At what stage can an error occur when executing a large number of asynchronous HTTP requests in Python?

An error when executing a large number of asynchronous HTTP requests in Python can occur at several stages, but most often — during sending requests or receiving responses, especially if the number of concurrent connections is not controlled.

For example, if too many parallel requests are used without restriction, you may encounter:

• Network or server overload (timeout errors, service unavailability).
• Exceeding limits on the number of open connections (socket errors).
• Errors in response processing if asynchronous logic is not properly organized.

To avoid such problems, semaphores are usually used or the number of concurrent tasks is limited, for example, with asyncio.Semaphore or libraries like aiohttp with connection restrictions.