title, type, tags, sources, last_updated
| title |
type |
tags |
sources |
last_updated |
| RPO (Recovery Point Objective) |
concept |
|
|
2025-07-26 |
Definition
RPO(Recovery Point Objective,恢复点目标)是指可接受的最大数据丢失量,以时间度量。从最后一次有效备份到故障发生所经历的时间。
Key Characteristics
- 衡量数据保护程度
- 从故障时刻向后计算(倒计时)
- 与备份频率直接相关
- 需要与 RTO 共同规划,不能只优化其中一个
Tiered RPO Targets (from this source)
| Tier |
Examples |
RPO Target |
| Critical |
Payment processing, user auth |
< 1 minute |
| Important |
Admin dashboards, reporting |
< 15 minutes |
| Nice-to-have |
Internal tools, dev environments |
< 1 hour |
Example
如果数据库在下午3点崩溃,而最后一次备份是下午2点,则 RPO 为1小时。2点到3点之间的所有数据丢失。
Connections