In the HTTP protocol, the status codes used to represent update and delete operations include the following:
Update Operations:
For update operations, the PUT or PATCH methods are typically used. The corresponding status codes include:
- 200 OK: The request was successful, and the server has updated the resource.
- 204 No Content: The request was successful, but no content is returned. This is commonly used for PUT requests where the update was successful and no updated resource content is required to be sent back to the client.
Example:
For example, if you are updating a user's information, you might send a PATCH request to the server. If the update is successful, the server may return the 204 No Content status code, indicating that the request has been processed successfully without returning any entity content.
Delete Operations:
For delete operations, the DELETE method is typically used. The corresponding status codes include:
- 200 OK: The request was successful, and the server has deleted the resource.
- 202 Accepted: The request has been accepted for processing but the processing is not yet complete. This is typically used for asynchronous delete operations.
- 204 No Content: The request was successful, and the server has deleted the resource, but no content is returned.
Example:
For example, if you are deleting a record from a database, you might send a DELETE request to the server. If the delete operation is executed immediately and successful, the server may return the 204 No Content status code, indicating that the resource has been successfully deleted and no content is needed to be returned.
Error Handling:
For the above operations, if an error occurs, the following error status codes may be returned:
- 400 Bad Request: The request is invalid or malformed, and the server cannot process it.
- 401 Unauthorized: The request lacks valid authentication information.
- 403 Forbidden: The server refuses to execute the request.
- 404 Not Found: The requested resource does not exist.
- 409 Conflict: The request conflicts with the server's current state, commonly used for version conflicts during update operations.
- 500 Internal Server Error: The server encountered an internal error and cannot complete the request.
Example:
If an invalid user ID is submitted during an update operation, the server may return the 404 Not Found status code, indicating that the specified resource cannot be found and thus the update operation cannot be performed.