V2EX error budget

Error Budget

定义 Definition

error budget(错误预算):在系统可靠性管理中,指在一段时间内可接受的失败/错误额度(如可用性下降、请求失败、延迟超标等的“允许量”)。常用于与 SLO(服务水平目标)配套:如果实际错误消耗未超出预算,就可以更积极地发布新功能;若预算耗尽,则优先稳定性与修复。

发音 Pronunciation (IPA)

/err bdt/

例句 Examples

Our error budget is almost used up this month, so we will slow down releases.
这个月我们的错误预算快用完了,所以我们会放慢发布节奏。

By tracking the error budget against the SLO, the team balanced feature launches with reliability work and avoided repeated outages.
通过跟踪相对于 SLO 的错误预算,团队在功能上线与可靠性工作之间取得平衡,避免了反复宕机。

词源 Etymology

这是一个现代工程管理术语,由 error(错误)+ budget(预算)构成的复合名词。它借用“预算”在财务中的含义,把“允许发生的错误/不可用”当作一种可度量、可分配、可消耗的资源,用于推动工程团队在“速度(迭代)”与“稳定(可靠性)”之间做决策与取舍。该用法在 SRE(站点可靠性工程)语境中尤为常见。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Site Reliability Engineering: How Google Runs Production Systems(《站点可靠性工程》)系统性提出并推广“error budget”作为发布节奏与可靠性治理的核心机制。
  • The Site Reliability Workbook(《SRE 工作手册》)以实践案例讲解如何设定 SLO、计算并使用错误预算指导运维与发布。
  • The DevOps Handbook(《DevOps 手册》)在持续交付与稳定性协作的讨论中引用与“错误预算/可靠性目标”相近的管理思想。
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