Can HTTP PUT requests be considered safe for data modification?

HTTP PUT requests are considered idempotent, which means that executing the same request multiple times should not change the server's state after the first application.

However, idempotency does not guarantee that data will not change — it guarantees that repeated requests with the same data will not lead to additional changes.

For example, if a PUT request updates a resource with specific content, a subsequent request with the same content will not change the resource again. But if the data in the request differs, the resource will be changed.

Thus, PUT can be considered safe to repeat in the context of data changes if the requests are identical.