Oct 7, 2026 · Backend Development

Cache Rebuild Evolution at 10M QPS: From Cold Start to Hot Standby

This article details the evolution of cache reconstruction strategies for ten-million-QPS systems, covering cold-start dangers, persistence recovery limits, tiered hot-data backfill, dual-cluster hot standby for second-level failover, shard-level background rebuild with singleflight, and multi-layer database protection during rebuilds, advocating making pre-warming a routine capability.

cache reconstructioncache warmingcold start

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Cache Rebuild Evolution at 10M QPS: From Cold Start to Hot Standby

Su San Talks Tech

Feb 12, 2024 · Backend Development

How to Warm Up Your Cache for High‑Concurrency Systems

Cache warming, a technique used in high‑concurrency systems to preload frequently accessed data before traffic spikes, improves hit rates, reduces latency, prevents cache breakdowns, and eases backend load, with methods ranging from startup loading and scheduled jobs to Spring Boot listeners, Redis tools, and Caffeine loaders.

Backend PerformanceCaffeineJava

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How to Warm Up Your Cache for High‑Concurrency Systems