V2EX load shedding

Load Shedding

释义 Definition

load shedding:为防止系统崩溃或大范围故障而主动削减负载的措施。常见两类用法:

  1. 电力:在供电不足时,按计划或紧急实施分区/轮流停电(限电),以保护电网稳定。
  2. 计算机/网络:在流量或任务过载时,系统丢弃部分请求/数据或降低服务,以维持整体可用性。

发音 Pronunciation (IPA)

/lod d/

例句 Examples

The city announced load shedding to prevent a total blackout.
为防止全面停电,该市宣布实施轮流停电(限电)。

In a real-time streaming system, load shedding may drop low-priority events to keep latency stable during traffic spikes.
在实时流处理系统中,为在流量激增时保持延迟稳定,负载削减可能会丢弃低优先级事件。

词源 Etymology

该短语由 load(负载/负荷) + shedding(脱落、甩掉、去除)组成,字面意思是“把一部分负载甩掉”。最初常见于电力工程语境(在供需失衡时切除部分负荷),后来被借用到计算机系统中,表示在过载时主动丢弃部分工作以避免整体崩溃。

相关词 Related Words

文学与著名作品 Notable Works

  • Power System Stability and Control(Prabha Kundur)
  • Power System Analysis and Design(J. Duncan Glover, Mulukutla S. Sarma 等)
  • “Load Shedding in a Data Stream Management System”(Tatbul 等,学术论文,数据流系统中的负载削减)
  • Stream Processing with Apache Flink(相关章节讨论背压、限流与在压力下的取舍,常与 load shedding 并提)
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