Welcome to the documentation for Citus 12.1! Citus is an open source extension to PostgreSQL that transforms Postgres into a distributed database. To scale out Postgres horizontally, Citus employs distributed tables, reference tables, and a distributed SQL query engine. The query engine parallelizes SQL queries across multiple servers in a database cluster to deliver dramatically improved query response times, even for data-intensive applications.
Learn the Citus architecture, install locally,
and follow some ten-minute tutorials.
See how Citus allows multi-tenant applications
to scale with minimal database changes.
Move from plain PostgreSQL to Citus, and discover
data modeling techniques for distributed systems.
Explore our secure, scalable, highly available
database-as-a-service.
Get the most out of Citus by learning its
functions and configuration.
See the frequently asked questions, and
contact us. This is the page to get unstuck.
.. toctree:: :caption: Get Started :hidden: get_started/what_is_citus.rst get_started/tutorials.rst
.. toctree:: :caption: Install :hidden: installation/single_node.rst installation/multi_node.rst installation/citus_cloud.rst
.. toctree:: :caption: Use-Case Guides :hidden: use_cases/multi_tenant.rst use_cases/realtime_analytics.rst use_cases/timeseries.rst
.. toctree:: :caption: Architecture :hidden: get_started/concepts.rst
.. toctree:: :caption: Develop :hidden: develop/app_type.rst sharding/data_modeling.rst develop/migration.rst develop/reference.rst develop/api.rst develop/integrations.rst
.. toctree:: :caption: Administer :hidden: admin_guide/cluster_management.rst admin_guide/table_management.rst admin_guide/upgrading_citus.rst
.. toctree:: :caption: Troubleshoot :hidden: performance/performance_tuning.rst admin_guide/diagnostic_queries.rst reference/common_errors.rst
.. toctree:: :caption: FAQ :hidden: faq/faq.rst
.. toctree:: :caption: Articles :hidden: articles/index.rst