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title, type, tags, date, source_file
title type tags date source_file
CTP Topic 66 Exposing the differences between PostgreSQL RDS and Aurora source
AWS
RDS
Aurora
PostgreSQL
CTP
2026-04-14 raw/Cloud & DevOps/Public-Cloud-Learning-Sessions/01_AWS-Landing-Zone/ctp-topic-66-exposing-the-differences-between-postgresql-rds-and-aurora.md

Summary

  • 核心主题PostgreSQL on RDS 与 Aurora 的详细对比,涵盖架构、性能、成本、故障切换和高可用性优化
  • 问题域:选择适合的 AWS 数据库方案
  • 方法/机制:存储架构对比、故障转移机制、监控工具、高可用优化技巧
  • 结论/价值Aurora 适合大型数据库10-20TB+RDS 适合中小型数据库

Key Claims

  • Aurora 提供 30 秒 RTORDS 为 2 分钟AZ 故障场景)
  • Aurora 最低实例规格和成本高于 RDS但扩展性更好
  • Aurora 使用 6 个 EBS 卷跨 3 个 AZRDS 使用附加存储EBS+计算节点

Key Quotes

"With Aurora, you get six EBS volumes. They're spread across three availability zones." — Aurora 存储架构 "Aurora IO is generally unbounded because they're motivated to give you as much IO as you can consume because they're charging you per IO." — IO 计费差异

Key Concepts

  • AuroraAmazon 自研云原生数据库,使用 6 个 EBS 卷跨 3 个 AZ
  • RDSAmazon 关系型数据库服务,使用计算+附加存储架构
  • RTORecovery Time Objective恢复时间目标Aurora 30秒 vs RDS 2分钟
  • Multi-AZ:多可用区部署,实现高可用
  • Blue-Green Deployment蓝绿部署Aurora MySQL 支持大版本升级

Key Entities

  • AWS:提供 RDS 和 Aurora 服务的公有云平台

Connections

Contradictions

  • (暂无)