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---
title: "Aurora Global"
type: concept
tags:
- AWS
- Aurora
- Database
- Disaster Recovery
- Multi-Region
sources:
- ctp-topic-66-exposing-the-differences-between-postgresql-rds-and-aurora
last_updated: 2026-04-23
---
## Overview
Aurora Global 是 Amazon Aurora 的跨区域数据库部署方案,允许将一个 Aurora 集群复制到其他 AWS 区域,支持低延迟的全局读取和快速的区域级故障转移。
## Core Features
- **跨区域复制**:异步复制数据到最多 5 个辅助区域
- **托管式切换Managed Switchover**:支持干净的故障转移,无需重新复制数据
- **快速故障转移**AZ 故障时可在约 30 秒内完成 RTO区域级故障通过 Aurora Global 切换
- **全局读取加速**:辅助区域可就近提供读取流量,降低读取延迟
## Key Capabilities
### Managed Switchover
Aurora Global 支持托管式切换Managed Switchover主区域发生故障时
1. 将辅助区域提升为新的主区域
2. 故障区域恢复后,作为新的辅助区域重新加入全球集群
3. 无需重新复制数据,切换过程干净快速
### vs RDS Cross-Region Replication
| 特性 | Aurora Global | RDS Cross-Region |
|------|-------------|-----------------|
| 复制类型 | 异步 | 异步 |
| 故障切换 | 托管式切换,无需重新复制 | 需阻断访问,重建集群 |
| 辅助区域数量 | 最多 5 个 | 依赖具体配置 |
| 读取扩展 | 支持(辅助区域读取) | 支持(读副本) |
## Related Concepts
- [[Amazon Aurora]]Aurora Global 的宿主数据库
- [[RTO]]Aurora Global 帮助实现低 RTO
- [[Multi-AZ]]AZ 级高可用 vs Aurora Global 区域级灾备
- [[Blue-Green Deployment]]Aurora MySQL 支持的部署策略
## Aliases
- Aurora Global Database
- Aurora Global Cluster
- Aurora Cross-Region Replication
- Aurora Multi-Region