Knowledge graphs

Apache AGE

PostgreSQL extension for property graphs that enables Cypher queries alongside standard SQL.

Overview

Apache AGE transforms PostgreSQL into a graph database by adding native support for the Cypher query language within the existing relational engine. It allows teams to co-locate graph data with transactional tables, run ACID-compliant graph queries, and leverage PostgreSQL's mature ecosystem for backups, security, and extensions. The project is fully open-source and maintained by the Apache community.

Best for

Projects already running PostgreSQL that need graph capabilities added quickly
Teams requiring strict ACID guarantees for both relational and graph data

Trade-offs

vs Kuzu

Apache AGE for PostgreSQL-native teams wanting zero additional infra; Kuzu for lightweight, embedded AI research workflows

What XeroHack pre-wires

When you pick Apache AGE in the interview, the engine emits these files into your scaffold:

pg_extension install + Cypher graph initialization
SQL-to-Cypher migration scripts for existing schemas

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