What is Auto Scaling?
Automatically adjusting the number of compute resources based on demand.
Auto Scaling automatically adds or removes compute resources (pods, nodes, VMs) in response to changing load. In Kubernetes, HPA scales pods horizontally, VPA adjusts pod resource requests vertically, and Cluster Autoscaler or Karpenter scales nodes. In AWS, Auto Scaling Groups manage EC2 fleet size. Effective auto scaling requires setting the right metrics, thresholds, cooldown periods, and min/max bounds.
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keda event driven autoscaling complete guide
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More Kubernetes Terms
Admission Controller
A Kubernetes plugin that intercepts API requests before objects are persisted.
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.
CRD (Custom Resource Definition)
A Kubernetes extension mechanism for defining custom object types.
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