Is polardb for PostgreSQL underlying PostgreSQL?

PolarDB for PostgreSQL The bottom is PostgreSQL Do you ？

Take the answer 1：

A：(1) The bottom is PostgreSQL;(2) be based on PostgreSQL 11 Development . Community Edition PostgreSQL be based on Shared-Nothing framework ,PolarDB for PostgreSQL Put it in the cloud , The ground floor was replaced with Shared-Storage framework , It is convenient for storage and computing to scale elastically on the cloud , There are many problems to be solved . Please refer to the architecture interpretation in the document for details ：https://apsaradb.github.io/PolarDB-for-PostgreSQL/zh/architecture/#%E7%89%B9%E6%80%A7%E6%80%BB%E8%A7%88.

Excerpt from above 《PolarDB for Postgres SQL 》 e-book , Click on https://developer.aliyun.com/ebook/download/7673 The finished version can be downloaded

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https://yzsam.com/2022/198/202207141606210719.html

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Is polardb for PostgreSQL underlying PostgreSQL?

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