https://foojayio.github.io/website/today/author/zbynek-roubalik/Articles written by Zbyněk Roubalík on foojay.io - Friends of OpenJDKHugoen-usFri, 17 Jul 2026 08:02:07 +0000https://foojayio.github.io/website/today/warm-up-fast-run-lean-vertical-scaling-for-java-on-kubernetes-with-azul-prime-and-kedify/Fri, 17 Jul 2026 08:02:07 +0000https://foojayio.github.io/website/today/warm-up-fast-run-lean-vertical-scaling-for-java-on-kubernetes-with-azul-prime-and-kedify/<p>Autoscaling on Kubernetes has evolved significantly, but many production systems still rely on reactive scaling based on CPU and memory utilization. The issue is that resource metrics often lag behind real demand. By the time the CPU rises, users may already be experiencing unacceptable latency.</p> <p>For most real services, horizontal scaling should be driven by proactive workload signals such as request rate, concurrency, or queue depth, rather than raw CPU alone. To learn more about this, see <a href="https://kedify.io/resources/blog/autoscaling-delay-resource-based-hpa-vs-proactive-metrics" target="_blank" rel="noopener noreferrer">this post</a> on autoscaling delay and proactive metrics.</p>