V2EX single point of failure

Single Point of Failure

Definition / 定义

“单点故障”:指系统中某一个组件、环节或依赖一旦失效,就会导致整个系统停止运行、严重降级或关键功能不可用的风险点。常缩写为 SPOF

Pronunciation / 发音

/sl pnt v feljr/

Examples / 例句

The database is a single point of failure.
数据库是一个单点故障。

Without redundancy and failover, a single point of failure in the network can bring down the entire service during peak traffic.
如果没有冗余和故障切换,网络中的单点故障可能会在高峰流量时导致整个服务瘫痪。

Etymology / 词源

该短语由 single(单一的)+ point(点/环节)+ failure(故障/失效)组合而成,源自工程学、可靠性工程与系统设计领域,用来强调:系统如果把关键功能“集中”在某一个节点上,就会形成脆弱点,需要通过冗余、分布式设计或故障切换来避免。

Related Words / 相关词

Literary Works / 文学作品

  • Site Reliability Engineering: How Google Runs Production Systems(《站点可靠性工程》)
  • Designing Data-Intensive Applications(《数据密集型应用系统设计》)
  • The Phoenix Project(《凤凰项目》)
  • The Practice of System and Network Administration(《系统与网络管理实践》)
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