> magine that each Python module runs as a microservice. For many modules this would lead to huge performance degradation, for example a regexp module can be ca

> magine that each Python module runs as a microservice. For many modules this would lead to huge performance degradation, for example a regexp module can be called thousands times per second, the running time of a call is usually short and replacing an in-process call with a network call will give 100-1000x slowdown. This is absolutely irrelevant. If your call budget is 400ms then extra 4ms that it takes fetching a data from a micro service is negligible. Make 400ms 4ms and you are done.