How does caching work after you resize? I built a similar thing 5 years ago and for what we were doing I think it was just a redis cache where the key was a hash of the source uri and the params for the operation and scaler.
Today I might try to hit the cache from nginx using lua -- and then only call the python thing on a miss.
Today I might try to hit the cache from nginx using lua -- and then only call the python thing on a miss.