How to make the program on Python work in the background? [closed]

there is, which copes well with relatively small numbers, but when the numbers increase, the program eats up the whole Memory makes my processor painful.

I want to rewrite the program so that it stores objects in the database and perform actions on objects in the background. At the same time, I want to limit the resources consumed by the program so that it does not load the processor much and does not eat a lot of memory.