Error: The server failed to fulfill an apparently valid request.
  • 500: Internal Server Error. Could see this if a Servlet throws an exception.
  • 503: Indicates that the HTTP server is temporarily overloaded, and unable to handle the request.