Citus is a PostgreSQL extension that transforms Postgres into a distributed database—so you can achieve high performance at any scale.

With Citus, you extend your PostgreSQL database with:

• Distributed tables are sharded across a cluster of PostgreSQL nodes to combine their CPU, memory, storage and I/O capacity.
• References tables are replicated to all nodes for joins and foreign keys from distributed tables and maximum read performance.
• Distributed query engine routes and parallelizes SELECT, DML, and other operations on distributed tables across the cluster.
• Columnar storage compresses data, speeds up scans, and supports fast projections, both on regular and distributed tables.
• Query from any node enables you to utilize the full capacity of your cluster for distributed queries