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Rare Earth Juejin Tech Community
Rare Earth Juejin Tech Community
Oct 13, 2025 · Backend Development

How Arthas Saved a Double‑11 Sale: Debugging a Thread‑Pool Nightmare

During a Double‑11 promotion, a massive request timeout caused order success rates to plunge, but by using Arthas, jstack, and targeted code analysis, the team identified a non‑thread‑safe HashBiMap in a global cache, halted the outage, and implemented fixes to prevent future failures.

ArthasHashBiMapThread Pool
0 likes · 15 min read
How Arthas Saved a Double‑11 Sale: Debugging a Thread‑Pool Nightmare
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