Introduction

LatticeDB is the world’s first production-grade hybrid graph/vector database that runs entirely in the browser with zero backend required.

What is LatticeDB?

LatticeDB combines two powerful database paradigms into a single, unified engine:

• Vector Search Engine - HNSW-based approximate nearest neighbor search with SIMD acceleration
• Graph Database - Full Cypher query language support with BFS/DFS traversal

This hybrid approach enables powerful use cases that neither paradigm can achieve alone, such as:

• Finding similar documents AND their relationships
• Semantic search with graph-based re-ranking
• Knowledge graphs with embedding-based similarity

Key Features

Browser-Native Execution

LatticeDB compiles to WebAssembly and runs entirely in the browser:

• Zero server costs - No backend infrastructure required
• Sub-millisecond latency - No network round-trips
• Privacy by default - Data never leaves the user’s device
• Offline-capable - Works without internet connectivity

Extreme Performance

LatticeDB is faster than industry-standard databases:

API Compatibility

• Qdrant-compatible REST API - Drop-in replacement for existing vector search apps
• Cypher query language - Familiar syntax for graph operations
• Rust, TypeScript, and Python client libraries

Use Cases

RAG Applications

Build retrieval-augmented generation apps that run entirely in the browser:

User Query → Vector Search → Context Retrieval → LLM Response

Knowledge Graphs

Create and query knowledge graphs with semantic similarity:

MATCH (doc:Document)-[:REFERENCES]->(topic:Topic)
WHERE doc.embedding <-> $query_embedding < 0.5
RETURN doc, topic

Personal AI Assistants

Build privacy-preserving AI assistants where all data stays local:

• Chat history with semantic search
• Personal knowledge bases
• Offline-capable reasoning

Architecture Overview

┌─────────────────────────────────────────────────┐
│                   LatticeDB                      │
├─────────────────────────────────────────────────┤
│  ┌─────────────┐    ┌─────────────┐            │
│  │   Vector    │    │    Graph    │            │
│  │   Engine    │◄──►│   Engine    │            │
│  │  (HNSW)     │    │  (Cypher)   │            │
│  └─────────────┘    └─────────────┘            │
├─────────────────────────────────────────────────┤
│              Unified Storage Layer               │
│  (MemStorage | DiskStorage | OPFS)              │
└─────────────────────────────────────────────────┘

Getting Started

Ready to dive in? Start with the Installation guide.

License

LatticeDB is dual-licensed under MIT and Apache 2.0. Choose whichever license works best for your project.