What is Node.js clustering?

Built-in module to fork worker processes per CPU core, load-balancing traffic for high concurrency.

How do you implement graceful shutdown in Node.js?

Master sends shutdown signals; workers drain connections via server.close() before exiting, enabling zero-downtime deploys.

Absolutely—if you add self-healing respawns and rolling restarts, it turns single-thread chokes into scalable cash machines.

🗄️ Databases & Backend

こんな場面を想像してください：ブラックフライデーの深夜セールがスタート、3万人のユーザーがNode.jsサーバーに殺到、そしてぽん——ダウン。クラスタリングでこの悪夢を軽く乗り切れますが、正しく実装しないと意味がありません。

DevTools Feed Apr 03, 2026 1 min read 14 views

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#Black Friday scaling #Node.js clustering #graceful-shutdown #zero-downtime deploy

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Originally reported by dev.to