LadybugDB

LadybugDB is an embedded, in-process property graph database — no server process required. It uses the openCypher query language with a required, predefined schema (unlike Neo4j), columnar disk-based storage, vectorized query execution, and serializable ACID transactions.

Quick orientation

• Schema-first: you must create node/rel tables before inserting data
• One primary key per node table — automatically indexed, unique, non-null
• Walk semantics: repeated edges allowed in MATCH (unlike Neo4j's trail semantics)
• One write transaction at a time; multiple concurrent reads are fine
• In-memory mode: use ":memory:" as the database path for ephemeral databases

Installation

# CLI
curl -s https://install.ladybugdb.com | bash   # Linux
brew install ladybug                             # macOS