AlloyDB for PostgreSQL
7/10Fully managed, PostgreSQL-compatible database service on Google Cloud for demanding transactional, analytical and AI workloads, with a downloadable Omni edition.
Data last updated November 2026 · Our methodology
Overview
AlloyDB for PostgreSQL is Google Cloud's managed database service for teams that want PostgreSQL compatibility with more performance and availability than a standard managed Postgres instance. Compute is separate from a shared, distributed storage layer. Primary instances are highly available by default, with nodes in two zones and automatic failover. Read pools can grow to 20 nodes per cluster. A built-in columnar engine runs analytical queries on live transactional data, and adaptive autovacuum, an index advisor and near-zero-downtime maintenance cut down routine DBA work. AlloyDB AI adds vector storage, ScaNN-based indexes, SQL calls to Vertex AI and external models, and natural-language-to-SQL. AlloyDB Omni is a downloadable edition of the same engine that you can run on your own infrastructure or on other clouds. It suits mid-market and enterprise teams already on Google Cloud that run high-throughput Postgres applications or AI search features. There is no licence fee. You pay per hour for vCPU and memory, per GB-month for storage and backups, and standard network egress. Committed use discounts are available on one-year or three-year terms. Integrations include Google Cloud IAM, customer-managed encryption keys, Vertex AI, Database Migration Service and standard Postgres tools such as psql and pgAdmin. The main limitation is cost. Independent comparisons put AlloyDB at roughly a 39% premium over Cloud SQL Enterprise, and it supports only PostgreSQL, so it can be overkill for small or simple workloads.
Our Rating
AI Software6.8/10
Hosting & Infrastructure7.2/10
Who AlloyDB for PostgreSQL is best for
Best software for EnterpriseGood fit
The 99.99% SLA, CMEK encryption, cross-region disaster recovery and scaling to 128 vCPUs are aimed at large production workloads.
High-throughput Postgres compatibility and read pools suit growing SaaS backends on Google Cloud.
Full Postgres compatibility, pgvector and AI integrations, plus the free Omni Developer Edition, appeal to developers building AI apps.
Less suited
Premium pricing compared with Cloud SQL makes it a poor fit for small, simple databases.
Pros & Cons
Pros
- Primary instances are highly available by default, with a 99.99% SLA and failover in under 60 seconds.
- The columnar engine lets teams run analytical queries on live transactional data without a separate warehouse.
- AlloyDB AI provides vector search with ScaNN indexes, SQL calls to Vertex AI, OpenAI and Anthropic models, and natural-language-to-SQL.
- Read pools of up to 20 nodes share storage, and storage scales automatically.
- Omni runs the same engine outside Google Cloud, which reduces lock-in.
Cons
- Independent analyses put it at roughly a 39% premium over Cloud SQL Enterprise.
- It supports only PostgreSQL. There is no MySQL or SQL Server option.
- Resizing an instance causes brief downtime, and you cannot freely choose Postgres versions.
- Very few independent user reviews exist on G2 and PeerSpot.
- Omni is self-managed, so you handle backups and high availability yourself.
Key Features
Not included
- Managed WordPress
- Shared Hosting
AlloyDB for PostgreSQL Pricing
AlloyDB Omni Developer Edition
- Downloadable, self-managed edition
- Runs on your own infrastructure or other clouds
Pay as you go
- No licence fee
- Billed hourly per vCPU and GiB of memory
- 1-year and 3-year committed use discounts
- Storage billed per GB-month with no separate I/O charges
Frequently Asked Questions
AlloyDB Omni Developer Edition is free, and new Google Cloud trial credits can be used on AlloyDB. Google's documentation also lists AlloyDB Express in Preview, with a monthly free tier for the first 12 months and scale-to-zero compute.
You pay per hour for vCPU and memory, per GB-month for storage and backups, and standard network egress. There is no licence fee or separate I/O charge, and committed use discounts apply on 1-year or 3-year terms.
AlloyDB offers a 99.99% availability SLA. Primary instances run across two zones with automatic failover.
Yes. It is PostgreSQL-compatible and supports extensions such as PostGIS and pgvector, but you should check that the specific extensions you need are available.
It integrates with Google Cloud IAM, encrypts data at rest and in transit, supports customer-managed encryption keys (including for backups), and offers the AlloyDB Auth Proxy.
It offers on-demand and scheduled backups, continuous backup with point-in-time recovery, and cross-region secondary clusters for disaster recovery.
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