Hydra is the easiest way to build real-time apps and analytics with Postgres. Every project with Hydra uses pg_duckdb, an open source (MIT licensed) program that embeds DuckDB's state-of-the-art analytics engine and features within Postgres. We developed pg_duckdb, the official Postgres extension for DuckDB, in collaboration with the DuckDB Foundation. https://github.com/duckdb/pg_duckdb