{"id":209561,"date":"2025-10-23T16:55:14","date_gmt":"2025-10-23T08:55:14","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209561\/"},"modified":"2025-10-23T16:55:15","modified_gmt":"2025-10-23T08:55:15","slug":"cdn-39","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209561\/","title":{"rendered":"CDN\u5f02\u6b65\u52a0\u8f7d\u4f18\u5316\uff1a\u63d0\u5347\u9996\u5c4f\u901f\u5ea6\u7684\u5b9e\u6218\u65b9\u6cd5"},"content":{"rendered":"<p>\u9996\u5c4f\u52a0\u8f7d\u901f\u5ea6\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3001\u641c\u7d22\u6392\u540d\u548c\u8f6c\u5316\u7387\u3002\u5bf9\u4e8e\u9762\u5411\u5168\u7403\u6216\u4e9a\u592a\u7528\u6237\u7684\u7f51\u7ad9\uff0c\u91c7\u7528\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5e76\u7ed3\u5408\u5f02\u6b65\u52a0\u8f7d\u7b56\u7565\uff0c\u662f\u63d0\u5347\u9996\u5c4f\u901f\u5ea6\u7684\u5173\u952e\u8def\u5f84\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u89e3\u6790CDN\u5f02\u6b65\u52a0\u8f7d\u7684\u539f\u7406\u3001\u5b9e\u6218\u65b9\u6cd5\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u5e76\u7ed3\u5408\u6d77\u5916\u8282\u70b9\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u90e8\u7f72\u573a\u666f\u7ed9\u51fa\u843d\u5730\u5efa\u8bae\u3002<\/p>\n<h2>\u539f\u7406\u4e0e\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u8ba8\u8bba\u5b9e\u6218\u4e4b\u524d\uff0c\u5148\u660e\u786e\u51e0\u4e2a\u6838\u5fc3\u6982\u5ff5\uff1a<\/p>\n<ul>\n<li><strong>\u9996\u5c4f\u6e32\u67d3\u5173\u952e\u94fe\uff08Critical Rendering Path\uff09<\/strong>\uff1a\u6d4f\u89c8\u5668\u4ece\u8bf7\u6c42HTML\u5230\u9996\u6b21\u53ef\u89c1\u5185\u5bb9\uff08First Contentful Paint\uff0cFCP\uff09\u6240\u7ecf\u5386\u7684\u8d44\u6e90\u83b7\u53d6\u4e0e\u89e3\u6790\u6b65\u9aa4\u3002\u4f18\u5316\u76ee\u6807\u662f\u7f29\u77ed\u5173\u952e\u94fe\u957f\u5ea6\u3002<\/li>\n<li><strong>\u5f02\u6b65\u52a0\u8f7d<\/strong>\uff1a\u5c06\u975e\u5173\u952e\u8d44\u6e90\u5ef6\u540e\u52a0\u8f7d\u6216\u5e76\u884c\u52a0\u8f7d\uff0c\u907f\u514d\u963b\u585eHTML\u89e3\u6790\u4e0e\u9996\u5c4f\u6e32\u67d3\u3002<\/li>\n<li><strong>CDN<\/strong>\uff1a\u901a\u8fc7\u5730\u7406\u5206\u5e03\u7684\u8282\u70b9\u7f13\u5b58\u9759\u6001\u8d44\u6e90\uff0c\u51cf\u5c11\u7f51\u7edc\u5ef6\u8fdf\u4e0e\u4e22\u5305\uff0c\u63d0\u5347\u5e76\u53d1\u4f7f\u7528\u4f53\u9a8c\u3002<\/li>\n<li><strong>\u8d44\u6e90\u63d0\u793a\uff08Resource Hints\uff09<\/strong>\uff1a\u5982 dns-prefetch\u3001preconnect\u3001prefetch\u3001preload\uff0c\u7528\u6765\u544a\u8bc9\u6d4f\u89c8\u5668\u63d0\u524d\u505aDNS\u89e3\u6790\u3001\u5efa\u7acb\u8fde\u63a5\u6216\u9884\u4e0b\u8f7d\u5173\u952e\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<h3>\u6d4f\u89c8\u5668\u52a0\u8f7d\u963b\u585e\u4e0e\u8d44\u6e90\u4f18\u5148\u7ea7<\/h3>\n<p>\u540c\u6b65\u7684\u5916\u90e8CSS\u4f1a\u963b\u585e\u6e32\u67d3\uff0c\u5916\u90e8\u540c\u6b65\u811a\u672c\u4f1a\u963b\u585eHTML\u89e3\u6790\u3002\u901a\u8fc7\u5c06CSS\u5173\u952e\u7247\u6bb5\u5185\u8054\u3001CSS\u6587\u4ef6\u4f7f\u7528<code>media<\/code>\u5c5e\u6027\u6216critical CSS\u63d0\u53d6\uff0c\u53ef\u7f29\u77ed\u963b\u585e\u65f6\u95f4\u3002\u5bf9\u4e8eJS\uff0c\u91c7\u7528<code>defer<\/code>\u6216<code>async<\/code>\uff0c\u5e76\u628a\u975e\u5fc5\u8981\u811a\u672c\u79fb\u52a8\u5230body\u672b\u5c3e\u6216\u52a8\u6001\u6309\u9700\u52a0\u8f7d\uff0c\u53ef\u663e\u8457\u63d0\u9ad8\u9996\u5c4f\u901f\u5ea6\u3002<\/p>\n<h2>\u5f02\u6b65\u52a0\u8f7d\u4e0eCDN\u7ed3\u5408\u7684\u5b9e\u6218\u65b9\u6cd5<\/h2>\n<p>\u4ee5\u4e0b\u4e3a\u53ef\u76f4\u63a5\u5728\u751f\u4ea7\u73af\u5883\u5b9e\u65bd\u7684\u6280\u672f\u6e05\u5355\uff0c\u6309\u4f18\u5148\u7ea7\u4e0e\u590d\u6742\u5ea6\u6392\u5217\u3002<\/p>\n<h3>1. \u63d0\u53d6\u5e76\u5185\u8054Critical CSS<\/h3>\n<ul>\n<li>\u4f7f\u7528\u5de5\u5177\uff08\u5982Penthouse\u3001Critical\uff09\u63d0\u53d6\u9996\u5c4f\u6240\u9700\u7684\u6700\u5c0fCSS\uff0c\u5185\u8054\u5230HTML\u5934\u90e8\uff0c\u907f\u514d\u9996\u6b21\u6e32\u67d3\u65f6\u53bb\u8bf7\u6c42\u5916\u90e8CSS\u6587\u4ef6\u3002<\/li>\n<li>\u5269\u4f59CSS\u4f7f\u7528\u7136\u540e\u5728\u52a0\u8f7d\u5b8c\u6210\u540e\u5207\u6362\u5230\uff0c\u6216\u8005\u8bbe\u7f6e<code>media=\"print\"<\/code>\u5e76\u5728\u52a0\u8f7d\u5b8c\u6210\u540e\u5207\u6362\u5230\u9ed8\u8ba4\u5a92\u4f53\u3002<\/li>\n<\/ul>\n<h3>2. \u5408\u7406\u4f7f\u7528 preload\/prefetch\/preconnect<\/h3>\n<ul>\n<li><strong>preconnect<\/strong>\uff1a\u63d0\u524d\u5efa\u7acb\u5230CDN\u6216\u7b2c\u4e09\u65b9\u57df\uff08\u5982\u5b57\u4f53\u3001API\uff09\u7684TCP\/TLS\u8fde\u63a5\uff0c\u51cf\u5c11\u63e1\u624b\u5ef6\u8fdf\uff0c\u9002\u7528\u4e8e\u5173\u952e\u7b2c\u4e09\u65b9\u8d44\u6e90\u3002<\/li>\n<li><strong>preload<\/strong>\uff1a\u7528\u4e8e\u5173\u952e\u9759\u6001\u8d44\u6e90\uff08\u9996\u5c4fCSS\u3001\u9996\u5c4f\u5173\u952e\u5b57\u4f53\u3001\u5173\u952e\u56fe\u7247\uff09\uff0c\u544a\u8bc9\u6d4f\u89c8\u5668\u4f18\u5148\u4e0b\u8f7d\u5e76\u4fdd\u7559\u5728\u8bf7\u6c42\u961f\u5217\u7684\u9ad8\u4f18\u5148\u7ea7\u3002<\/li>\n<li><strong>prefetch<\/strong>\uff1a\u7528\u4e8e\u4f4e\u4f18\u5148\u7ea7\u7684\u540e\u7eed\u9875\u9762\u6216\u8d44\u6e90\uff0c\u9002\u5408\u6e10\u8fdb\u5f0f\u52a0\u8f7d\u6216\u8def\u7531\u9884\u52a0\u8f7d\u3002<\/li>\n<\/ul>\n<h3>3. \u811a\u672c\u5f02\u6b65\u5316\u4e0e\u6a21\u5757\u5316\u52a0\u8f7d<\/h3>\n<ul>\n<li><code>async<\/code>\uff1a\u9002\u7528\u4e8e\u72ec\u7acb\u975e\u4f9d\u8d56\u811a\u672c\uff0c\u80fd\u5e76\u884c\u4e0b\u8f7d\u5e76\u5728\u5c31\u7eea\u65f6\u6267\u884c\uff0c\u4f46\u6267\u884c\u987a\u5e8f\u4e0d\u53ef\u63a7\u3002<\/li>\n<li><code>defer<\/code>\uff1a\u811a\u672c\u5728HTML\u89e3\u6790\u5b8c\u540e\u6309\u987a\u5e8f\u6267\u884c\uff0c\u9002\u5408\u6709\u4f9d\u8d56\u5173\u7cfb\u7684\u811a\u672c\u3002<\/li>\n<li>\u91c7\u7528ES Modules\u4e0e\u52a8\u6001import\uff0c\u5b9e\u73b0\u6309\u9700\u52a0\u8f7d\uff08code-splitting\uff09\uff0c\u51cf\u5c11\u9996\u5305\u4f53\u79ef\u3002<\/li>\n<\/ul>\n<h3>4. \u56fe\u7247\u548c\u5a92\u4f53\u7684\u5ef6\u540e\u52a0\u8f7d\uff08Lazy Loading\uff09<\/h3>\n<ul>\n<li>\u4f7f\u7528<code>loading=\"lazy\"<\/code>\u6216Intersection Observer API\u5728\u8fdb\u5165\u89c6\u53e3\u524d\u4e0d\u4e0b\u8f7d\u56fe\u7247\uff0c\u964d\u4f4e\u9996\u5c4f\u7f51\u7edc\u538b\u529b\u3002<\/li>\n<li>\u5bf9\u5173\u952e\u9996\u5c4f\u56fe\u7247\u4f7f\u7528\u9884\u52a0\u8f7d\uff08preload\uff09\u5e76\u5728CDN\u4e0a\u914d\u7f6e\u9002\u5f53\u7f13\u5b58\u4e0e\u538b\u7f29\uff08WebP\/AVIF\uff09\u3002<\/li>\n<\/ul>\n<h3>5. CDN\u914d\u7f6e\u4e0e\u8fb9\u7f18\u4f18\u5316<\/h3>\n<ul>\n<li>\u5f00\u542f\u538b\u7f29\uff08gzip\u3001Brotli\uff09\u5e76\u5728\u8fb9\u7f18\u8282\u70b9\u542f\u7528TLS\u7ec8\u6b62\u4ee5\u51cf\u5c11\u5f80\u8fd4\u65f6\u95f4\u3002Brotli\u5728\u6587\u672c\u8d44\u6e90\u4e0a\u7684\u538b\u7f29\u7387\u4f18\u4e8egzip\uff0c\u5bf9\u9996\u5c4fHTML\/CSS\/JS\u6548\u679c\u660e\u663e\u3002<\/li>\n<li>\u5229\u7528HTTP\/2\u6216HTTP\/3\uff08QUIC\uff09\u591a\u8def\u590d\u7528\u51cf\u5c11\u5e76\u53d1\u8fde\u63a5\u6210\u672c\uff0c\u5c24\u5176\u5728\u9ad8\u5ef6\u8fdf\u94fe\u8def\uff08\u6d77\u5916\u8bbf\u95ee\uff09\u4e0a\u6548\u679c\u663e\u8457\u3002<\/li>\n<li>\u542f\u7528Origin Shield\u6216Shield POP\u6765\u51cf\u5c11\u56de\u6e90\u538b\u529b\uff0c\u63d0\u5347\u8fb9\u7f18\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<li>\u5408\u7406\u8bbe\u7f6eCache-Control\u3001ETag\u3001Last-Modified\u4e0estale-while-revalidate\u7b56\u7565\uff0c\u4fdd\u8bc1\u8282\u70b9\u547d\u4e2d\u5e76\u5141\u8bb8\u56de\u6e90\u5f02\u6b65\u5237\u65b0\u3002<\/li>\n<\/ul>\n<h3>6. \u670d\u52a1\u7aef\u6e32\u67d3\uff08SSR\uff09\u4e0eEdge Rendering<\/h3>\n<p>\u5bf9\u4e8e\u9996\u5c4f\u5f3a\u4f9d\u8d56\u6570\u636e\u7684\u9875\u9762\uff0c\u4f7f\u7528SSR\u6216\u5728\u8fb9\u7f18\u8282\u70b9\u8fdb\u884c\u90e8\u5206\u6e32\u67d3\uff08Edge Side Rendering\uff09\u53ef\u7f29\u77ed\u9996\u5c4f\u65f6\u95f4\u3002\u914d\u5408CDN\u7f13\u5b58\u52a8\u6001\u6e32\u67d3\u7ed3\u679c\uff0c\u80fd\u663e\u8457\u63d0\u5347FCP\u548cTime to Interactive\uff08TTI\uff09\u3002<\/p>\n<h3>7. Service Worker\u4e0e\u9884\u7f13\u5b58<\/h3>\n<p>\u901a\u8fc7Service Worker\u5b9e\u73b0\u8d44\u6e90\u9884\u7f13\u5b58\u4e0e\u8bf7\u6c42\u62e6\u622a\uff08CacheFirst\u6216NetworkFirst\u7b56\u7565\uff09\uff0c\u53ef\u4ee5\u5728\u6b21\u8bbf\u6216\u79bb\u7ebf\u573a\u666f\u663e\u8457\u63d0\u5347\u9996\u5c4f\u54cd\u5e94\u3002\u6ce8\u610f\u9996\u6b21\u5b89\u88c5Service Worker\u4e5f\u9700\u505a\u597d\u56de\u9000\u903b\u8f91\uff0c\u907f\u514d\u7834\u574f\u9996\u6b21\u52a0\u8f7d\u4f53\u9a8c\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u6743\u8861<\/h2>\n<p>\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u4e0b\u5e94\u9009\u62e9\u4e0d\u540c\u7ec4\u5408\uff1a<\/p>\n<ul>\n<li>\u5185\u5bb9\u578b\u7ad9\u70b9\uff08\u6587\u7ae0\u3001\u535a\u5ba2\uff09\uff1a\u4f18\u5148\u5185\u8054Critical CSS\u3001\u5ef6\u540e\u52a0\u8f7d\u793e\u4ea4\u811a\u672c\u3001\u4f7f\u7528CDN\u7f13\u5b58\u9759\u6001\u8d44\u6e90\uff0c\u9999\u6e2fVPS\u6216\u65b0\u52a0\u5761\u670d\u52a1\u5668\u8fb9\u7f18\u8282\u70b9\u5bf9\u4e9a\u592a\u7528\u6237\u66f4\u53cb\u597d\u3002<\/li>\n<li>\u7535\u5546\u4e0e\u5e94\u7528\u578b\u7ad9\u70b9\uff1a\u9996\u5c4f\u9700\u5c55\u793a\u5546\u54c1\u4e0e\u4ea4\u4e92\uff0c\u63a8\u8350SSR\u6216Edge Rendering\uff0c\u5173\u952e\u8d44\u6e90\u9884\u52a0\u8f7d\uff0cCDN\u5e94\u8986\u76d6\u4e3b\u8981\u7528\u6237\u533a\u57df\uff08\u9999\u6e2f\u670d\u52a1\u5668+\u7f8e\u56fd\u670d\u52a1\u5668\u8282\u70b9\u7ed3\u5408\uff09\u3002<\/li>\n<li>\u56fd\u9645\u5316\u7ad9\u70b9\uff1a\u4f7f\u7528\u591a\u533a\u57df\u90e8\u7f72\uff08\u9999\u6e2f\u670d\u52a1\u5668\/\u7f8e\u56fd\u670d\u52a1\u5668\/\u65e5\u672c\u670d\u52a1\u5668\/\u97e9\u56fd\u670d\u52a1\u5668\u7b49\uff09\uff0c\u5e76\u5728\u6bcf\u4e2a\u533a\u57df\u4f7f\u7528\u5f53\u5730CDN 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