{"id":209683,"date":"2025-10-23T20:44:56","date_gmt":"2025-10-23T12:44:56","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209683\/"},"modified":"2025-10-23T20:44:57","modified_gmt":"2025-10-23T12:44:57","slug":"cdn-91","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209683\/","title":{"rendered":"CDN\u52a0\u901f\u9ad8\u5e76\u53d1\u9875\u9762\uff1a\u67b6\u6784\u4f18\u5316\u4e0e\u5b9e\u6218\u653b\u7565"},"content":{"rendered":"<p>\u5728\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\uff0c\u9875\u9762\u6027\u80fd\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u4e0e\u4e1a\u52a1\u8f6c\u5316\u3002\u901a\u8fc7\u5408\u7406\u4f7f\u7528 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0-RTT\u3001\u591a\u8def\u590d\u7528\u7b49\uff0c\u964d\u4f4e\u8fde\u63a5\u5efa\u7acb\u4e0e\u4f20\u8f93\u5ef6\u8fdf\uff0c\u589e\u5f3a TLS \u6027\u80fd\u3002<\/li>\n<li><strong>\u538b\u7f29\u4e0e\u8d44\u6e90\u4f18\u5316<\/strong>\uff1aBrotli\/ gzip \u538b\u7f29\u3001\u56fe\u7247 WebP\/AVIF\u3001\u61d2\u52a0\u8f7d\u3001HTTP \u7f13\u5b58\u538b\u7f29\u53ef\u4ee5\u51cf\u5c11\u5e26\u5bbd\u4e0e\u52a0\u5feb\u9996\u5c4f\u6e32\u67d3\u3002<\/li>\n<\/ul>\n<h3>\u7f13\u5b58\u5931\u6548\u4e0e\u70ed\u70b9\u4fdd\u62a4<\/h3>\n<p>\u9ad8\u5e76\u53d1\u4e0b\u5e38\u89c1\u95ee\u9898\u662f\u201c\u7f13\u5b58\u96ea\u5d29\u201d\u4e0e\u201c\u70ed\u70b9\u51fb\u7a7f\u201d\u3002\u5e38\u89c1\u89e3\u51b3\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 <strong>\u7f13\u5b58\u9884\u70ed<\/strong> \u6216\u5b9a\u65f6\u4efb\u52a1\u4e3b\u52a8\u5237\u65b0\u5173\u952e\u9875\u9762\uff0c\u907f\u514d\u7a81\u53d1\u8bbf\u95ee\u5168\u90e8\u51fb\u7a7f\u56de\u6e90\u3002<\/li>\n<li>\u5f15\u5165 <strong>\u4e92\u65a5\u9501\uff08Mutex\uff09<\/strong> \u6216\u56de\u6e90\u9650\u6d41\u7b56\u7565\uff0c\u5f53\u7f13\u5b58\u8fc7\u671f\u4e14\u8bf7\u6c42\u91cf\u66b4\u589e\u65f6\u53ea\u5141\u8bb8\u5c11\u6570\u8bf7\u6c42\u56de\u6e90\u751f\u6210\u65b0\u7f13\u5b58\u3002<\/li>\n<li>\u5bf9\u8d85\u5927\u70ed\u5ea6\u8d44\u6e90\u4f7f\u7528\u957f TTL \u5e76\u7ed3\u5408\u5b9a\u5411\u5237\u65b0\u4ee5\u63a7\u5236\u4e00\u81f4\u6027\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u7b56\u7565<\/h2>\n<p>\u4e0d\u540c\u7c7b\u578b\u7684\u7f51\u7ad9\u5bf9 CDN \u7684\u8981\u6c42\u4e0d\u540c\u3002\u4ee5\u4e0b\u5217\u51fa\u5e38\u89c1\u573a\u666f\u4e0e\u5bf9\u5e94\u5b9e\u6218\u8981\u70b9\uff1a<\/p>\n<h3>\u9759\u6001\u8d44\u6e90\u5bc6\u96c6\u578b\u7ad9\u70b9\uff08\u5982\u4f01\u4e1a\u5b98\u7f51\u3001\u5a92\u4f53\u7ad9\uff09<\/h3>\n<ul>\n<li>\u5c06 JS\u3001CSS\u3001\u56fe\u7247\u3001\u5b57\u4f53\u7b49\u5168\u90e8\u4ea4\u7531 CDN \u6258\u7ba1\uff0c\u8bbe\u7f6e\u957f TTL\uff0c\u5e76\u901a\u8fc7\u7248\u672c\u5316\uff08query string \u6216\u6587\u4ef6\u540d\uff09\u5b9e\u73b0\u66f4\u65b0\u3002<\/li>\n<li>\u542f\u7528 Brotli \u538b\u7f29\u4e0e HTTP\/2 \u591a\u8def\u590d\u7528\uff0c\u51cf\u5c11\u8bf7\u6c42\u6570\u5e76\u538b\u7f29\u4f20\u8f93\u5185\u5bb9\u3002<\/li>\n<li>\u914d\u7f6e\u5408\u7406\u7684\u7f13\u5b58 Key\uff0c\u907f\u514d\u56e0\u4e3a Cookie \u6216\u52a8\u6001\u53c2\u6570\u5bfc\u81f4\u7f13\u5b58\u5931\u6548\u3002<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u9875\u9762\u4e0e API \u9ad8\u5e76\u53d1<\/h3>\n<ul>\n<li>\u5bf9\u53ef\u7f13\u5b58\u7684 API \u54cd\u5e94\u4f7f\u7528\u8fb9\u7f18\u7f13\u5b58\uff08Edge Cache\uff09\uff0c\u8bbe\u7f6e\u57fa\u4e8e\u7528\u6237\u89d2\u8272\u6216\u8bf7\u6c42\u5934\u7684\u7f13\u5b58\u5206\u5c42\u3002<\/li>\n<li>\u5bf9\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\u7684\u63a5\u53e3\u4f7f\u7528\u77ed TTL \u5e76\u7ed3\u5408 ETag\/If-Modified-Since \u6765\u51cf\u5c11\u6570\u636e\u4f20\u8f93\u3002<\/li>\n<li>\u5fc5\u8981\u65f6\u5f15\u5165 Edge Compute\uff08\u8fb9\u7f18\u51fd\u6570\uff09\u5728\u8fb9\u7f18\u8282\u70b9\u505a\u90e8\u5206\u52a8\u6001\u6e32\u67d3\u6216\u9274\u6743\uff0c\u51cf\u5c11\u56de\u6e90\u9891\u7387\u3002<\/li>\n<\/ul>\n<h3>\u89c6\u9891\u3001\u4e0b\u8f7d\u7c7b\u5927\u6d41\u91cf\u573a\u666f<\/h3>\n<ul>\n<li>\u4f7f\u7528\u5206\u7247\u4e0a\u4f20\/\u4e0b\u8f7d\u4e0e\u65ad\u70b9\u7eed\u4f20\u652f\u6301\uff1b\u63a5\u5165\u6d41\u5a92\u4f53\u52a0\u901f\u3001HLS\/DASH \u7684\u8fb9\u7f18\u5206\u53d1\u3002<\/li>\n<li>\u7ed3\u5408\u5e26\u5bbd\u8ba1\u8d39\u4f18\u5316\u56de\u6e90\u7b56\u7565\uff0c\u4f7f\u7528\u5730\u7406\u5c31\u8fd1\u5206\u53d1\u964d\u4f4e\u56fd\u9645\u94fe\u8def\u6210\u672c\uff0c\u5c24\u5176\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u8282\u70b9\u8f83\u591a\u65f6\u663e\u8457\u63d0\u5347\u4e9a\u6d32\u7528\u6237\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<h2>\u67b6\u6784\u4f18\u5316\u7ec6\u8282\uff1a\u6e90\u7ad9\u3001DNS \u4e0e\u8d1f\u8f7d\u5747\u8861<\/h2>\n<p>\u4ec5\u9760 CDN \u8fd8\u4e0d\u8db3\u4ee5\u4fdd\u8bc1\u9ad8\u5e76\u53d1\u7a33\u5b9a\u6027\uff0c\u6e90\u7ad9\u4e0e DNS \u4e5f\u9700\u540c\u6b65\u4f18\u5316\u3002<\/p>\n<h3>\u6e90\u7ad9\u53ef\u7528\u6027\u4e0e\u5bb9\u91cf\u89c4\u5212<\/h3>\n<ul>\n<li>\u90e8\u7f72\u591a\u673a\u623f\u6216\u591a\u533a\u57df\u6e90\u7ad9\uff1a\u4f8b\u5982\u9999\u6e2f\u670d\u52a1\u5668\u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\u6df7\u5408\u90e8\u7f72\u53ef\u4ee5\u63d0\u9ad8\u8de8\u533a\u57df\u5197\u4f59\u4e0e\u6027\u80fd\uff1b\u91c7\u7528\u9999\u6e2fVPS \u6216\u7f8e\u56fdVPS \u53ef\u4ee5\u4f5c\u4e3a\u8f7b\u91cf\u7ea7\u56de\u6e90\u8282\u70b9\u3002<\/li>\n<li>\u4f7f\u7528\u53cd\u5411\u4ee3\u7406\uff08Nginx\/Envoy\uff09\u4e0e\u7f13\u5b58\u5c42\uff08Varnish\u3001Redis\uff09\u5728\u6e90\u7ad9\u672c\u5730\u505a\u4e8c\u7ea7\u7f13\u5b58\uff0c\u51cf\u5c11\u52a8\u6001\u56de\u6e90\u538b\u529b\u3002<\/li>\n<li>\u76d1\u63a7\u8fde\u63a5\u6570\u3001\u54cd\u5e94\u65f6\u95f4\u3001\u9519\u8bef\u7387\uff0c\u7ed3\u5408\u81ea\u52a8\u6269\u7f29\u5bb9\u7b56\u7565\uff0c\u907f\u514d\u6e90\u7ad9\u6210\u4e3a\u7cfb\u7edf\u74f6\u9888\u3002<\/li>\n<\/ul>\n<h3>DNS \u4e0e\u6d41\u91cf\u8c03\u5ea6<\/h3>\n<ul>\n<li>\u91c7\u7528 GeoDNS \u6216\u667a\u80fd\u89e3\u6790\u5c06\u7528\u6237\u5bfc\u5411\u6700\u8fd1\u7684 CDN \u8fb9\u7f18\u6216\u5c31\u8fd1\u6e90\u7ad9\uff0c\u4f18\u5316\u8de8\u56fd\u8bbf\u95ee\u4f53\u9a8c\uff08\u4f8b\u5982\u9488\u5bf9\u65b0\u52a0\u5761\u670d\u52a1\u5668\u6216\u65e5\u672c\u670d\u52a1\u5668\u7528\u6237\u505a\u5730\u57df\u4f18\u5148\uff09\u3002<\/li>\n<li>\u914d\u7f6e\u5065\u5eb7\u68c0\u67e5\u4e0e\u81ea\u52a8\u5207\u6362\u673a\u5236\uff0c\u5f53\u67d0\u4e00\u673a\u623f\u4e0d\u53ef\u7528\u65f6\u80fd\u5c06\u89e3\u6790\u5207\u6362\u5230\u5907\u4efd\u8282\u70b9\uff0c\u4fdd\u8bc1\u4e1a\u52a1\u8fde\u7eed\u6027\u3002<\/li>\n<\/ul>\n<h2>\u6027\u80fd\u76d1\u63a7\u4e0e\u6307\u6807\u4f18\u5316<\/h2>\n<p>\u90e8\u7f72\u5b8c\u6bd5\u540e\uff0c\u5fc5\u987b\u901a\u8fc7\u6307\u6807\u6301\u7eed\u4f18\u5316\uff1a<\/p>\n<ul>\n<li>\u5173\u952e\u76d1\u63a7\u6307\u6807\uff1aCache Hit Ratio\uff08\u7f13\u5b58\u547d\u4e2d\u7387\uff09\u3001TTFB\uff08\u9996\u5b57\u8282\u65f6\u95f4\uff09\u3001P95\/P99 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rel=\"noopener\">https:\/\/server.hk\/server.php<\/a>\u3002\u5982\u9700\u4e86\u89e3\u66f4\u591a\u670d\u52a1\u548c\u57df\u540d\u6ce8\u518c\u3001\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u7b49\u8d44\u6e90\uff0c\u4e5f\u53ef\u8bbf\u95ee\u4e3b\u7ad9\uff1a<a href=\"https:\/\/server.hk\/\" target=\"_blank\" 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