Explain mean of 404 not found HTTP response code

 The 404 error status code indicates that the requested resource could not be found on the server. This can occur for a variety of reasons, such as the resource being deleted or moved to a new location.

Here is the full process for handling a 404 error in a REST API:

1. The client sends a request to the server for a specific resource.
2. The server searches for the requested resource.
3. If the resource is found, the server sends a response to the client with the resource data and a status code of 200 (OK).
4. If the resource is not found, the server sends a response to the client with a status code of 404 (Not Found).
5. The client receives the response from the server and handles the error appropriately, based on the status code and any additional information provided in the response.

In a REST API, the server should return a 404 error in the following situations:

• The client requests a resource that does not exist.
• The client requests a resource that has been deleted.
• The client requests a resource that has been moved to a new location, and the server does not return a redirect to the new location.

It is important to handle 404 errors properly in a REST API, as they indicate that the client is requesting a resource that the server cannot provide. This can help the client understand why the request failed, and take appropriate action. For example, the client may need to update its cached data or display an error message to the user.