Dev Tools · 1h ago
Bitweave: Sub-millisecond hybrid retrieval in under 1.1 MB RAM
Bitweave is a Rust-based hybrid retrieval engine with Python bindings that achieves sub-millisecond latency on 200,000 records while using only 1.1 MB of RAM. It uses zero-copy memory mapping, 1-bit SIMD pre-filtering, and exact float32 rescoring. The tool is available on PyPI for Linux, macOS, and Windows.
Meridian48 take
Impressive memory efficiency, but real-world RAG pipelines often need more than just retrieval speed—integration with LLMs and data pipelines will determine adoption.
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Why We Built Bitweave: Sub-Millisecond Hybrid Retrieval in <1.1 MB RSS Memory →
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