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PolarDB集群的数据备份是指在某个时间点上对集群的全量数据进行备份，生成一个备份集（快照）。该备份过程采用ROW（Redirect-on-Write）快照机制，直接存储在PolarDB集群的分布式存储系统上。在保存备份时，数据并未被真正复制。而当数据块发生修改时，系统会将历史版本的数据块保留给快照，同时生成一个新的数据块被原数据引用（Redirect）。本文将详细介绍创建备份、删除备份以及在数...

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文章 2024-08-15 来自：开发者社区

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什么是 PostgreSQL? PostgreSQL 是一种现代的数据库管理系统。它经常被用来存储和操作与网站和应用程序相关的信息。与任何有价值的数据一样，实施备份方案以防止数据丢失是非常重要的。本指南将涵盖一些实用的方法，可以用来备份您的 PostgreSQL 数据。我们将使用一个安装了 PostgreSQL 9.1 的 Ubuntu 12.04 VPS。大多数现代...

文章 2024-08-12 来自：开发者社区

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文章 2022-02-16 来自：开发者社区

备份基于Docker的PostgreSQL数据库

本文讲的是，【编者的话】本文属于基础入门类文章，作者介绍了如何备份基于Docker的PostgreSQL数据库。通过本文你可以学习到Docker容器的构建以及运行命令，并带你复习Docker容器的基本原理。我发现，很多初学者都很关心Docker能否解决现有的一些问题，当然之前的解决方案也仍可以用。所以这篇文章的主题是使用Docker备份你的关系型数据库。我会通过具体的例子来介绍如何使用Docke....

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