Background processes will not be interrupted. When the request is called again, the requests will stop at locks, causing one to block the other.
What to do in case of a timeout?
Wait the "usual" amount of time, or contact our support team — we will check the process running in the cloud. We are planning to introduce "Jobs" support in the future, where the API will respond immediately and return a reference that can be used to check the status of the request, with the possibility of receiving a notification. At this point, however, this is part of our long-term roadmap.