Make Your Own ORM - A Guide to When and How
summary
A bespoke ORM maps submission models to MySQL tables, uses tcomb type checking to drive serialization, and executes SQL with a simple connects query builder; custom serializers handle an encrypted string field and extract nested measurement payloads into columns. The system normalizes three initial measurement types but then absorbs a surprising three→four measurement types expansion by splitting measurements into separate tables, fetching them in parallel, and trading reimplementation cost for precise control and better performance.
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