HTTP response codes are essential for understanding how your web application interacts with the server. This guide will help you navigate through the most common response codes and their meanings.
Common HTTP Response Codes
Here are some of the most commonly encountered HTTP response codes:
1xx Informational: These codes indicate that the request has been received and is being processed.
100 Continue: Request received, please continue.101 Switching Protocols: The server is switching protocols.
2xx Success: These codes indicate that the request was successfully received, understood, and accepted.
200 OK: Standard successful response.201 Created: The request has been fulfilled and resulted in a new resource being created.202 Accepted: The request has been accepted for processing, but the processing has not been completed.
3xx Redirection: These codes indicate that further action is required to complete the request.
301 Moved Permanently: The requested resource has been permanently moved to a new URL.302 Found: The requested resource has been temporarily moved to a new URL.304 Not Modified: If the client has already stored the requested resource, there is no need to retransmit the content.
4xx Client Error: These codes indicate that the request contains bad syntax or cannot be fulfilled.
400 Bad Request: The request could not be understood by the server.401 Unauthorized: Authentication is required and has failed or has not been provided.403 Forbidden: The request was a valid request, but the server is refusing to respond to it.
5xx Server Error: These codes indicate that the server is aware that it has erred.
500 Internal Server Error: A generic error message, given when an unexpected condition was encountered.503 Service Unavailable: The server is currently unable to handle the request due to a temporary overloading or maintenance of the server.
Useful Links
For more detailed information about HTTP response codes, please refer to our comprehensive guide on HTTP Status Codes.