1.8 KiB
1.8 KiB
title, type, tags, date, source_file
| title | type | tags | date | source_file | |||||
|---|---|---|---|---|---|---|---|---|---|
| CTP Topic 66 Exposing the differences between PostgreSQL RDS and Aurora | source |
|
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 RTO,RDS 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 AZ,RDS 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
- Aurora:Amazon 自研云原生数据库,使用 6 个 EBS 卷跨 3 个 AZ
- RDS:Amazon 关系型数据库服务,使用计算+附加存储架构
- RTO(Recovery 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)