nxdong / lancedb

Developer-friendly, serverless vector database for AI applications. Easily add long-term memory to your LLM apps!

Developer-friendly, serverless vector database for AI applications

Documentation • Blog • Discord • Twitter

---

LanceDB is an open-source database for vector-search built with persistent storage, which greatly simplifies retrevial, filtering and management of embeddings.

The key features of LanceDB include:

• Production-scale vector search with no servers to manage.

• Store, query and filter vectors, metadata and multi-modal data (text, images, videos, point clouds, and more).

• Support for vector similarity search, full-text search and SQL.

• Native Python and Javascript/Typescript support.

• Zero-copy, automatic versioning, manage versions of your data without needing extra infrastructure.

• Ecosystem integrations with LangChain 🦜️🔗, LlamaIndex 🦙, Apache-Arrow, Pandas, Polars, DuckDB and more on the way.

LanceDB's core is written in Rust 🦀 and is built using Lance, an open-source columnar format designed for performant ML workloads.

Quick Start

Javascript

npm install vectordb

const lancedb = require('vectordb');
const db = await lancedb.connect('data/sample-lancedb');

const table = await db.createTable('vectors', 
      [{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
       { id: 2, vector: [1.1, 1.2], item: "bar", price: 50 }])

const query = table.search([0.1, 0.3]);
query.limit = 20;
const results = await query.execute();

Python

pip install lancedb

import lancedb

uri = "/tmp/lancedb"
db = lancedb.connect(uri)
table = db.create_table("my_table",
                         data=[{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
                               {"vector": [5.9, 26.5], "item": "bar", "price": 20.0}])
result = table.search([100, 100]).limit(2).to_df()

Blogs, Tutorials & Videos

• 📈 2000x better performance with Lance over Parquet
• 🤖 Build a question and answer bot with LanceDB