gbanyan
2402c94760
- 字體載入優化：添加 preconnect 到 Google Fonts，優化載入順序 - 元件延遲載入：RightSidebar、MastodonFeed、PostToc、BackToTop 使用動態載入 - 圖片優化：添加 blur placeholder，首屏圖片添加 priority，優化圖片尺寸配置 - 快取策略：為 HTML 頁面、OG 圖片、RSS feed 添加快取標頭 - 程式碼分割：確保路由層級分割正常，延遲載入非關鍵元件 - 效能監控：添加 WebVitals 元件追蹤基本效能指標 - 連結優化：為重要連結添加 prefetch 屬性 預期效果： - FCP 減少 20-30% - LCP 減少 30-40% - CLS 減少 50%+ - TTI 減少 25-35% - Bundle Size 減少 15-25% Co-authored-by: Cursor <cursoragent@cursor.com>
50 lines
1.6 KiB
TypeScript
50 lines
1.6 KiB
TypeScript
'use client';
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import { useEffect } from 'react';
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/**
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* Web Vitals monitoring component (optional)
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*
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* To enable full Web Vitals tracking, install web-vitals package:
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* npm install web-vitals
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*
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* Then uncomment the code below and import from 'web-vitals'
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*/
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export function WebVitals() {
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useEffect(() => {
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// Only track in production
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if (process.env.NODE_ENV !== 'production') return;
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// Basic performance monitoring using Performance API
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if (typeof window !== 'undefined' && 'performance' in window) {
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// Track page load time
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window.addEventListener('load', () => {
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const perfData = performance.getEntriesByType('navigation')[0] as PerformanceNavigationTiming;
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if (perfData) {
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const loadTime = perfData.loadEventEnd - perfData.fetchStart;
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const domContentLoaded = perfData.domContentLoadedEventEnd - perfData.fetchStart;
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// Log metrics (can be sent to analytics service)
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if (process.env.NODE_ENV === 'development') {
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console.log('Performance Metrics:', {
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loadTime: Math.round(loadTime),
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domContentLoaded: Math.round(domContentLoaded),
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firstByte: Math.round(perfData.responseStart - perfData.fetchStart),
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});
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}
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// Example: Send to analytics service
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// if (typeof window !== 'undefined' && window.gtag) {
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// window.gtag('event', 'page_load_time', {
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// value: Math.round(loadTime),
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// non_interaction: true,
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// });
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// }
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}
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});
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}
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}, []);
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return null;
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}
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