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