Cayley

Cayley is an open-source database for Linked Data. It is inspired by the graph database behind Google's Knowledge Graph (formerly Freebase).

This is a fork of the upstream project.

Features

🗄️ Multiple Backend Stores

• In-memory, ephemeral
  • btree in-memory-database
• Key-Value Stores
  • Bolt: Lightweight embedded K/V store
  • Badger: Full-featured K/V store
  • Pebble: LevelDB/RocksDB inspired K/V store
• SQL Stores
  • CockroachDB
  • PostgreSQL
  • SQLite
  • MySQL

🔍 Efficient Data Management

• Automatic indexing of quad directions (subject, predicate, object, label)
• Transactions for atomic updates

🔧 Powerful Query Capabilities

• Expressive query languages (Gizmo, Go API) for traversing and analyzing the graph

🌐 API and CLI

• RESTful API for interacting with the database
• Command-line interface for querying and managing databases

License

Apache-2.0