Files
nexus/wiki/concepts/SLI.md
2026-04-19 06:32:15 +08:00

28 lines
1003 B
Markdown
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
---
id: sli
title: "SLI服务等级指标"
type: concept
tags: [sre, reliability, metrics]
last_updated: 2026-04-19
---
## Definition
SLIService Level Indicator服务等级指标是可靠性的可量化度量指标用于衡量系统健康状态。
## Common SLIs
- **可用性**:成功请求占总请求的比例
- **延迟**:请求响应时间(如 P99 延迟)
- **错误率**:失败请求占总请求的比例
- **吞吐量**每秒处理的请求数QPS
## Usage
SLI 被 [[SLO服务等级目标]] 引用,用于测量服务是否达到预期可靠性水平。
## Relationship
- [[SLI服务等级指标]] ← measures ← [[SLO服务等级目标]]
- [[SLO服务等级目标]] ← derives ← [[Error Budget错误预算]]
- [[SLA服务等级协议]] ← based_on ← [[SLO服务等级目标]]
## References
- [[CTP Topic 41 NFR's and Error Budgets]] — SLI/SLO/SLA 体系详解
- [[SRE]] — 站点可靠性工程实践