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Jun 29, 2026 · Operations

Backlog Digestion at Ten‑Million QPS: From Adding Machines to Intelligent Scheduling

The article dissects how to handle massive message backlog in ten‑million‑QPS systems, explaining why simply adding consumer machines fails, and walks through six evolutionary stages—from manual scaling and auto‑scaling to traffic tiering, consumer‑side optimizations, dynamic strategies, and AI‑driven intelligent scheduling—while highlighting design trade‑offs, pitfalls, and practical tooling.