Why Is HPA Scaling Slow
Recently, during a surge in business activity, we encountered a problem where the availability of our services decreased due to a sudden increase in resource usage caused by incoming traffic. There are various reasons for the unavailability of our services, and one of the direct causes is the sharp increase in resource usage when traffic surges, and the HPA does not scale in a timely manner.
This article aims to investigate this issue and primarily addresses it from three aspects:
- How slow is the scaling process?
- Why is the scaling process slow?
- What are the solutions to this problem?