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GKE adds native scale-to-zero and capacity buffers for restarting workloads

cloud.google.com by Eyal Yablonka, Scott Funkenhauser 5 min read Editor score 7/10

GKE 1.37 can scale workloads to zero replicas and restart them on capacity buffers when demand returns, positioning the feature against KEDA-based setups. It offers platform teams a way to cut idle compute without abandoning responsiveness.

What: GKE 1.37 adds native scaling of workloads to zero replicas and restarting them on capacity buffers when demand returns.
How: An AutoscalingMetric maps external Cloud Monitoring metrics into a signal path used by the HPA to scale workloads.
Why it matters: For sporadic workers, scaling to zero can stop idle compute use while retaining a path to restart when work arrives.

Cloud Monitoring metrics flow through AutoscalingMetric to the HPA, which scales the worker. Sketched from the article's own text.

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