数据库云数据库备份的相关内容

阿里云文档 2025-06-27

PolarDB备份原理

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...

阿里云文档 2025-06-27

PolarDB备份原理

阿里云文档 2025-06-23

物理备份上云方案

阿里云文档 2025-06-12

查看数据灾备备份集

数据备份完成后，您可以通过备份集列表查看备份集，并对其进行管理、删除以及下载等操作。本文将介绍如何查看备份集。

阿里云文档 2025-02-13

PolarDB MySQL备份原理

问答 2024-06-19 来自：开发者社区

DBS数据库备份的云数据库，不支持物理备份吗？

文章 2023-05-23 来自：开发者社区

企业运维训练营之数据库原理与实践—云数据库备份与恢复—数据库备份恢复介绍

一、数据库备份恢复介绍备份是通过特定方法将数据库的必要文件或数据以特定格式转储到其他存储媒介中。备份内容可以是物理文件，也可以是逻辑数据。存储形式可以是SQL文件、CSV文件，也可以是二进制文件等。存储媒介可以是文件系统、存储、NAS、磁态机等。恢复指将备份文件中的特定数据通过工具或命令的方式恢复到指定的数据库中。其中特定数据主要指备份结果，可以全量恢复，也....

文章 2023-05-23 来自：开发者社区

企业运维训练营之数据库原理与实践—云数据库备份与恢复—数据库备份恢复原理（下）

接上篇：https://developer.aliyun.com/article/1224053?groupCode=supportservice二、数据库备份恢复原理 Xtrabackup备份流程如下：首先，备份开始时会Fork一个进程，也会启动redo拷贝线程。拷贝时会监听redo log变换并写到xtrabackup log文件中，拷贝InnoDB引擎的....

文章 2023-05-23 来自：开发者社区

企业运维训练营之数据库原理与实践—云数据库备份与恢复—数据库备份恢复原理（上）

二、数据库备份恢复原理进行逻辑备份时会涉及很多库表，比如备份a表时花费10秒钟，而开始备份b表时已经是10秒钟以后的数据，会导致数据不一致。此类问题如何解决？ MySQL能够通过事务与各种日志保证数据一致性。 MySQL的主流引擎是InnoDB，是一个事务型引擎。事务的4个特性为原子性、一致性、隔离性与持久性，以上四个特性能够完整描述出事务的样子。事....

文章 2023-05-23 来自：开发者社区

企业运维训练营之数据库原理与实践—云数据库备份与恢复—云上备份恢复能力与场景

三、云上备份恢复能力与场景下图为云数据库RDS备份恢复的简单流程。对实例进行备份系统时，要合理安排全量与增量备份的频率。上图中有两个slave节点，全量备份在slave上做，增量备份在每个节点上进行，全量和增量备份均上传到OSS，上传完之后本地binlog即可删除。云上提供了相关参数的选择，比如本地保留多久、保留多少文件，以减少空间占用。另外，云上提供了一键....

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更新时间 2024-06-21 13:12:53

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