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深入淺出 Node.js 的事件迴圈(Event Loop) · Issue #3 ...
Node.js 為什麼需要 Event Loop? Node.js 是基於單線程(single-thread)架構,也就是只有一條執行緒在跑程式碼。 這樣的設計優點是簡單且節省資源,但缺點是如果遇到需要等待的操作(例如讀檔、網路請求),整個程式就會被「卡住」無法繼續。
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