Fast, scalable, enterprise-grade Postgres natively integrated with ClickHouse
Sai, Kaushik and The ClickHouse Team
Jan 22, 2026 - 9 minutes read
Today, we're announcing a fast, scalable and an enterprise-grade managed Postgres service natively integrated with ClickHouse, built for real-time and AI-driven applications. We are offering a Unified Data Stack that brings transactional and analytical workloads together without traditional complexity. By combining Postgres for transactions with ClickHouse for analytics, teams get best-in-class performance and scalability on an open-source foundation while significantly reducing operational overhead.
Developers get a high-performance, scalable Postgres service backed by local NVMe storage, delivering up to 10X faster performance for fast-growing workloads that are mostly disk-bound. In just a few clicks, using native CDC capabilities, they can sync transactional data in Postgres to ClickHouse to make it analytics-ready, unlocking up to 100X faster analytics. With a unified query layer powered by the pg_clickhouse Postgres extension, they can build applications that seamlessly span transactions and analytics without managing separate systems.
Get started with our native Postgres Service
To try ClickHouse's native Postgres service, sign up for Private Preview using this link.
This demo showcases how the various pieces come together to form a Unified Data Stack powered by Postgres and ClickHouse.
To achieve this, we're partnering with Ubicloud, an open-source cloud company that offers one of the fastest Postgres services and whose founding team has a track record of delivering world-class Postgres at Citus Data, Heroku, and Microsoft.
Noah Pryor, the CTO of Beehiv, a large ClickHouse customer, shared excitement for this launch, "We’re excited to see ClickHouse entering the Postgres ecosystem. At Beehiv, we rely heavily on both Postgres and ClickHouse to power our mission-critical, customer-facing applications. We’ve invested significant effort in integrating these technologies, so a tighter, more native integration between them would materially simplify our architecture."
Across thousands of fast growing AI-driven companies using Postgres, performance and scalability consistently emerge as challenges. Common issues include slower ingestion (mainly updates), slower vacuums, increased tail latency for reads and writes, long-running, slow transactions causing lock contention and sudden WAL spikes, among others. In most cases, these issues stem from limited disk IOPS and suboptimal disk latency. With unlimited IOPS, Postgres can operate more efficiently than it does today on most other managed Postgres services.
Postgres managed by ClickHouse is an enterprise-grade managed Postgres service backed by NVMe storage. The NVMe storage is physically colocated with compute, delivering orders of magnitude lower disk latency and higher IOPS than alternatives such as EBS-backed volumes, which require a network round trip for disk access. As a result, disk access latency can be on the order of microseconds rather than milliseconds. For fast-growing Postgres workloads that are primarily throttled by disk IOPS and latency, we expect up to 10X speedups at the same cost and hardware profile compared to other Postgres providers.
"We're excited that ClickHouse is offering a native Postgres service to complement its core OLAP database. NVMe-backed Postgres performance, combined with seamless integration with CDC and pg_clickhouse for fast analytics, makes it very compelling for us to build our fast-growing applications." - Aditya Maru, Co-founder, Blacksmith.sh
The image below shows the reduction in P99 latency for disk-bound workloads when moving from traditional Postgres to NVMe-backed Postgres.
To select the best architecture, we evaluated many Postgres providers as potential partners. Ubicloud stood out by offering a reliable Postgres service backed by NVMe storage that addressed the same customer challenges we observed and outperformed other providers by orders of magnitude in real-world benchmarks. We plan to share a detailed blog post on our evaluation process in the future.
We evaluated alternative architectures, including separating storage and compute, and found that object-storage-backed Postgres is not well suited for OLTP workloads, where consistent and predictable latency and throughput are essential. Object storage works well for analytics, but its higher latency and coarse-grained I/O make it challenging to support transactional patterns. We’ll dive deeper into this trade-off in a follow-up blog post.
Developers can natively integrate their Postgres with ClickHouse to enable 100x faster analytics. It comes with two critical features enabling this integration. These features are central to powering the Unified Data Stack, combining Postgres for transactions and ClickHouse for analytics with no overhead.
The diagram below depicts the Unified Data Stack, highlighting Postgres for OLTP, ClickHouse for OLAP, continuous replication between the two, and a unified query layer via the pg_clickhouse extension.
Seamlessly replicate Postgres data to ClickHouse in real time to make it analytics-ready. We support both an initial load to migrate existing data to ClickHouse and CDC for incremental syncs. This feature is powered by the Postgres CDC connector in ClickPipes, which is battle-tested by 100s of enterprise customers moving 100s of TB per month.
We plan to offer additional features for more native CDC, including sub-second replication latency, replication of ongoing transactions using logical replication v2 for reliable slot flushing, etc. all of which will be exclusive to our native Postgres service.
pg_clickhouse: unified query layer for OLTP and OLAP #
Every Postgres service comes with the pg_clickhouse Postgres extension, which enables users to query ClickHouse directly from Postgres. It allows Postgres to act as a unified query layer, powering not just transactions but also analytics using ClickHouse internally, making it easy for developers to build applications.
pg_clickhouse provides comprehensive query pushdown to ClickHouse for efficient query execution, including support for FILTERs, JOINs, SEMI-JOINs, aggregations, functions and more. Currently, 14 of 22 TPC-H queries are fully pushed down, delivering over 60x performance improvements compared to standard Postgres.
We will continue expanding pushdown support to more complex queries, including CTEs, window functions, and beyond, all with the goal of enabling users to build fast analytics from the Postgres layer itself while still leveraging the power of ClickHouse.
Users can seamlessly create foreign tables in Postgres that point to ClickHouse tables under the hood and start powering analytics using these foreign tables. As we evolve pg_clickhouse, we'll work toward making this experience as UX-friendly as possible, including auto-creating foreign tables for replicated data, auto-routing transactions and analytics to the appropriate engines (Postgres or ClickHouse), and more.
Our native Postgres service provides enterprise-grade reliability from day one. We offer strong high availability (HA), allowing a primary with up to two standby instances across different availability zones (AZs) using quorum-based replication. These standby instances are dedicated to HA and auto-failover; they are not exposed as read replicas, as that could impact HA guarantees. Read scaling is handled via separate read replicas (details here).
For disaster recovery, every service comes with automatic backups that support forks and point-in-time recovery. The backups run on WAL-G, a well-known open-source Postgres tool that handles full backups and continuous WAL archiving to object storage like S3. WAL-G was originally created by Daniel Farina, co-founder of Ubicloud, during his time at Citus Data, another testament to the quality of the team we're partnering with.
It is built to meet the same high standards for security, privacy, and compliance as ClickHouse Cloud. As part of a unique partnership, Ubicloud runs entirely within AWS accounts owned by ClickHouse Cloud and is subject to the same security, privacy, and governance controls applied across the platform. It already includes core capabilities such as SAML/SSO, IP allow-listing, data encryption at rest and in transit, as well as PrivateLink (available via a support ticket), with plans to further align and unify with the advanced features offered by ClickHouse Cloud over time.
The managed Postgres service is built on an open source first philosophy. Postgres and ClickHouse are both open-source databases with large, thriving communities. Every component that integrates Postgres and ClickHouse is open source, from the pg_clickhouse extension that enables a unified query layer to PeerDB, which powers real-time CDC and replication.
Ubicloud, our strategic partner on the managed Postgres service, is also an open source company, deeply aligned with this philosophy This was a major factor in choosing the right partner. We are jointly contributing to the open-source ecosystem to deliver a world-class Postgres to the community, and this collaboration is already underway. Here are a few key contributions from the ClickHouse team to the Ubicloud open-source repository.
This open source foundation ensures there is no vendor lock-in, giving developers full control, transparency, and long-term flexibility over their data stack.
To try ClickHouse's native Postgres service, sign up for Private Preview using this link.
Our team will reach out within a day and work closely with you to provide early access. The private preview is fully free and entails no cost.
It is currently available on AWS in 10 public regions, with over 50 NVMe-backed configurations ranging from 2 vCPUs / 8 GB RAM / 118 GB disk to 96 vCPUs / 768 GB RAM / 60 TB storage. We plan to expand to additional regions and other cloud service providers, including GCP and Azure, in the near future. The offering includes all standard managed service features, including high availability, forks, read replicas, PgBouncer, upgrades, and more, along with deep integration with ClickHouse.
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