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DevOps & Automation · Intermediate

Capacity Planning

Forecasting the compute, storage, and network resources a service needs to meet demand and SLOs.

Definition

Capacity planning combines organic growth forecasts, known events, load testing, and headroom for failures (N+1, N+2). In cloud environments it informs autoscaling limits, quotas, and reserved capacity purchases.

Example

Load testing shows each pod handles 200 RPS, so 15 pods are needed for 2,400 RPS peak plus N+2 redundancy.

Exam tip

Include redundancy headroom; sizing for exactly peak load leaves no tolerance for failure.

Related terms