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阿里云和 AWS 都发布过 mysql 和 pg 的计算存储分离版本，提速不少，google 这次算是补全产品线，相比 AWS 快一丢丢（aws 版本比开源 pg 快 3 倍）。下面是一些重要特性对比：

* Fully compatible with PostgreSQL, providing flexibility and true portability for your workloads
* Superior performance, 4X faster than standard PostgreSQL for transactional workloads*
* Fast, real-time insights, up to 100X faster analytical queries than standard PostgreSQL*
* Transparent and predictable pricing, with no expensive licensing and no opaque I/O charges
* Simplified management with machine learning-enabled autopilot systems

相关文章：

[AlloyDB for PostgreSQL (PREVIEW)](https://cloud.google.com/alloydb)

[AlloyDB for PostgreSQL under the hood: Intelligent, database-aware storage](https://cloud.google.com/blog/products/databases/alloydb-for-postgresql-intelligent-scalable-storage)

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