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wiki/entities/Aurora.md
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title: "Aurora"
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type: entity
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tags:
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- AWS
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- Database
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- Cloud Native
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sources:
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- ctp-topic-66-exposing-the-differences-between-postgresql-rds-and-aurora
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last_updated: 2026-04-18
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---
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## Definition
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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。
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## Key Characteristics
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- 存储架构:6 个 EBS 卷跨 3 个 AZ
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- RTO:30 秒(AZ 故障场景)
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- 自动扩展:支持 Serverless v2
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- 读副本:与主库共享存储,无需数据复制
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## Pricing
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- 最低实例规格和成本高于 RDS
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- IO 按 IOPS 计费(实际无上限)
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## Use Cases
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- 大型数据库(10-20TB+)
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- 需要高 availability 的生产环境
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- 需要快速故障恢复的业务
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