recern-vector (Python)
Python bindings for Recern Vector, a single-file, embedded, inspectable vector database.
Version 0.2.0: stable format 2, with compatibility for format-1 databases. Saves commit to WAL; checkpoint before copying a standalone database file.
pip install recern-vector
Wheels cover CPython 3.11+ on Linux (x86_64, aarch64), macOS (Intel, Apple silicon) and Windows (x86_64).
import numpy as np
import recern_vector as rv
with rv.Database.open_or_create("docs.rvec") as db: # saves on clean exit
chunks = db.create_collection("chunks", dim=384, metric="cosine")
chunks.upsert_many(ids, np.asarray(embeddings, dtype=np.float32), metadatas)
hits = chunks.search(query, k=5, filter={"lang": "en", "year": {"$gte": 2020}})
report = chunks.explain(query, k=5) # strategy, visited nodes, elapsed_ms
recall = chunks.estimate_recall(ef_values=[16, 64, 256])
print(chunks.stats())
float32 NumPy arrays are read through the buffer protocol without per-element conversion; plain lists and other dtypes also work. upsert_many builds index links on all cores (threads= to change it) and is atomic: if any vector is invalid, nothing is written.
Benchmarks against faiss, LanceDB and sqlite-vec: recern.net/vector/benchmarks.
Development
uv venv && uv pip install maturin pytest numpy
source .venv/bin/activate
maturin develop --release
pytest
0.2.0 adds int8 (create_collection(..., quantization="int8")), logical $or/$not filters, durable WAL commits, checkpoint() and Database.open_read_only(). Checkpoint before copying a standalone .rvec file. Original f32 vectors are not retained for int8 collections.
1 maintainer
Metadata
1 maintainer
Release files for recern-vector 0.2.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| recern_vector-0.2.0.tar.gz | 66.8 kB | Details |
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| recern_vector-0.2.0-cp311-abi3-win_amd64.whl | CPython 3.11 | abi3 | Windows x86-64 | Details |
| recern_vector-0.2.0-cp311-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl | CPython 3.11 | abi3 | Linux glibc 2.17+ x86-64 | Details |
| recern_vector-0.2.0-cp311-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl | CPython 3.11 | abi3 | Linux glibc 2.17+ ARM64 | Details |
| recern_vector-0.2.0-cp311-abi3-macosx_11_0_arm64.whl | CPython 3.11 | abi3 | macOS 11.0+ ARM64 | Details |
| recern_vector-0.2.0-cp311-abi3-macosx_10_12_x86_64.whl | CPython 3.11 | abi3 | macOS 10.12+ x86-64 | Details |
Total release size: 2.3 MB
Release files / recern_vector-0.2.0.tar.gz
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