分布式数据库polardb-x 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 2023-05-24 来自：开发者社区

PolarDB-X是一款面向超高并发、海量存储、复杂查询场景设计的云原生分布式数据库系统。其采用Shared-nothing与存储计算分离架构，支持水平扩展、分布式事务、混合负载等能力，具备企业级、云原生、高可用、高度兼容MySQL系统及生态等特点。 PolarDB-X最初为解决阿里巴巴天猫“双十一”核心交易系统数据库扩展性瓶颈而生，之后伴随阿里云一路成长，是一款经过多种核心业务场景验证的、成熟....

文章 2023-05-24 来自：开发者社区

开源分布式数据库PolarDB-X源码解读——PolarDB-X源码解读（一）：CN代码结构

本文主要介绍PolarDB-SQL（即PolarDB-X CN计算层）代码结构，首先简要回顾PolarDB-X的架构，然后从目录入手介绍各个模块的功能，最后列出一些关键接口便于读者调试代码。、一、整体架构 PolarDB-X包含4个核心组件构成，CN（Compute Node）负责计算....

文章 2023-05-23 来自：开发者社区

开源分布式数据库PolarDB-X源码解读——PolarDB-X源码解读（二）：CN启动流程

本文主要讲解PolarDB-X的CN节点（polardbx-sql）的启动过程包括参数加载、元信息加载等过程并对启动过程中设计的模块做简单的介绍。 CN Server层的代码主要包含在polardbx-server模块中，main函数位于TddlLauncher。主逻辑入口在CobarServer.init()方法中。 CN启动分为以下几个流程： 1.CobarServer对象的创....

文章 2023-05-23 来自：开发者社区

开源分布式数据库PolarDB-X源码解读——PolarDB-X源码解读（三）：CDC代码结构

polardbx-cdc是云原生分布式数据库系统PolarDB-X的一个核心组件，负责全局增量日志的生成、分发和订阅。通过polardbx-cdc，PolarDB-X数据库可以对外提供完全兼容MySQL Binlog格式和协议的增量日志，可实现与MySQL Binlog下游生态工具的无缝对接。本篇将对polardbx-cdc的代码结构做一个系统介绍，并讲解一下如何快速搭建开发环境。一、总体架构....

文章 2023-05-23 来自：开发者社区

开源分布式数据库PolarDB-X源码解读——PolarDB-X源码解读（四）：SQL的一生

前文中，我们给出了组成polardbx-sql的三个部分，并从目录入手介绍了重要模块/目录，最后不加解释的列出了一些关键接口作为调试代码的切入点。本文将从SQL执行角度出发，介绍polardbx-sql（CN）代码中与SQL解析执行相关的关键代码。一、概述“SQL的一生”特指从客户端创建连接发送SQL开始，到客户端收到返回结果结束，期间CN代码中发生的故事。与人的一生类似，从不同角度观测“SQ....

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