Autoscaling a FastAPI Service with the Kubernetes HPA
The Kubernetes HPA scales pods from a metric, but its defaults thrash and lag under real load. How the control loop works, how to tune it, and where it breaks.
The Kubernetes HPA scales pods from a metric, but its defaults thrash and lag under real load. How the control loop works, how to tune it, and where it breaks.
A CPU-based HPA can't see a backed-up queue, so workers fall behind. How KEDA autoscales Kubernetes workers on queue depth, and where it breaks.