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Aug 2, 2026 · Cloud Native

From Zero to Ten‑Million QPS: How to Reserve Resources for Guaranteed Capacity

The article explains how a noisy‑neighbor batch job can cripple a payment service at ten‑million‑QPS scale, then details five practical reservation techniques—quotas, reserved instances, isolation, priority preemption, and elastic prediction—while weighing their trade‑offs and showing how overcommit and offline mixing recover idle capacity for both high guarantee and high utilization.