Capacity Planning for Business Applications

Systems fail in sequence: usually database first, then queues, then compute. Load-test to learn your order; the fix differs per layer and so does its lead time.

Quarterly: actuals vs model, bottleneck retest after major changes, cost curve sanity. Capacity planning is a rhythm, not a document.

Skipping the discipline this article describes until an incident, audit, or stalled project forces it — every practice above is cheaper adopted early than retrofitted under pressure.