What will happen if the service does not return any response? How will this be displayed to the client?

From the client's perspective, this may manifest as:

• "Application or page hang." The interface stops responding, waiting for a reply.
• Timeout. The application or browser may display an error message indicating a connection timeout.
• Empty or incorrect response. In rare cases, the client may receive an incomplete or corrupted response that cannot be processed correctly.

For the service itself, the lack of response can be caused by many reasons:

• Server errors. Internal errors in the application logic, database failures, resource shortages (memory, CPU).
• Network issues. Disconnection between client and server, routing problems.
• Service failure. The service may have crashed or stopped.
• Overload. The service cannot handle the number of requests.

On the client side, this scenario should be handled by:

• Setting timeouts. Limiting the waiting time for a response.
• Displaying an informative message. Inform the user about the problem and suggest trying again.
• Retry mechanisms. Automatic attempt to resend the request after a short pause.