{"id":209623,"date":"2025-10-23T19:17:36","date_gmt":"2025-10-23T11:17:36","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209623\/"},"modified":"2025-10-23T19:17:37","modified_gmt":"2025-10-23T11:17:37","slug":"cdn%e5%8a%a9%e5%8a%9b%e5%a4%9a%e8%af%ad%e8%a8%80%e7%bd%91%e7%ab%99%e6%8f%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209623\/","title":{"rendered":"CDN\u52a9\u529b\u591a\u8bed\u8a00\u7f51\u7ad9\u63d0\u901f\uff1a\u5b9e\u73b0\u79d2\u5f00\u4f53\u9a8c\u7684\u5173\u952e\u7b56\u7565"},"content":{"rendered":"<p>\u591a\u8bed\u8a00\u7f51\u7ad9\u9762\u5411\u5168\u7403\u7528\u6237\u65f6\uff0c\u5982\u4f55\u65e2\u4fdd\u8bc1\u5185\u5bb9\u6b63\u786e\u5448\u73b0\uff0c\u53c8\u80fd\u5b9e\u73b0\u201c\u79d2\u5f00\u201d\u7ea7\u522b\u7684\u8bbf\u95ee\u4f53\u9a8c\uff0c\u662f\u7ad9\u957f\u548c\u5f00\u53d1\u8005\u9762\u4e34\u7684\u5e38\u89c1\u6311\u6218\u3002\u57fa\u4e8e\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u7684\u4f18\u5316\u7b56\u7565\uff0c\u80fd\u591f\u540c\u65f6\u89e3\u51b3\u8de8\u5730\u57df\u5ef6\u8fdf\u3001\u7f13\u5b58\u6548\u7387\u4e0e\u5730\u57df\u5316\u5185\u5bb9\u5206\u53d1\u7b49\u95ee\u9898\u3002\u672c\u6587\u4ece\u539f\u7406\u3001\u5b9e\u8df5\u6280\u672f\u7ec6\u8282\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u4e0e\u4f20\u7edf\u52a0\u901f\u624b\u6bb5\u5bf9\u6bd4\u4ee5\u53ca\u9009\u8d2d\u5efa\u8bae\u7b49\u65b9\u9762\uff0c\u7cfb\u7edf\u8bb2\u89e3\u5982\u4f55\u501f\u52a9CDN\u4e3a\u591a\u8bed\u8a00\u7ad9\u70b9\u63d0\u901f\uff0c\u5e2e\u52a9\u4f60\u5728\u9999\u6e2f\u3001\u5317\u7f8e\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7b49\u5173\u952e\u8282\u70b9\u4e0a\u5b9e\u73b0\u63a5\u8fd1\u77ac\u65f6\u54cd\u5e94\u3002<\/p>\n<h2>CDN 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RTT\uff0c\u5c24\u5176\u5bf9\u6d77\u5916\u670d\u52a1\u5668\u8bbf\u95ee\u9999\u6e2f\u6216\u7f8e\u670d\u6709\u663e\u8457\u4f5c\u7528\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u73b0\u79d2\u5f00\u4f53\u9a8c\u7684\u6280\u672f\u7b56\u7565<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u7cfb\u5217\u53ef\u64cd\u4f5c\u7684\u6280\u672f\u7ec6\u8282\uff0c\u8986\u76d6\u524d\u7aef\u3001\u4f20\u8f93\u5c42\u5230 CDN \u914d\u7f6e\uff0c\u9002\u7528\u4e8e\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u5176\u4ed6\u5730\u533a\u8282\u70b9\u7684\u591a\u8bed\u8a00\u7ad9\u70b9\u3002<\/p>\n<h3>1. \u6b63\u786e\u5212\u5206\u8bed\u8a00\u57df\u4e0e\u7f13\u5b58\u7c92\u5ea6<\/h3>\n<ul>\n<li>\u4f7f\u7528\u72ec\u7acb\u57df\u540d\u6216\u5b50\u57df\uff08\u4f8b\u5982 en.example.com \/ zh-hk.example.com\uff09\u662f\u6700\u6e05\u6670\u7684\u65b9\u6848\uff0c\u4fbf\u4e8e CDN \u6839\u636e Host \u5934\u533a\u5206\u7f13\u5b58\u952e\uff0c\u63d0\u9ad8\u547d\u4e2d\u7387\u5e76\u5229\u4e8e SEO\u3002<\/li>\n<li>\u82e5\u4f7f\u7528\u540c\u4e00\u57df\u540d\u5e76\u901a\u8fc7\u8def\u5f84\u533a\u5206\uff08\/en\/ \/zh\/\uff09\uff0c\u52a1\u5fc5\u5728\u7f13\u5b58\u952e\u4e2d\u5305\u542b\u8def\u5f84\u5e76\u7981\u6b62\u57fa\u4e8e Cookie \u7684\u4e0d\u5fc5\u8981\u5206\u5272\u3002<\/li>\n<li>\u907f\u514d\u57fa\u4e8e Accept-Language \u7684\u8fb9\u7f18\u51b3\u7b56\u4f5c\u4e3a\u552f\u4e00\u65b9\u5f0f\uff0c\u56e0\u4e3a\u6d4f\u89c8\u5668\u9ed8\u8ba4 Accept-Language \u5e76\u4e0d\u603b\u662f\u51c6\u786e\uff0c\u4e14\u4f1a\u5bfc\u81f4 Vary \u589e\u5927\u7f13\u5b58\u5206\u7247\u3002<\/li>\n<\/ul>\n<h3>2. \u7f13\u5b58\u63a7\u5236\u4e0e\u4e00\u81f4\u6027\u7b56\u7565<\/h3>\n<ul>\n<li>\u9759\u6001\u8d44\u6e90\uff08JS\/CSS\/\u56fe\u7247\uff09\u4f7f\u7528 long-term \u7f13\u5b58\uff08Cache-Control: public, max-age=31536000, 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HTTP\/3\uff08QUIC\uff09\uff0c\u80fd\u663e\u8457\u964d\u4f4e\u8bf7\u6c42\u5e76\u53d1\u5ef6\u8fdf\u4e0e\u5934\u90e8\u5f00\u9500\uff0c\u5c24\u5176\u5728\u79fb\u52a8\u7f51\u7edc\u4e0e\u9ad8\u4e22\u5305\u73af\u5883\u4e0b\u6548\u679c\u660e\u663e\u3002<\/li>\n<li>\u542f\u7528 TLS session resumption\u3001OCSP stapling \u4e0e\u8f83\u65b0\u7684\u52a0\u5bc6\u5957\u4ef6\uff0c\u7f29\u77ed TLS \u63e1\u624b\u65f6\u95f4\u3002\u5bf9\u4e8e\u9999\u6e2fVPS \u6216\u65e5\u672c\u670d\u52a1\u5668\u7b49\u8de8\u57df\u8bbf\u95ee\uff0cTLS \u4f18\u5316\u80fd\u51cf\u5c11\u989d\u5916 RTT\u3002<\/li>\n<li>\u4f7f\u7528 Anycast \u4e0e\u5168\u7403 PoP \u5e03\u5c40\uff0c\u914d\u5408\u667a\u80fd\u8def\u7531\uff0c\u51cf\u5c11\u4ece\u7f8e\u670d\u6216\u65b0\u52a0\u5761\u670d\u52a1\u5668\u56de\u6e90\u7684\u8df3\u6570\u3002<\/li>\n<\/ul>\n<h3>4. \u538b\u7f29\u4e0e\u8d44\u6e90\u4f18\u5316<\/h3>\n<ul>\n<li>\u542f\u7528 Brotli \u6216 Gzip \u5bf9\u6587\u672c\u8d44\u6e90\u538b\u7f29\uff1bBrotli \u5728\u5927\u591a\u6570\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0a\u63d0\u4f9b\u66f4\u9ad8\u538b\u7f29\u6bd4\u3002<\/li>\n<li>\u5bf9\u56fe\u7247\u91c7\u7528 WebP \/ AVIF \u7b49\u73b0\u4ee3\u683c\u5f0f\uff0c\u5e76\u6309\u9700\u63d0\u4f9b\u4e0d\u540c\u5206\u8fa8\u7387\uff08responsive images\uff09\uff1b\u7ed3\u5408 CDNI \u6216\u56fe\u7247\u4f18\u5316\u670d\u52a1\u5b9e\u73b0\u8fb9\u7f18\u5b9e\u65f6\u8f6c\u6362\u3002<\/li>\n<li>\u5408\u5e76\u5173\u952e CSS\u3001\u5ef6\u8fdf\u52a0\u8f7d\u975e\u5173\u952e\u811a\u672c\u3001\u4f7f\u7528 preload \/ preconnect \u7b49 hint \u51cf\u5c11\u5173\u952e\u8d44\u6e90\u52a0\u8f7d\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<h3>5. \u591a\u8bed\u8a00\u8def\u7531\u4e0e\u8fb9\u7f18\u903b\u8f91<\/h3>\n<ul>\n<li>\u5728 CDN Edge \u5c42\u5b9e\u73b0\u7b80\u5355\u7684\u8bed\u8a00\u8def\u7531\uff1a\u4f8b\u5982\u57fa\u4e8e\u5b50\u57df\u6216\u8def\u5f84\u7684\u91cd\u5199\u4e0e\u91cd\u5b9a\u5411\uff0c\u4ee5\u51cf\u5c11\u5230\u6e90\u7ad9\u7684\u8df3\u8f6c\u3002<\/li>\n<li>\u4f7f\u7528\u8fb9\u7f18\u8ba1\u7b97\uff08Edge Functions \/ Workers\uff09\u5728 PoP \u5c42\u8fdb\u884c A\/B\u3001SSR \u6e32\u67d3\u6216 HTML \u7247\u6bb5\u62fc\u63a5\uff08Edge Side Includes, ESI\uff09\uff0c\u52a0\u901f\u52a8\u6001\u5185\u5bb9\u5bf9\u4e0d\u540c\u8bed\u8a00\u7684\u54cd\u5e94\u3002<\/li>\n<li>\u907f\u514d\u5728\u8fb9\u7f18\u5c42\u4f7f\u7528\u590d\u6742\u7684\u6570\u636e\u5e93\u6216\u4f1a\u8bdd\u903b\u8f91\uff0c\u63a8\u8350\u4f7f\u7528\u8f7b\u91cf KV \u5b58\u50a8\u6216\u7f13\u5b58\u5c42\u3002<\/li>\n<\/ul>\n<h3>6. 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