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Engineering 12 min read

Scaling Kubernetes Clusters in Production: Lessons Learned

ML
Marcus Lindström
VP of Engineering · June 20, 2026

At NovaTech, we manage over 10,000 Kubernetes clusters for our customers. Over the years, we've learned valuable lessons about what works and what doesn't when scaling K8s in production.

Lesson 1: Right-size Your Nodes

One of the most common mistakes is using nodes that are too small or too large. Right-sizing your nodes based on your workload patterns can reduce costs by 30-40%.

Lesson 2: Implement Proper Resource Limits

Always set resource requests and limits for your pods. Without them, a single misbehaving pod can take down your entire node.

Lesson 3: Use Horizontal Pod Autoscaler

HPA is your best friend for handling traffic spikes. Configure it based on both CPU and custom metrics for optimal results.

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