A high-performance, lazy MongoDB connector for Polars.
Project description
polars-mongo
A high-performance, native MongoDB connector for Polars, written in Rust. Why polars-mongo?
- Filter at the database, avoiding the python overhead
- Keep polars syntax
Key Features Native Speed: Built with Rust and pyo3-polars for maximum BSON-to-Arrow throughput.
Projection Pushdown: Fully optimized to query only the fields you select (including subfields).
Predicate Pushdown : Push down basic filters to mongodb, fall back on polars for more complicated filters to ensure correctness
Lazy Integration: Works seamlessly with the pl.LazyFrame API.
Installation
uv add polars-mongo
# or
pip install polars-mongo
Roadmap [x] V0.2.0: Predicate Pushdown (Filtering at the database level). [ ] v0.3.0: RawBson Zero-Copy Deserialization
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