multiprocessing vs. multithreading for flask webserver
How I understand that you only read data from shared resource. If that correct then you don't want to use Multithreading. Problem only getting start when you are reading & writing data on shared resource and then you have to use Multithreading or Multiprocessing or some other method.
https://www.youtube.com/watch?v=oIN488Ldg9krefer this video link to understand "Difference between Multiprocessing and Multithreading".