LanceDB Why LanceDB LanceDB is an embedded vector database (like SQLite for vectors): - Single-file columnar Lance format on disk or S3/GCS. - Arrow native — zero-copy read into pandas, polars, DuckDB. - Versioned writes with time travel (checkout any past snapshot). - No server process; your Python / TypeScript process opens the DB directly. - Rust core, bindings for Python and JS/TS. Pick LanceDB when: - You want a vector store without standing up another service. - Your corpus sits in S3 / GCS and you want to query it in place. - Data analytics (pandas, polars, DuckDB) is part of your retr…