How can you understand that applying asynchronous methods will improve system performance or efficiency?

Asynchronous methods improve system performance or efficiency when the program performs input/output (I/O) operations that take significant waiting time (e.g., network requests, file read/write, database queries). In such cases, instead of blocking the thread while waiting, asynchronous code allows continuing the execution of other tasks, efficiently utilizing resources.

You can recognize that asynchrony will help by the following signs:

• The code has many operations with delays for I/O.
• The application needs to handle a large number of concurrent requests.
• Performance is limited by the waiting time for external resources.

Example: if you have a Python web server that handles database requests, and each request blocks the thread until a response is received, switching to an asynchronous approach (for example, using asyncio and async database drivers) will allow serving more clients simultaneously without increasing the number of threads.