HeaderCodes

HeaderCodes, also known as HTTP status codes, are three-digit numbers used in HTTP communication to indicate the outcome of a request made by a client (like a web browser) to a server. These codes are a standard part of the web and provide a way for servers to convey information about the processing of a request. They are categorized into five classes, each denoted by the first digit: 1xx (Informational), 2xx (Success), 3xx (Redirection), 4xx (Client Error), and 5xx (Server Error).

Informational codes (1xx) signify that the request has been received and understood, and the process is continuing. Success codes (2xx) indicate that the request was successfully received, understood, and accepted. Redirection codes (3xx) tell the client that further action needs to be taken to complete the request, often by redirecting to a different URL. Client error codes (4xx) mean that the client seems to have made an error, such as requesting a page that doesn't exist or providing invalid credentials. Server error codes (5xx) signify that the server failed to fulfill an apparently valid request, indicating a problem on the server's end.

Common examples include 200 OK, indicating a successful request; 404 Not Found, signaling that the requested resource could not be found; and 500 Internal Server Error, which points to a generic server-side problem. Understanding these codes is crucial for web developers and administrators to diagnose and resolve issues related to web application functionality and performance.