WPA

HelloTech

Dec 23, 2022 · Cloud Native

Design Principles and Implementation Details of Kubernetes Horizontal Pod Autoscaler and Custom Water Pod Autoscaler

The article explains Kubernetes’ built‑in Horizontal Pod Autoscaler, then details the custom Water Pod Autoscaler (WPA) that extends HPA with dual‑signal (load and SOA registration) detection, dual‑threshold scaling, noise filtering, configurable cooldown, frequency limits, tolerance buffers, and integrated alerting for reliable elastic scaling.