DuckPond: Building a Self-Hosted Data Warehouse with DuckDB, FastAPI, and React
3 days ago
- #DuckDB
- #Data-Analytics
- #Self-Hosted
- DuckPond is a proof of concept for a self-hosted multi-tenant query layer using DuckDB, DuckLake, FastAPI, and React.
- It provides a lightweight alternative to traditional data warehouses for small teams or solo analysts.
- DuckDB serves as the analytical engine, operating on a single file database with no server required.
- DuckLake enables treating folders of Parquet files as tables, mimicking an external table system.
- FastAPI handles the HTTP layer, offering a clean interface for SQL queries via a POST endpoint.
- React and Vite power the frontend, providing a simple SQL editor and results display.
- The system supports multi-tenancy by opening new read-only connections for each query, avoiding write locks.
- DuckPond is not a production system but demonstrates DuckDB's potential as a free, self-hosted query layer.
- Use cases include local analytics sandboxes, internal query tools for small teams, and testing ideas without cloud warehouses.
- The project is open-source and available on GitHub, with a throughput of about 32 queries per second in tests.