• Distributed Scale

    Scale out Postgres by distributing your data & queries across a cluster. And it’s simple to add nodes & rebalance shards when you need to grow.

  • Parallelized Performance

    Speed up queries by 20x to 300x (or more) through parallelism, keeping more data in memory, higher I/O bandwidth, and columnar compression.

  • managed database service cloud icon
    Managed Database Service

    Run Citus in the cloud with Hyperscale (Citus), a built-in option in the Azure Database for PostgreSQL managed service.

  • Simplified Architecture

    Reduce your infrastructure headaches by using a single database for both your transactional and analytical workloads.

Hyperscale (Citus) Features

What’s New in Hyperscale (Citus)

Private access

With Private access, you can allow hosts on a virtual network (VNet) to securely access a Hyperscale (Citus) server group over a private endpoint.

Postgres 14!

Postgres 11, 12, and 13 database versions are all supported. Postgres major version upgrades now available with minimal downtime. And as of Oct 2021, Postgres 14 is supported in many Hyperscale (Citus) regions too.

Basic tier (single node)

With Basic tier, you can be “scale-out-ready” by sharding Postgres on a single Hyperscale (Citus) node and using a distributed data model from the start—so you can easily add nodes later. Or use Basic tier as a handy way to try out Citus.

Columnar compression

With the new columnar storage feature in Hyperscale (Citus), you can compress regular Postgres tables and/or distributed tables to reduce disk footprint, reduce I/O bandwidth needs, and speed up queries.

Citus 10

In addition to features like columnar compression and basic tier, the latest release of Citus 10 is now available in many Hyperscale (Citus) regions and will roll out to remaining regions in the coming months.

Easy to Scale

Basic tier

Be “scale-out-ready” by sharding Postgres on a single Hyperscale (Citus) node and using a distributed data model from the start—so you can easily add nodes later. Or use Basic tier as a handy way to try out Citus.

Sharding Postgres

Transparently shard Postgres tables across multiple nodes to give your application more memory, compute, and disk. Which gives you parallelism, high performance, and a way to scale. And with Basic tier, you can also shard Postgres on a single Hyperscale (Citus) node.

Easy to scale up nodes

Easy to increase compute/memory and storage on your Hyperscale (Citus) coordinator & worker nodes.

Easy to add nodes

It’s as simple as moving a slider to add nodes to your Hyperscale (Citus) cluster, whether starting with Basic tier or Standard tier in the Azure Database for PostgreSQL managed service.

Online Shard Rebalancer

When adding nodes to a Hyperscale (Citus) server group, the shard rebalancer enables you to redistribute shards across nodes to better balance the data distribution and the performance of your Citus database. Online, with zero downtime.

Read replicas

Analysts & developers alike sometimes need to run complex queries without impacting the production database. Read-only replicas of a Hyperscale (Citus) server group are available in the same region. Forks/PITR also available.

Managed PgBouncer

Outsource PgBouncer administration to Azure. Allow many clients to connect, while limiting the number of active connections and keeping the coordinator node running smoothly.

Managed Database Service

High Availability option

High availability (HA) avoids database downtime by maintaining standby replicas for all nodes in a Hyperscale (Citus) cluster, with streaming replication & automated failover.

Automated backup & restore

Automated backups are stored in multiple Azure availability zones. Point-in-time restore is available for any point in time in the last 35 days. Learn more about backup and restore in the Azure docs.

Automated monitoring & alerts

Automated monitoring, configurable metrics dashboard—plus alert setup through Azure Monitor just like with other Azure services.

Scheduled maintenance

Periodic maintenance is included in the service to keep your managed database secure, stable, and up-to-date. You can select your scheduled maintenance windows or let the system pick a day and time window for you automatically.

Security controls

Security features in Hyperscale (Citus) include: Encryption at rest & in flight, firewall rules, and 2FA. For networking, you can use public access with public IPs, private access with private endpoints—or enable both together.


Pay-as-you-go pricing, or prepay with reserved capacity discounts. Learn more on the Hyperscale (Citus) pricing page.

Learn about the features in the Citus open source extension to Postgres.

See What Hyperscale (Citus) Can Do

Watch a short demo on how to shard Postgres on a single node, so you can start small and seamlessly add nodes to your Hyperscale (Citus) cluster in the future. Umur also demos the new Citus 10 columnar feature, showing >5X compression.

Video thumbnail: UK Covid-19 dashboard / 24X compression demo

Getting Started on Azure

ASB Bank logo

Citus was a game changer for us. After migrating to Citus, we can onboard Vonto customers 20X faster, in 2 minutes vs. the 40+ minutes it used to take. And with the launch of Hyperscale (Citus) on Azure Database for PostgreSQL, we are excited to see what we can build next on Azure.

Head of Integration of Business Ventures at ASB Bank & Chief Product Officer at Vonto