Question

A team runs a stateless web API whose traffic spikes unpredictably during marketing campaigns. Each pod is already sized correctly for a single request stream, but the application cannot benefit from more CPU or memory per instance because it is single-threaded. The team wants the application to handle sudden bursts of concurrent users automatically. Which autoscaling approach best fits this situation?

Accepted Answer

Horizontal scaling — add more pod replicas as load increases

Answer

Vertical scaling — increase the CPU and memory allocated to each existing pod

Answer

Cluster scaling only — add more nodes without changing the workload

Answer

Manual scaling — have an operator adjust replicas before each campaign