You don't have to replace the core python parts. We moved a decent amount of our data pre-processing into Scala, Golang, and Data Base queries and then just sto

You don't have to replace the core python parts. We moved a decent amount of our data pre-processing into Scala, Golang, and Data Base queries and then just store the processed data for the python models to use to train/run (which ends up using the super efficient C/Fortran/Cuda code).