Asynchronous programming with async and await has existed in .NET for years. Now Microsoft is delivering a new runtime environment for asynchronous execution.

iPhone (Apple Health) → Export All Health Data (XML, 2-6 GB) → Streaming XML Parser (Node.js, constant memory) → PostgreSQL Raw Tables (3 tables, upsert-based) → SQL Views (12+ computed views) → Your ...

The utility must be run from your Cumulus MX root folder (the folder that holds your CumulusMX.exe file). It will read various parameters from your Cumulus.ini file, for example the MySQL server name, ...