{"id":209579,"date":"2025-10-23T17:57:14","date_gmt":"2025-10-23T09:57:14","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209579\/"},"modified":"2025-10-23T17:57:15","modified_gmt":"2025-10-23T09:57:15","slug":"cdn-46","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209579\/","title":{"rendered":"\u7535\u5546\u7f51\u7ad9CDN\u52a0\u901f\u5b9e\u6218\uff1a\u63d0\u901f\u7b56\u7565\u3001\u4f18\u5316\u8981\u70b9\u4e0e\u907f\u5751\u6307\u5357"},"content":{"rendered":"<p>\u5728\u7535\u5546\u7f51\u7ad9\u4e2d\uff0c\u9875\u9762\u548c\u8d44\u6e90\u7684\u54cd\u5e94\u901f\u5ea6\u76f4\u63a5\u5f71\u54cd\u8f6c\u5316\u7387\u4e0e\u7528\u6237\u4f53\u9a8c\u3002\u968f\u7740\u6d41\u91cf\u5cf0\u503c\u548c\u5168\u7403\u7528\u6237\u5206\u5e03\u7684\u589e\u52a0\uff0c\u4ec5\u9760\u5355\u70b9\u6e90\u53ef\u80fd\u65e0\u6cd5\u6ee1\u8db3\u6027\u80fd\u4e0e\u53ef\u7528\u6027\u7684\u8981\u6c42\u3002CDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u6210\u4e3a\u7535\u5546\u52a0\u901f\u7684\u6838\u5fc3\u624b\u6bb5\u3002\u672c\u6587\u4ece\u539f\u7406\u5230\u5b9e\u6218\uff0c\u7ed3\u5408\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\uff0c\u5e2e\u52a9\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u5408\u7406\u89c4\u5212\u7535\u5546\u7ad9\u7684CDN\u52a0\u901f\u65b9\u6848\uff0c\u5e76\u63d0\u9192\u5e38\u89c1\u7684\u5751\u4f4d\u4e0e\u89c4\u907f\u7b56\u7565\u3002<\/p>\n<h2>CDN \u52a0\u901f\u7684\u57fa\u672c\u539f\u7406\u4e0e\u5173\u952e\u7ec4\u4ef6<\/h2>\n<p>CDN \u7684\u6838\u5fc3\u601d\u8def\u662f\u5c06\u9759\u6001\u6216\u53ef\u7f13\u5b58\u5185\u5bb9\u5206\u53d1\u5230\u9760\u8fd1\u7528\u6237\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u51cf\u5c11\u5f80\u8fd4\u5ef6\u8fdf\u5e76\u5206\u62c5\u6e90\u7ad9\u538b\u529b\u3002\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u4f9d\u8d56\u4ee5\u4e0b\u5173\u952e\u7ec4\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>\u8fb9\u7f18\u8282\u70b9\uff08Edge PoP\uff09\u4e0e Anycast DNS\uff1a<\/strong>\u901a\u8fc7 Anycast \u5c06\u7528\u6237\u8bf7\u6c42\u8def\u7531\u5230\u6700\u8fd1\u6216\u8d1f\u8f7d\u6700\u4f4e\u7684\u8282\u70b9\uff0c\u5173\u952e\u5728\u4e8e PoP \u7684\u5206\u5e03\u5bc6\u5ea6\u4e0e\u7f51\u7edc\u8d28\u91cf\uff0c\u9488\u5bf9\u4e9a\u592a\u7528\u6237\u4f18\u5148\u8003\u8651\u9999\u6e2f\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u548c\u65b0\u52a0\u5761\u670d\u52a1\u5668\u7b49\u8282\u70b9\u3002<\/li>\n<li><strong>\u7f13\u5b58\u7b56\u7565\uff08Cache Key\u3001TTL\u3001Cache-Control\uff09\uff1a<\/strong>\u7f13\u5b58\u51b3\u5b9a\u547d\u4e2d\u7387\u3002\u5408\u7406\u8bbe\u7f6e Cache-Control\uff08public\/max-age\uff09\u4e0e ETag\/Last-Modified \u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u547d\u4e2d\u7387\u3002\u5bf9\u4e8e\u5e26 query string \u7684\u8d44\u6e90\uff0c\u9700\u8981\u660e\u786e cache key \u7b56\u7565\uff08\u5305\u542b\u6216\u5ffd\u7565\u67e5\u8be2\u53c2\u6570\uff09\u3002<\/li>\n<li><strong>\u56de\u6e90\u7b56\u7565\u4e0e Origin Shield\uff1a<\/strong>Origin Shield \u53ef\u4ee5\u4f5c\u4e3a\u6e90\u7ad9\u4fdd\u62a4\u5c42\uff0c\u51cf\u5c11\u56de\u6e90\u6b21\u6570\u3002\u5728\u9ad8\u5e76\u53d1\u4fc3\u9500\u573a\u666f\uff08\u5982\u53cc11\uff09\u53ef\u663e\u8457\u51cf\u8f7b\u6e90\u7ad9\u538b\u529b\uff0c\u9002\u914d\u9999\u6e2fVPS\u6216\u7f8e\u56fdVPS\u4f5c\u4e3a\u4e2d\u95f4\u5c42\u4e5f\u662f\u5e38\u89c1\u505a\u6cd5\u3002<\/li>\n<li><strong>\u52a8\u6001\u4e0e\u9759\u6001\u5206\u79bb\uff1a<\/strong>\u5c06\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001JS\u3001CSS\uff09\u4ea4\u7531 CDN \u7f13\u5b58\uff0c\u52a8\u6001\u8bf7\u6c42\uff08\u4e0b\u5355\u3001\u652f\u4ed8\uff09\u8d70\u56de\u6e90\u6216\u4f7f\u7528\u77ed TTL \u7684\u8fb9\u7f18\u7f13\u5b58\uff0c\u907f\u514d\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u4f20\u8f93\u4f18\u5316\uff1a<\/strong>\u542f\u7528 HTTP\/2\u3001HTTP\/3\uff08QUIC\uff09\u3001TLS 0-RTT\u3001Brotli\/Gzip \u538b\u7f29\u3001\u8fde\u63a5\u590d\u7528\u7b49\u80fd\u5728\u4f20\u8f93\u5c42\u663e\u8457\u964d\u4f4e\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h2>\u7535\u5546\u573a\u666f\u4e0b\u7684\u5178\u578b\u5e94\u7528\u4e0e\u52a0\u901f\u7b56\u7565<\/h2>\n<h3>\u9759\u6001\u8d44\u6e90\u52a0\u901f\uff08\u56fe\u7247\u3001\u9759\u6001\u811a\u672c\u3001\u6837\u5f0f\u8868\uff09<\/h3>\n<ul>\n<li>\u56fe\u7247\u662f\u7535\u5546\u9875\u9762\u7684\u6d41\u91cf\u4e3b\u529b\uff0c\u4f7f\u7528 CDN \u63d0\u524d\u7f13\u5b58\u548c\u56fe\u50cf\u5904\u7406\uff08\u6309\u9700\u88c1\u526a\u3001WebP\/AVIF \u8f6c\u7801\uff09\u80fd\u663e\u8457\u51cf\u5c11\u5e26\u5bbd\u3002\u7ed3\u5408 <strong>\u7f13\u5b58\u5206\u5c42<\/strong>\uff1a\u8fb9\u7f18\u957f\u671f\u7f13\u5b58\uff0c\u56de\u6e90\u77ed\u671f\u5237\u65b0\u3002<\/li>\n<li>\u5bf9\u56fe\u7247\u542f\u7528\u6309\u9700\u538b\u7f29\u4e0e\u54cd\u5e94\u5f0f\u8d44\u6e90\uff08srcset\uff09\uff0c\u5e76\u5728 CDN \u5c42\u505a\u683c\u5f0f\u534f\u5546\uff08Accept header \u8f6c\u6362\u4e3a WebP\/AVIF\uff09\u3002<\/li>\n<li>\u5bf9\u4e8e JS\/CSS\uff0c\u91c7\u7528\u6307\u7eb9\u5316\uff08hash\uff09\u547d\u540d\uff0c\u914d\u5408\u957f TTL\uff0c\u53ef\u5b9e\u73b0\u9ad8\u547d\u4e2d\u7387\u4e0e\u5373\u65f6\u66f4\u65b0\uff08\u66f4\u6362\u6587\u4ef6\u540d\u65f6\u5f3a\u5236\u5931\u6548\uff09\u3002<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u9875\u9762\u4e0e SSR \u52a0\u901f<\/h3>\n<ul>\n<li>\u52a8\u6001\u6e32\u67d3\uff08\u5982\u5546\u54c1\u8be6\u60c5\u9875\uff09\u53ef\u4ee5\u91c7\u7528\u8fb9\u7f18\u8ba1\u7b97\uff08Edge Functions\/Workers\uff09\u6216\u5206\u5c42\u7f13\u5b58\uff08stale-while-revalidate\uff09\u6765\u63d0\u5347\u54cd\u5e94\u901f\u5ea6\u4e0e\u53ef\u7528\u6027\u3002<\/li>\n<li>\u77ed\u7f13\u5b58\uff08\u5982 5-30 \u79d2\uff09\u9002\u5408\u9ad8\u9891\u66f4\u65b0\u533a\u57df\uff08\u5e93\u5b58\u3001\u4ef7\u683c\uff09\uff0c\u5e76\u901a\u8fc7 Cache-Control: stale-if-error \u7b49\u964d\u4f4e\u56de\u6e90\u538b\u529b\u3002<\/li>\n<\/ul>\n<h3>\u652f\u4ed8\u4e0e\u5b89\u5168\u76f8\u5173\u8def\u5f84<\/h3>\n<ul>\n<li>\u652f\u4ed8\u3001\u767b\u5f55\u3001\u4e0b\u5355\u7b49\u654f\u611f\u63a5\u53e3\u5e94\u907f\u514d\u957f\u671f\u7f13\u5b58\uff0c\u5e76\u5f3a\u5236\u8d70 HTTPS\u3002\u5efa\u8bae\u4e0e WAF\u3001DDoS \u9632\u62a4\u8054\u52a8\uff0c\u4fdd\u8bc1\u9ad8\u5cf0\u671f\u53ef\u7528\u6027\u3002<\/li>\n<li>CDN \u53ef\u505a\u901f\u7387\u9650\u5236\uff08rate limiting\uff09\u4e0e Bot \u7ba1\u63a7\uff0c\u7ed3\u5408\u884c\u4e3a\u5206\u6790\u8bc6\u522b\u6076\u610f\u6d41\u91cf\u3002<\/li>\n<\/ul>\n<h2>\u6027\u80fd\u4f18\u5316\u8981\u70b9\uff1a\u4ece DNS \u5230\u7aef\u5230\u7aef\u4f20\u8f93<\/h2>\n<ul>\n<li><strong>\u4f4e\u5ef6\u8fdf DNS\uff1a<\/strong>DNS \u54cd\u5e94\u65f6\u95f4\u662f\u9996\u5c4f\u4f53\u9a8c\u7684\u4e00\u90e8\u5206\u3002\u91c7\u7528 Anycast DNS \u4e0e\u5408\u7406\u7684 TTL\uff08\u975e\u8fc7\u77ed\u4e5f\u975e\u8fc7\u957f\uff09\u80fd\u51cf\u5c11\u89e3\u6790\u5ef6\u8fdf\u5e76\u652f\u6301\u5feb\u901f\u5207\u6362\u6e90\u7ad9\u3002\u4f8b\u5982\u5728\u5168\u7403\u5e03\u7f72\u65f6\uff0c\u53ef\u5c06\u57df\u540d\u89e3\u6790\u8bb0\u5f55\u6839\u636e\u5730\u7406\u8def\u7531\u5206\u53d1\u81f3\u9999\u6e2f\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u3002<\/li>\n<li><strong>\u8fde\u63a5\u590d\u7528\u4e0e\u534f\u8bae\u5347\u7ea7\uff1a<\/strong>\u542f\u7528 HTTP\/2 \u6216 HTTP\/3 \u53ef\u4ee5\u63d0\u5347\u5e76\u53d1\u8d44\u6e90\u52a0\u8f7d\u6548\u7387\uff0c\u5c24\u5176\u5728\u79fb\u52a8\u7aef\u548c\u9ad8\u5ef6\u8fdf\u94fe\u8def\u4e0a\u6548\u679c\u660e\u663e\u3002<\/li>\n<li><strong>\u538b\u7f29\u4e0e\u4e8c\u8fdb\u5236\u683c\u5f0f\uff1a<\/strong>\u542f\u7528 Brotli\uff08\u4f18\u4e8e Gzip\uff09\u5bf9\u6587\u672c\u7c7b\u8d44\u6e90\u538b\u7f29\uff0c\u56fe\u50cf\u91c7\u7528\u73b0\u4ee3\u7f16\u7801\uff08WebP\/AVIF\uff09\uff0c\u5e76\u7ed3\u5408 CDN \u7684\u8fb9\u7f18\u8f6c\u7801\u80fd\u529b\u3002<\/li>\n<li><strong>\u9884\u8fde\u63a5\/\u9884\u52a0\u8f7d\uff1a<\/strong>\u5728 HTML \u4e2d\u5408\u7406\u4f7f\u7528 preconnect\u3001dns-prefetch\u3001preload \u6765\u51cf\u5c11\u5173\u952e\u8d44\u6e90\u7684\u63e1\u624b\u4e0e\u89e3\u6790\u65f6\u95f4\u3002<\/li>\n<li><strong>\u51cf\u5c11 Cookie \u5f71\u54cd\uff1a<\/strong>\u9759\u6001\u8d44\u6e90\u5e94\u7ed1\u5b9a\u5230\u4e0d\u5e26 Cookie \u7684\u5b50\u57df\u540d\uff08\u4f8b\u5982 static.example.com\uff09\uff0c\u907f\u514d\u6bcf\u6b21\u8bf7\u6c42\u643a\u5e26\u5197\u4f59 Cookie \u5bfc\u81f4\u5e26\u5bbd\u548c\u5904\u7406\u5f00\u9500\u3002<\/li>\n<\/ul>\n<h2>\u7f13\u5b58\u7b56\u7565\u7ec6\u5316\u4e0e\u5e38\u89c1\u5751<\/h2>\n<p>\u7f13\u5b58\u7b56\u7565\u8bbe\u8ba1\u4e0d\u597d\u4f1a\u5bfc\u81f4\u7528\u6237\u770b\u5230\u8fc7\u671f\u6570\u636e\u6216\u9891\u7e41\u56de\u6e90\u3002\u4e0b\u9762\u5217\u51fa\u5e38\u89c1\u9519\u8bef\u4e0e\u89c4\u907f\u529e\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u8bef\u628a\u52a8\u6001\u63a5\u53e3\u7f13\u5b58\u4e3a\u9759\u6001\uff1a<\/strong>\u5982\u5546\u54c1\u5e93\u5b58\u3001\u4ef7\u683c\u7b49\u4e0d\u5e94\u8bbe\u7f6e\u957f TTL\u3002\u89e3\u51b3\u65b9\u6cd5\uff1a\u4f7f\u7528\u66f4\u7cbe\u7ec6\u7684\u8def\u5f84\u5339\u914d\u5e76\u8bbe\u7f6e\u77ed TTL \u6216\u5b8c\u5168\u8d70\u56de\u6e90\u3002<\/li>\n<li><strong>\u7f13\u5b58\u952e\u672a\u8003\u8651 Query String\uff1a<\/strong>\u5f53\u7f13\u5b58\u952e\u5ffd\u7565\u67e5\u8be2\u53c2\u6570\u65f6\uff0c\u4f1a\u7834\u574f\u4f9d\u8d56 query \u7684\u5c55\u793a\u903b\u8f91\u3002\u5e94\u660e\u786e\u54ea\u4e9b\u53c2\u6570\u53c2\u4e0e cache-key\uff0c\u5e76\u5bf9 UTM\u3001session \u7b49\u53c2\u6570\u8fdb\u884c\u8fc7\u6ee4\u3002<\/li>\n<li><strong>\u7f13\u5b58\u66f4\u65b0\u7b56\u7565\u4e0d\u5f53\uff1a<\/strong>\u4ec5\u4f9d\u8d56 purge API \u9010\u6761\u6e05\u7406\u5728\u7206\u53d1\u6027\u7684\u4ea7\u54c1\u66f4\u65b0\u65f6\u4f1a\u5f88\u6162\u3002\u63a8\u8350\u4f7f\u7528\u7248\u672c\u5316\u8d44\u6e90\u540d\u3001\u6216\u5728\u90e8\u7f72\u6d41\u7a0b\u4e2d\u6279\u91cf\u66f4\u65b0\u8def\u5f84\u5e76\u7ed3\u5408 Origin Shield\u3002<\/li>\n<li><strong>\u8de8\u5730\u57df\u4e00\u81f4\u6027\u95ee\u9898\uff1a<\/strong>\u591a\u5730\u57df\u90e8\u7f72\uff08\u5982\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\uff09\u65f6\u56de\u6e90\u548c\u7f13\u5b58\u5931\u6548\u673a\u5236\u5fc5\u987b\u7edf\u4e00\uff0c\u907f\u514d\u56e0\u4e0d\u540c PoP \u914d\u7f6e\u5dee\u5f02\u5bfc\u81f4\u884c\u4e3a\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2>\u76d1\u63a7\u3001\u65e5\u5fd7\u4e0e\u6545\u969c\u6062\u590d<\/h2>\n<ul>\n<li><strong>\u8fb9\u7f18\u65e5\u5fd7\u4e0e\u5206\u6790\uff1a<\/strong>\u6536\u96c6\u8fb9\u7f18\u8bbf\u95ee\u65e5\u5fd7\u3001\u547d\u4e2d\u7387\u3001\u56de\u6e90\u91cf\u300195\/99 \u767e\u5206\u4f4d\u5ef6\u8fdf\u7b49\u6307\u6807\u3002\u901a\u8fc7\u8fd9\u4e9b\u6307\u6807\u53ef\u4ee5\u5b9a\u4f4d\u70ed\u70b9\u8d44\u6e90\u4e0e\u4f18\u5316\u70b9\u3002<\/li>\n<li><strong>\u5408\u89c4\u4e0e\u9690\u79c1\uff1a<\/strong>\u8de8\u5883\u8bbf\u95ee\u6d89\u53ca\u6570\u636e\u4e3b\u6743\u95ee\u9898\uff0c\u90e8\u7f72\u6d77\u5916\u8282\u70b9\uff08\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u9999\u6e2f\u670d\u52a1\u5668\uff09\u65f6\u9700\u8bc4\u4f30\u9690\u79c1\u5408\u89c4\u4e0e\u65e5\u5fd7\u5b58\u50a8\u7b56\u7565\u3002<\/li>\n<li><strong>\u6545\u969c\u6f14\u7ec3\uff1a<\/strong>\u5b9a\u671f\u505a\u6d41\u91cf\u5207\u6362\u6f14\u7ec3\uff08\u4f8b\u5982\u628a\u90e8\u5206\u6d41\u91cf\u5207\u56de\u9999\u6e2fVPS \u6216\u7f8e\u56fdVPS \u505a\u56de\u6e90\uff09\uff0c\u9a8c\u8bc1 Origin Shield \u4e0e\u56de\u9000\u7b56\u7565\u7684\u6709\u6548\u6027\u3002<\/li>\n<\/ul>\n<h2>\u591a CDN \u4e0e\u533a\u57df\u7b56\u7565\u9009\u62e9<\/h2>\n<p>\u5355\u4e00 CDN 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