Knative Autoscaler
Knative has a built-in autoscaling feature that automatically scales the application pods based on the number of HTTP requests it receives. This will increase the pod count when there is increased demand and decrease the pod count when the demand decreases. The pod count will scale to zero when pods are idle and there are no incoming requests.
Knative uses two components, the autoscaler, and the activator, to achieve the previously mentioned functionality. These components are deployed as pods in the knative-serving
namespace, as you can see in the following snippet:
NAME                          READY   STATUS    RESTARTS   AGE activator-7c8b59d78-9kgk5     2/2     Running   0       ...