polardb-x数据库分库的相关内容

阿里云文档 2025-09-19

PolarDB-X企业版创建TTL表

本文通过介绍TTL表的定义、创建、调整、删除，帮助您快速了解TTL表的基础操作。

阿里云文档 2025-09-19

PolarDB-X企业版冷数据归档最佳实践

本文为您介绍冷数据归档如何选择适合的归档方案以及案例分享。

阿里云文档 2025-07-24

PolarDB-X企业版冷数据清理

本文为您介绍TTL表冷数据清理算法以及如何管理清理任务。

阿里云文档 2025-07-10

PolarDB-X企业版创建归档表

为表添加TTL定义后，如需高压缩、低成本的存储TTL的所有数据（基于列存索引，存储在远端对象存储（OSS）），您可以为TTL表创建对应的归档表。

文章 2022-02-17 来自：开发者社区

PolarDB-X 1.0-API参考-1.0（2017版本）-数据库管理类 API-查询分库列表

请求参数参数名类型是否必须说明ActionString是系统规定参数，取值：DescribeShardDBsDrdsInstanceIdString是DRDS 实例 IDDbNameString是数据库名返回值参数名类型描述公共返回值DataList<DbIntancePair>由 RdsInstance 组成的数组RdsInstance 组成参数名类型描述SubDbNameStri....

文章 2022-02-17 来自：开发者社区

PolarDB-X 1.0-常见问题-分库分表问题-为什么在PolarDB-X的数据库中创建一张单表，它会在每一个分库中都创建同样的表，但数据只存储在第一个分库上？

PolarDB-X 1.0设计为，创建单表时会给所有的分库里面都创建同样的表，但数据只存储第一个分库的表里面，目的是为了在单表转到广播表的时候，可以不用初始化表结构，仅需要同步数据。

文章 2022-02-17 来自：开发者社区

PolarDB-X 1.0-常见问题-性能问题-单个 RDS 实例应该分配多少个数据库，物理机的 IO 能力才能充分发挥？分库过多是否会达到物理 IO 上限，导致性能下降？分库过多是否会无法充分利用 IO？

这个和分库数目没有直接关系，而是取决于应用的查询与该 RDS 实例的 QPS 大小。目前 DRDS 在 RDS 实例的默认分库数目是 8 个。

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更新时间 2024-07-25 13:47:36

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