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nexus/wiki/concepts/Recovery-Assurance.md
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---
title: "Recovery Assurance"
type: concept
tags: [dr, reliability, sre]
---
## Definition
恢复保障Recovery Assurance是一种从设计层面确保系统具备恢复能力的架构理念与传统的灾难恢复DR不同它强调主动式而非被动式响应。
## Key Differences from DR
- **DR灾难恢复**:被动响应,事件发生后尝试恢复
- **Recovery Assurance**:主动设计,在设计阶段就考虑恢复能力
## Core Principles
1. **Design for Failure**:假设组件会故障,设计容错机制
2. **Observability**:持续监控系统健康状态
3. **Automation**:自动检测和恢复能力
4. **Test-Driven**:通过测试验证恢复能力
## Related Metrics
- [[RTO]]Recovery Time Objective恢复时间目标
- [[RPO]]Recovery Point Objective恢复点目标
## Related Concepts
- [[Self-Healing Systems]]:自愈系统
- [[SRE]]:站点可靠性工程
- [[Observability Engineering]]:可观测性工程
- [[Chaos Engineering]]:混沌工程