Scale to zero
By default, Knative will scale down
Services) that did not get any requests after “30 seconds”.
This may cause cold-starts, as the deployment needs to be scaled up on Kubernetes. During this scale-up period, Knative holds onto the request and then proxies it to the ready Pods.
The global default scale-to-zero period (30s) currently cannot be overriden per-Service.
You can change global autoscaling
minScale annotation to set it >