Citus Documentation

Welcome to the documentation for Citus 7.3! Citus horizontally scales PostgreSQL across commodity servers using sharding and replication. Its query engine parallelizes incoming SQL queries across these servers to enable real-time responses on large datasets.

Getting Started

Learn the Citus architecture, install locally, and follow some ten-minute tutorials.

Use Cases

See how Citus allows multi-tenant applications to scale with minimal database changes.

Migrating to Citus

Move from plain PostgreSQL to Citus, and discover data modeling techniques for distributed systems.

Citus Cloud

Explore our secure, scalable, highly available database-as-a-service.

API / Reference

Get the most out of Citus by learning its functions and configuration.

Help and Support

See the frequently asked questions, and contact us. This is the page to get unstuck.