Node.jsAdvanced
Node.js Event Loop Deep Dive
Duration: 30 minsSeptember 5, 2025
Node.js Event Loop
Node.js executes single-threaded JavaScript code asynchronously. Here are the Event Loop phases:
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← Back to Learning HubTimers Phase**: Executes setTimeout/setInterval callbacks. Pending Callbacks**: Executes I/O errors and system callbacks. Poll Phase**: Retrieves new I/O events. Check Phase**: Executes setImmediate callbacks.