--- set: 4 code: 414 title: Request-URI Too Long references: "Rails HTTP Status Symbol": ":request_uri_too_long" "Go HTTP Status Constant": "http.StatusRequestURITooLong" "Symfony HTTP Status Constant": "Response::HTTP_REQUEST_URI_TOO_LONG" --- The server is refusing to service the request because the request-target^[1](#ref-1) is longer than the server is willing to interpret. This rare condition is only likely to occur when a client has improperly converted a POST request to a GET request with long query information, when the client has descended into a "black hole" of redirection (e.g., a redirected URI prefix that points to a suffix of itself) or when the server is under attack by a client attempting to exploit potential security holes. A 414 response is cacheable by default; i.e., unless otherwise indicated by the method definition or explicit cache controls ^[2](#ref-2). --- * ¹ Content Negotiation [RFC7230 Section 5.3][2] * ² Calculating Heuristic Freshness RFC7234 Section 4.2.2][3] * Source: [RFC7231 Section 6.5.12][1] [1]: [2]: [3]: