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wiki/concepts/KEDA.md
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wiki/concepts/KEDA.md
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title: "KEDA"
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type: concept
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tags: [Kubernetes, EKS, Auto-Scaling, Event-Driven]
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---
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## Description
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KEDA(Kubernetes Event-driven Autoscaling)是基于外部事件的 Kubernetes 工作负载扩缩容框架。它使用 ScaledObject CRD 定义扩缩容规则,支持从零副本启动,可发布指标供 HPA 使用。
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## Mechanism
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- 使用 ScaledObject 自定义资源定义
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- 支持多种外部事件源(消息队列、HTTP API、Azure Blob 等)
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- 可与 HPA 集成提供指标
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- 支持从零副本扩展
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## Use Cases
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- 基于消息队列深度自动扩缩容
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- 基于 HTTP 请求速率扩缩容
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- 事件驱动的工作负载
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## Related Concepts
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- [[HPA]]
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- [[Auto-scaling]]
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## Related Entities
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- [[EKS]]
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## Connections
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- [[KEDA]] ← integrates_with [[HPA]]
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- [[KEDA]] ← provides_metrics_for [[Auto-scaling]]
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