the number of times QPS: finished processing requests per second; note that this is done. Specifically, it means that the request is sent to the server and the result is returned successfully. It is understandable that there is a counter, in server that adds 1 minute to 1 second after each request is processed, counter=QPS.

the number of transactions processed by TPS: per second. Generally speaking, TPS is for the whole system. How many transactions can be completed by an application system in 1s? in distributed processing, a transaction may correspond to multiple requests. QPS is more often used to measure the processing capacity of a single interface service.