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---
title: "Aurora"
type: entity
tags:
- AWS
- Database
- Cloud Native
sources:
- ctp-topic-66-exposing-the-differences-between-postgresql-rds-and-aurora
last_updated: 2026-04-18
---
## Definition
Aurora 是 Amazon 自研的云原生关系型数据库,与 MySQL 和 PostgreSQL 兼容。其架构使用 6 个 EBS 卷跨 3 个可用区存储数据,由 Amazon 管理。
## Key Characteristics
- 存储架构6 个 EBS 卷跨 3 个 AZ
- RTO30 秒AZ 故障场景)
- 自动扩展:支持 Serverless v2
- 读副本:与主库共享存储,无需数据复制
## Pricing
- 最低实例规格和成本高于 RDS
- IO 按 IOPS 计费(实际无上限)
## Use Cases
- 大型数据库10-20TB+
- 需要高 availability 的生产环境
- 需要快速故障恢复的业务