{"id":209633,"date":"2025-10-23T19:38:29","date_gmt":"2025-10-23T11:38:29","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209633\/"},"modified":"2025-10-23T19:38:31","modified_gmt":"2025-10-23T11:38:31","slug":"cdn-69","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209633\/","title":{"rendered":"CDN\u8ba9\u9996\u5c4f\u79d2\u5f00\uff1a\u5b9e\u6218\u4f18\u5316\u7b56\u7565\u89e3\u6790"},"content":{"rendered":"<p>\u5bf9\u4e8e\u9762\u5411\u5168\u7403\u7528\u6237\u7684\u7f51\u7ad9\uff0c\u5c24\u5176\u662f\u4f01\u4e1a\u7ad9\u3001\u5a92\u4f53\u548c\u7535\u5546\uff0c\u9996\u5c4f\u4f53\u9a8c\u76f4\u63a5\u5173\u7cfb\u5230\u7528\u6237\u7559\u5b58\u548c\u8f6c\u5316\u7387\u3002\u672c\u6587\u4ece\u6280\u672f\u539f\u7406\u548c\u5b9e\u8df5\u89d2\u5ea6\uff0c\u8be6\u7ec6\u89e3\u6790\u5982\u4f55\u501f\u52a9CDN\u5b9e\u73b0\u201c\u9996\u5c4f\u79d2\u5f00\u201d\u7684\u76ee\u6807\uff0c\u5e76\u7ed9\u51fa\u591a\u573a\u666f\u4e0b\u7684\u4f18\u5316\u7b56\u7565\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u9002\u5408\u7ad9\u957f\u3001\u5f00\u53d1\u8005\u548c\u4f01\u4e1a\u8fd0\u7ef4\u53c2\u8003\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48CDN\u80fd\u663e\u8457\u63d0\u5347\u9996\u5c4f\u52a0\u8f7d\u901f\u5ea6\uff08\u539f\u7406\u89e3\u6790\uff09<\/h2>\n<p>CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u7684\u6838\u5fc3\u4ef7\u503c\u5728\u4e8e\u628a\u9759\u6001\u6216\u52a8\u6001\u5185\u5bb9\u7f13\u5b58\u5728\u8ddd\u79bb\u7528\u6237\u66f4\u8fd1\u7684\u8fb9\u7f18\u8282\u70b9\uff08POP\uff09\uff0c\u51cf\u5c11\u7f51\u7edc\u5f80\u8fd4\u65f6\u5ef6\uff08RTT\uff09\u548c\u4e22\u5305\u91cd\u8bd5\u3002\u5b9e\u73b0\u9996\u5c4f\u79d2\u5f00\u7684\u5173\u952e\u5728\u4e8e\u7f29\u77ed\u9996\u4e2a\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u4e0e\u51cf\u5c11\u6e32\u67d3\u963b\u585e\u8d44\u6e90\u3002<\/p>\n<h3>\u5173\u952e\u6280\u672f\u70b9<\/h3>\n<ul>\n<li><strong>Anycast\u4e0e\u5c31\u8fd1\u8def\u7531\uff1a<\/strong>\u901a\u8fc7Anycast IP\uff0c\u540c\u4e00IP\u5728\u4e0d\u540cPOP\u88ab\u8def\u7531\u5230\u6700\u8fd1\u8282\u70b9\uff0c\u964d\u4f4eDNS\u89e3\u6790\u5230\u4f20\u8f93\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u7f13\u5b58\u547d\u4e2d\u4e0e\u56de\u6e90\u7b56\u7565\uff1a<\/strong>\u5229\u7528cache-control\u3001Expires\u3001ETag\u7b49\u5934\u914d\u7f6e\uff0c\u914d\u5408\u667a\u80fd\u56de\u6e90\uff08origin pull \/ push\uff09\uff0c\u63d0\u5347\u8fb9\u7f18\u547d\u4e2d\u7387\uff0c\u51cf\u5c11\u56de\u6e90\u8bf7\u6c42\u3002<\/li>\n<li><strong>\u534f\u8bae\u5c42\u4f18\u5316\uff1a<\/strong>\u652f\u6301HTTP\/2\u6216HTTP\/3\uff08QUIC\uff09\u53ef\u5e76\u884c\u4f20\u8f93\u3001\u51cf\u5c11TCP\/TLS\u63e1\u624b\u5ef6\u8fdf\uff0c\u542f\u75280-RTT\u4e0eTLS\u4f1a\u8bdd\u6062\u590d\u8fdb\u4e00\u6b65\u7f29\u77ed\u9996\u5305\u65f6\u95f4\u3002<\/li>\n<li><strong>\u538b\u7f29\u4e0e\u4f20\u8f93\u4f18\u5316\uff1a<\/strong>Brotli\u6216gzip\u538b\u7f29\u3001\u56fe\u7247WebP\/AVIF\u3001\u54cd\u5e94\u4f53\u5206\u5757\u4f20\u8f93\u3001\u5185\u5bb9\u5206\u7247\u4e0eCDN\u5e76\u53d1\u8fde\u63a5\u63a7\u5236\u3002<\/li>\n<li><strong>\u667a\u80fd\u8def\u7531\u4e0e\u8d1f\u8f7d\u5747\u8861\uff1a<\/strong>\u57fa\u4e8e\u5065\u5eb7\u68c0\u67e5\u4e0e\u5b9e\u65f6\u94fe\u8def\u8d28\u91cf\u7684\u8c03\u5ea6\uff0c\u907f\u514d\u5c06\u8bf7\u6c42\u8def\u7531\u5230\u62e5\u585e\u6216\u8de8\u56fd\u94fe\u8def\u8fc7\u957f\u7684\u8282\u70b9\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u4f18\u5316\u7b56\u7565\uff1a\u4ece\u8d44\u6e90\u51c6\u5907\u5230\u90e8\u7f72\u843d\u5730<\/h2>\n<p>\u4e0b\u9762\u6309\u5b9e\u65bd\u6d41\u7a0b\u5217\u51fa\u53ef\u64cd\u4f5c\u7684\u4f18\u5316\u70b9\uff0c\u5305\u542b\u524d\u7aef\u3001\u7f51\u7edc\u4e0eCDN\u914d\u7f6e\u4e09\u5927\u5c42\u9762\u3002<\/p>\n<h3>\u524d\u7aef\u4f18\u5148\uff1a\u51cf\u5c0f\u963b\u585e\u5e76\u63d0\u524d\u6e32\u67d3<\/h3>\n<ul>\n<li>Critical CSS\uff1a\u628a\u5173\u952e\u6837\u5f0f\u5185\u8054\u5230\u9996\u5c4fHTML\u4e2d\uff0c\u5ef6\u8fdf\u52a0\u8f7d\u975e\u5173\u952eCSS\uff08<code>media=\"print\" onload<\/code> \u6216\u52a8\u6001\u63d2\u5165\uff09\u3002<\/li>\n<li>\u8d44\u6e90\u9884\u52a0\u8f7d\uff1a\u4f7f\u7528 <code>&lt;link rel=\"preload\"&gt;<\/code> \u9884\u8f7d\u5173\u952e\u5b57\u4f53\u3001Hero\u56fe\u4e0e\u9996\u5c4f\u811a\u672c\uff0c\u6216\u8005 <code>preconnect<\/code> \u5230\u7b2c\u4e09\u65b9\u57df\u540d\uff08\u5982\u5b57\u4f53\u3001API\uff09\u3002<\/li>\n<li>\u5b57\u4f53\u4f18\u5316\uff1a\u5b57\u4f53\u91c7\u7528\u5b50\u96c6\uff08subset\uff09\u5e76\u8bbe\u7f6e <code>font-display: swap<\/code>\uff0c\u907f\u514d\u5b57\u4f53\u963b\u585e\u6e32\u67d3\u3002<\/li>\n<li>\u56fe\u7247\u4f18\u5316\uff1a\u9996\u5c4f\u56fe\u7247\u4f7f\u7528\u7cbe\u7b80\u5c3a\u5bf8\u3001WebP\/AVIF\uff0c\u6309\u9700\u52a0\u8f7d\u4e0b\u65b9\u56fe\u7247\uff08lazyload\uff09\uff0c\u5e76\u8003\u8651LQIP\u6216SVG\u5360\u4f4d\u3002<\/li>\n<li>\u51cf\u5c11\u963b\u585e\u811a\u672c\uff1a\u628a\u7b2c\u4e09\u65b9\u811a\u672c\uff08\u5206\u6790\u3001\u5e7f\u544a\uff09\u5f02\u6b65\u6216\u5ef6\u8fdf\u52a0\u8f7d\uff0c\u5c3d\u91cf\u5c06\u5173\u952eJS\u505a\u62c6\u5206\uff08code-splitting\uff09\u3002<\/li>\n<\/ul>\n<h3>\u7f51\u7edc\u4e0eCDN\u914d\u7f6e\uff1a\u63d0\u9ad8\u8fb9\u7f18\u6548\u7387<\/h3>\n<ul>\n<li>\u5f00\u542fHTTP\/2\u6216HTTP\/3\uff1a\u4f18\u5148\u4f7f\u7528HTTP\/3\uff08QUIC\uff09\u4ee5\u51cf\u5c11\u63e1\u624b\u548c\u961f\u5934\u963b\u585e\u3002<\/li>\n<li>\u5408\u7406\u8bbe\u7f6e\u7f13\u5b58\u5934\uff1a\u9759\u6001\u8d44\u6e90\u957f\u7f13\u5b58\uff08max-age=31536000 + \u6587\u4ef6\u6307\u7eb9\uff09\uff0c\u5bf9\u52a8\u6001\u5185\u5bb9\u4f7f\u7528\u5408\u7406\u7684\u7f13\u5b58\u7b56\u7565\u548c <code>stale-while-revalidate<\/code> \u4ee5\u4fdd\u8bc1\u54cd\u5e94\u53ca\u65f6\u3002<\/li>\n<li>Cookie \u7b56\u7565\uff1a\u5bf9\u9759\u6001\u8d44\u6e90\u4f7f\u7528\u65e0Cookie\u57df\u540d\u6216\u5c06Cookie\u4ece\u8d44\u6e90\u8bf7\u6c42\u4e2d\u5265\u79bb\uff0c\u51cf\u5c11\u8bf7\u6c42\u4f53\u79ef\u3002<\/li>\n<li>\u8fb9\u7f18\u538b\u7f29\u4e0e\u56fe\u7247\u5904\u7406\uff1a\u5728CDN\u8fb9\u7f18\u542f\u7528Brotli\u548c\u81ea\u52a8\u56fe\u7247\u683c\u5f0f\u8f6c\u6362\/\u538b\u7f29\u529f\u80fd\u3002<\/li>\n<li>\u667a\u80fd\u9884\u70ed\u4e0eAPI\u7f13\u5b58\uff1a\u5bf9\u9ad8\u9891\u8bbf\u95ee\u63a5\u53e3\u4f7f\u7528\u8fb9\u7f18\u7f13\u5b58\u6216\u7070\u5ea6\u9884\u70ed\uff0c\u907f\u514d\u51b7\u542f\u52a8\u65f6\u56de\u6e90\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>\u56de\u6e90\u4e0e\u5b89\u5168\uff1a\u5e73\u8861\u6027\u80fd\u4e0e\u4e00\u81f4\u6027<\/h3>\n<ul>\n<li>\u56de\u6e90\u8fde\u63a5\u4f18\u5316\uff1a\u5f00\u542fHTTP\u6301\u4e45\u8fde\u63a5\u3001\u51cf\u5c11TLS\u63e1\u624b\u6b21\u6570\u3001\u4f7f\u7528Keep-Alive\u548c\u5408\u9002\u7684\u56de\u6e90\u5e26\u5bbd\u3002<\/li>\n<li>\u7f13\u5b58\u4e00\u81f4\u6027\u7b56\u7565\uff1a\u4f7f\u7528Etag\u3001Last-Modified\u914d\u5408\u5408\u7406TTL\uff0c\u5fc5\u8981\u65f6\u4f7f\u7528\u57fa\u4e8eURL\u53c2\u6570\u7684\u7f13\u5b58\u5206\u6bb5\u6216Purging 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Workers \/ Functions\uff09\u3002\u6e90\u7ad9\u591a\u5730\u57df\u5197\u4f59\uff08\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u7f8e\u56fd\u7b49\uff09\u3002<\/li>\n<li>\u4f18\u52bf\uff1a\u5bb9\u707e\u4e0e\u5feb\u901f\u6062\u590d\uff0c\u7528\u6237\u4f53\u9a8c\u7a33\u5b9a\u4e14\u53ef\u9884\u6d4b\u3002<\/li>\n<\/ul>\n<h2>\u9009\u8d2d\u5efa\u8bae\uff1a\u5982\u4f55\u6311\u9009CDN\u53ca\u6e90\u7ad9\u670d\u52a1<\/h2>\n<p>\u9009\u8d2d\u65f6\u65e2\u8981\u770b\u6280\u672f\u80fd\u529b\uff0c\u4e5f\u8981\u8003\u91cf\u90e8\u7f72\u4e0e\u8fd0\u7ef4\u6210\u672c\u3002<\/p>\n<h3>\u5173\u952e\u8bc4\u4f30\u6307\u6807<\/h3>\n<ul>\n<li><strong>\u8282\u70b9\u8986\u76d6\u4e0eAnycast\u80fd\u529b\uff1a<\/strong>\u662f\u5426\u5728\u76ee\u6807\u5e02\u573a\uff08\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u3001\u7f8e\u56fd\uff09\u6709\u8db3\u591fPOP\u3002<\/li>\n<li><strong>\u534f\u8bae\u652f\u6301\uff1a<\/strong>\u662f\u5426\u652f\u6301HTTP\/2\u3001HTTP\/3\u3001TLS 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