What is KEDA?
Kubernetes Event-Driven Autoscaling — scales pods based on external event sources.
KEDA (Kubernetes Event-Driven Autoscaling) is a CNCF project that enables pods to scale based on external event sources — SQS queue depth, Kafka lag, Redis list length, HTTP request rate, cron schedules, and 60+ other scalers. KEDA extends HPA by providing custom metric adapters for these event sources. Crucially, KEDA can scale workloads to zero (no traffic = no pods), which isn't possible with standard HPA.
Deep Dive Guide
keda event driven autoscaling complete guide
More Kubernetes Terms
Admission Controller
A Kubernetes plugin that intercepts API requests before objects are persisted.
Auto Scaling
Automatically adjusting the number of compute resources based on demand.
ClusterIP
The default Kubernetes Service type that exposes a service on an internal cluster IP.
ConfigMap
A Kubernetes object for storing non-sensitive configuration data as key-value pairs.
Controller Manager
Kubernetes control plane component running control loops to maintain desired state.
CoreDNS
The default DNS server in Kubernetes clusters for service discovery.
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