{"id":209607,"date":"2025-10-23T19:04:34","date_gmt":"2025-10-23T11:04:34","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209607\/"},"modified":"2025-10-23T19:04:35","modified_gmt":"2025-10-23T11:04:35","slug":"cdn-59","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209607\/","title":{"rendered":"CDN\uff1a\u8de8\u5883\u7535\u5546\u63d0\u901f\u589e\u7a33\u3001\u63d0\u5347\u8f6c\u5316\u7684\u5173\u952e"},"content":{"rendered":"<p>\u5728\u8de8\u5883\u7535\u5546\u7ade\u4e89\u65e5\u76ca\u6fc0\u70c8\u7684\u4eca\u5929\uff0c\u9875\u9762\u52a0\u8f7d\u901f\u5ea6\u3001\u7a33\u5b9a\u6027\u4e0e\u53ef\u7528\u6027\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u4e0e\u8f6c\u5316\u7387\u3002\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08Content Delivery 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Push\uff09<\/strong>\uff1a\u5e38\u89c1\u4e3a\u56de\u6e90\u6a21\u5f0f\uff0c\u8fb9\u7f18\u8282\u70b9\u5728\u672a\u547d\u4e2d\u7f13\u5b58\u65f6\u62c9\u53d6\u6e90\u7ad9\uff08Origin\uff09\u5185\u5bb9\uff1b\u4ea6\u53ef\u91c7\u7528 Push\uff0c\u5c06\u5185\u5bb9\u4e3b\u52a8\u4e0b\u53d1\u5230\u8fb9\u7f18\u3002<\/li>\n<li><strong>\u7f13\u5b58\u63a7\u5236\u4e0e\u5931\u6548\u673a\u5236<\/strong>\uff1a\u901a\u8fc7 HTTP \u5934\uff08Cache-Control\u3001Expires\u3001ETag\u3001Last-Modified\uff09\u548c\u81ea\u5b9a\u4e49\u7684 Cache Key\uff0c\u5b9e\u73b0\u7ec6\u7c92\u5ea6\u7f13\u5b58\u7b56\u7565\u4e0e\u4e3b\u52a8\u5931\u6548\uff08Purge\uff09\u3002<\/li>\n<li><strong>\u5b89\u5168\u4e0e\u52a0\u901f\u534f\u8bae<\/strong>\uff1aTLS \u52a0\u901f\u3001HTTP\/2\u3001HTTP\/3\uff08QUIC\uff09\u3001GZIP\/Brotli \u538b\u7f29\u3001TCP \u4f18\u5316\u3001\u8fde\u63a5\u590d\u7528\u7b49\u6280\u672f\u5171\u540c\u964d\u4f4e\u5ef6\u8fdf\u5e76\u63d0\u5347\u541e\u5410\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u529f\u80fd\u6269\u5c55<\/strong>\uff1a\u5982\u8fb9\u7f18\u91cd\u5199\u3001\u56fe\u50cf\u4f18\u5316\u3001\u89c6\u9891\u8f6c\u7801\u3001A\/B \u6d4b\u8bd5\u3001\u4e1a\u52a1\u8def\u7531\u3001\u5b89\u5168\u9632\u62a4\uff08WAF\u3001Bot \u7ba1\u7406\uff09\u7b49\u3002<\/li>\n<\/ul>\n<h3>\u7f13\u5b58\u4e00\u81f4\u6027\u4e0e\u7f13\u5b58\u7c92\u5ea6<\/h3>\n<p>\u7f13\u5b58\u4e00\u81f4\u6027\u5173\u7cfb\u5230\u5546\u54c1\u4ef7\u683c\u3001\u5e93\u5b58\u7b49\u52a8\u6001\u4fe1\u606f\u7684\u6b63\u786e\u6027\u3002\u5e38\u89c1\u505a\u6cd5\u6709\uff1a<\/p>\n<ul>\n<li>\u5bf9\u5546\u54c1\u8be6\u60c5\u9875\u91c7\u7528 <strong>\u8fb9\u7f18\u7f13\u5b58\u77edTTL<\/strong>\uff08\u5982\u51e0\u5206\u949f\uff09\uff0c\u5e76\u7ed3\u5408 <code>stale-while-revalidate<\/code> \u5141\u8bb8\u8fb9\u7f18\u8fd4\u56de\u8fc7\u671f\u5185\u5bb9\u7684\u540c\u65f6\u540e\u53f0\u5237\u65b0\uff0c\u4fdd\u8bc1\u53ef\u7528\u6027\u4e0e\u5b9e\u65f6\u6027\u5e73\u8861\u3002<\/li>\n<li>\u5bf9\u4ef7\u683c\/\u5e93\u5b58\u7b49\u5173\u952e\u6570\u636e\u91c7\u7528 <strong>API \u56de\u6e90\u6216\u8fb9\u7f18\u903b\u8f91\u5224\u65ad<\/strong>\uff0c\u53ea\u7f13\u5b58\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001\u6837\u5f0f\u3001\u811a\u672c\uff09\uff0c\u52a8\u6001\u6570\u636e\u901a\u8fc7 AJAX\/GraphQL \u4ece\u6700\u8fd1\u533a\u57df\u7684\u5e94\u7528\u670d\u52a1\u5668\u6216\u6570\u636e\u5e93\u83b7\u53d6\u3002<\/li>\n<li>\u4f7f\u7528 <strong>Cache Key \u7b56\u7565<\/strong>\uff08\u6309 Query String\u3001Cookie\u3001Header \u7b49\uff09\u5b9e\u73b0\u6709\u6761\u4ef6\u7684\u7f13\u5b58\u5206\u6d41\uff0c\u4f8b\u5982\u6309\u56fd\u5bb6\/\u8d27\u5e01\u533a\u5206\u7f13\u5b58\u7248\u672c\u3002<\/li>\n<\/ul>\n<h2>\u8de8\u5883\u7535\u5546\u7684\u5178\u578b\u5e94\u7528\u573a\u666f\u4e0e CDN \u529f\u80fd<\/h2>\n<p>\u8de8\u5883\u7535\u5546\u4e1a\u52a1\u5728\u4e0d\u540c\u56fd\u5bb6\/\u5730\u533a\u6709\u4e0d\u540c\u7684\u7f51\u7edc\u6761\u4ef6\u3001\u5408\u89c4\u8981\u6c42\u53ca\u6d41\u91cf\u7279\u5f81\uff0cCDN \u5728\u4ee5\u4e0b\u573a\u666f\u4ef7\u503c\u663e\u8457\uff1a<\/p>\n<h3>1. \u5168\u7403\u9759\u6001\u8d44\u6e90\u52a0\u901f<\/h3>\n<p>\u4ea7\u54c1\u56fe\u7247\u3001\u9759\u6001\u9875\u9762\u3001JavaScript\u3001CSS \u7b49\u901a\u8fc7 CDN \u8fb9\u7f18\u8282\u70b9\u5206\u53d1\uff0c\u663e\u8457\u51cf\u5c11\u9996\u6b21\u5b57\u8282\u65f6\u95f4\uff08TTFB\uff09\u548c\u9875\u9762\u52a0\u8f7d\u6e32\u67d3\u65f6\u95f4\u3002\u5bf9\u4e8e\u56fe\u7247\u5bc6\u96c6\u7684\u5546\u54c1\u5217\u8868\u9875\u548c\u8be6\u60c5\u9875\uff0c\u652f\u6301 WebP\/AVIF\u3001\u6309\u9700\u88c1\u526a\u4e0e\u61d2\u52a0\u8f7d\u7684\u8fb9\u7f18\u56fe\u50cf\u5904\u7406\u53ef\u4ee5\u628a\u5e26\u5bbd\u6210\u672c\u548c\u6e32\u67d3\u65f6\u95f4\u8fdb\u4e00\u6b65\u538b\u7f29\u3002<\/p>\n<h3>2. API \u4e0e\u52a8\u6001\u5185\u5bb9\u52a0\u901f<\/h3>\n<p>\u901a\u8fc7\u667a\u80fd\u8def\u7531\u3001\u957f\u8fde\u63a5\uff08HTTP\/2\uff09\u548c\u8fb9\u7f18\u7f13\u5b58\u7b56\u7565\uff0c\u53ef\u4ee5\u52a0\u901f\u7528\u6237\u8bf7\u6c42\u5230\u6700\u8fd1\u7684\u5e94\u7528\u8282\u70b9\uff0c\u7ed3\u5408 Global Server Load Balancing\uff08GSLB\uff09\u5c06\u8bf7\u6c42\u5bfc\u5411\u5c31\u8fd1\u7684\u8ba1\u7b97\u8d44\u6e90\uff08\u4f8b\u5982\u4f4d\u4e8e\u9999\u6e2f\u7684\u540e\u7aef\u6216\u7f8e\u56fd\u7684\u5fae\u670d\u52a1\uff09\u3002\u5bf9\u4e8e\u5e93\u5b58\u4e0e\u4e0b\u5355\u7c7b\u7684\u5f3a\u4e00\u81f4\u6027\u8bf7\u6c42\uff0c\u53ef\u5728\u8fb9\u7f18\u505a\u901f\u7387\u9650\u5236\u4e0e\u9884\u68c0\uff0c\u51cf\u5c11\u5f02\u5e38\u5cf0\u503c\u5bf9\u6e90\u7ad9\u538b\u529b\u3002<\/p>\n<h3>3. \u89c6\u9891\u4e0e\u4ea4\u4e92\u5f0f\u5185\u5bb9\u5206\u53d1<\/h3>\n<p>\u8de8\u5883\u7535\u5546\u7684\u5546\u54c1\u5c55\u793a\u8d8a\u6765\u8d8a\u591a\u91c7\u7528\u89c6\u9891\u6216\u76f4\u64ad\uff0cCDN \u7684\u5206\u7247\u7f13\u5b58\u3001\u5e26\u5bbd\u8c03\u5ea6\u548c\u8fb9\u7f18\u8f6c\u7801\u80fd\u663e\u8457\u63d0\u5347\u89c6\u9891\u542f\u52a8\u901f\u5ea6\u4e0e\u89c2\u770b\u7a33\u5b9a\u6027\uff0c\u5e76\u964d\u4f4e\u56de\u6e90\u5e26\u5bbd\u6210\u672c\u3002<\/p>\n<h3>4. \u5b89\u5168\u52a0\u56fa\u4e0e\u6297 DDoS<\/h3>\n<p>CDN \u63d0\u4f9b\u5206\u5e03\u5f0f\u7684\u6d41\u91cf\u5438\u7eb3\u4e0e\u6e05\u6d17\u80fd\u529b\uff0c\u7ed3\u5408 WAF\uff08Web Application Firewall\uff09\u3001\u901f\u7387\u9650\u5236\u3001Bot \u7ba1\u7406\u4e0e\u5730\u7406\u5c01\u7981\u7b56\u7565\uff0c\u53ef\u5728\u7f51\u7edc\u8fb9\u7f18\u62e6\u622a\u653b\u51fb\u6d41\u91cf\uff0c\u4fdd\u62a4\u4f4d\u4e8e\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u5176\u4ed6\u6d77\u5916\u670d\u52a1\u5668\u7684\u540e\u7aef\u3002<\/p>\n<h2>\u4e0e\u7eaf\u6d77\u5916\u670d\u52a1\u5668\uff08\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\u3001\u65e5\u672c\u670d\u52a1\u5668\u7b49\uff09\u90e8\u7f72\u7684\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u5f88\u591a\u7ad9\u957f\u4e0e\u4f01\u4e1a\u4e60\u60ef\u76f4\u63a5\u79df\u7528\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS \u6216\u65e5\u672c\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668 \u7b49\u6765\u90e8\u7f72\u7f51\u7ad9\u3002\u4e0e\u4ec5\u9760\u5355\u70b9\u6216\u591a\u70b9\u670d\u52a1\u5668\u76f8\u6bd4\uff0cCDN \u7684\u4f18\u52bf\u4f53\u73b0\u5728\uff1a<\/p>\n<ul>\n<li><strong>\u66f4\u4f4e\u7684\u5ef6\u65f6\u4e0e\u66f4\u9ad8\u7684\u5e76\u53d1\u541e\u5410<\/strong>\uff1aCDN \u5c06\u9759\u6001\u8d44\u6e90\u5206\u6563\u5230\u66f4\u9760\u8fd1\u7528\u6237\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u80fd\u663e\u8457\u964d\u4f4e\u8de8\u6d0b RTT\uff0c\u63d0\u5347\u5e76\u53d1\u80fd\u529b\uff0c\u51cf\u5c11\u5bf9\u5355\u70b9 VPS \u7684\u4f9d\u8d56\u3002<\/li>\n<li><strong>\u66f4\u5f3a\u7684\u9c81\u68d2\u6027<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9\u5206\u5e03\u5f0f\u67b6\u6784\u5728\u9047\u5230\u6e90\u7ad9\u6545\u969c\u65f6\u53ef\u901a\u8fc7\u7f13\u5b58\u547d\u4e2d\u7ee7\u7eed\u670d\u52a1\uff0c\u7ed3\u5408\u591a\u6e90\u56de\u6e90\u6216\u8d1f\u8f7d\u5747\u8861\u63d0\u5347\u53ef\u7528\u6027\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u6210\u672c\u4f18\u5316<\/strong>\uff1a\u5927\u91cf\u9759\u6001\u5185\u5bb9\u7531 CDN 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VPS\/\u670d\u52a1\u5668\u81ea\u8eab\u7684\u4e3b\u673a\u5c42\u5b89\u5168\u63aa\u65bd\u3002<\/li>\n<\/ul>\n<p>\u5f53\u7136\uff0c\u7eaf\u670d\u52a1\u5668\u65b9\u6848\u5728\u5bf9\u6570\u636e\u5168\u7a0b\u638c\u63a7\u3001\u9ad8\u5ea6\u5b9a\u5236\u5316\u5904\u7406\u6216\u4f4e\u6210\u672c\u957f\u671f\u9759\u6001\u7ad9\u70b9\u7684\u573a\u666f\u4e0b\u4ecd\u6709\u4ef7\u503c\u3002\u5408\u7406\u7684\u505a\u6cd5\u5e38\u5e38\u662f\u5c06\u6d77\u5916\u670d\u52a1\u5668\uff08\u5305\u62ec\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\u4f5c\u4e3a\u6e90\u7ad9\u6216\u52a8\u6001\u8ba1\u7b97\u8282\u70b9\uff0c\u914d\u5408\u5168\u7403 CDN \u505a\u5206\u53d1\u3002<\/p>\n<h2>\u6280\u672f\u7ec6\u8282\u4e0e\u4f18\u5316\u5b9e\u8df5<\/h2>\n<h3>\u534f\u8bae\u4e0e\u4f20\u8f93\u5c42\u4f18\u5316<\/h3>\n<ul>\n<li>\u4f18\u5148\u542f\u7528 <strong>HTTP\/2 \u6216 HTTP\/3\uff08QUIC\uff09<\/strong>\uff1a\u8fde\u63a5\u590d\u7528\u3001\u5934\u538b\u7f29\u3001\u591a\u8def\u590d\u7528\u4e0e\u66f4\u5feb\u7684\u63e1\u624b\u90fd\u80fd\u964d\u4f4e\u5ef6\u65f6\uff0cHTTP\/3 \u5728\u9ad8\u4e22\u5305\u73af\u5883\u4e0b\u66f4\u5177\u4f18\u52bf\uff0c\u9002\u5408\u8de8\u56fd\u94fe\u8def\u3002<\/li>\n<li>\u542f\u7528 <strong>TLS \u4f1a\u8bdd\u590d\u7528\u4e0e OCSP Stapling<\/strong>\uff1a\u51cf\u5c11 TLS \u63e1\u624b\u5ef6\u8fdf\uff0c\u63d0\u5347 HTTPS \u6027\u80fd\uff0c\u63d0\u5347\u5168\u7403\u8bbf\u95ee\u4f53\u9a8c\u3002<\/li>\n<li>\u4f7f\u7528 <strong>GZIP \/ Brotli<\/strong> \u538b\u7f29\u6587\u672c\u8d44\u6e90\uff0cBrotli 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\u63d0\u9ad8\u53ef\u7528\u6027\uff0c\u964d\u4f4e\u56de\u6e90\u538b\u529b\u3002<\/li>\n<\/ul>\n<h3>\u56fd\u9645\u5316\u4e0e\u8def\u7531\u4f18\u5316<\/h3>\n<ul>\n<li>\u6309\u7528\u6237\u6240\u5728\u5730\u8fd4\u56de\u4e0d\u540c\u7684\u8d27\u5e01\u3001\u8bed\u8a00\u4e0e\u5546\u54c1\u5b9a\u4ef7\u7248\u672c\uff0cCache Key \u4e2d\u533a\u5206\u56fd\u5bb6\u6216 Accept-Language\uff0c\u907f\u514d\u7f13\u5b58\u6df7\u6dc6\u3002<\/li>\n<li>\u5229\u7528 Geo IP \u4e0e Anycast \u7b56\u7565\uff0c\u5c06\u8bf7\u6c42\u5bfc\u5411\u6700\u8fd1\u6216\u6700\u4f18\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u4ece\u800c\u5728\u8bbf\u95ee\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u97e9\u6216\u65b0\u52a0\u5761\u7b49\u4e0d\u540c\u5e02\u573a\u65f6\u90fd\u80fd\u83b7\u5f97\u8f83\u4f4e\u5ef6\u65f6\u3002<\/li>\n<\/ul>\n<h3>\u76d1\u63a7\u4e0e\u6307\u6807<\/h3>\n<p>\u90e8\u7f72\u540e\u9700\u89c2\u6d4b\u5173\u952e\u6027\u80fd\u6307\u6807\uff08KPI\uff09\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u7f13\u5b58\u547d\u4e2d\u7387\uff08Edge Hit Ratio\uff09<\/li>\n<li>\u56de\u6e90\u6d41\u91cf\u4e0e\u56de\u6e90\u8bf7\u6c42\u6570<\/li>\n<li>TTFB\u3001\u9996\u5c4f\u65f6\u95f4\uff08First Contentful Paint\uff09\u4e0e DOMContentLoaded<\/li>\n<li>\u9519\u8bef\u7387\u30014xx\/5xx \u4e0e CDN \u6e05\u6d17\u4e8b\u4ef6\u6570\u91cf<\/li>\n<\/ul>\n<p>\u7ed3\u5408\u8fd9\u4e9b\u6307\u6807\u8fdb\u884c\u9488\u5bf9\u6027\u4f18\u5316\uff0c\u6bd4\u5982\u63d0\u9ad8\u5e38\u89c1\u8d44\u6e90\u7684\u9884\u70ed\u3001\u8c03\u6574 Cache Key\u3001\u4f18\u5316\u56de\u6e90 API \u63a5\u53e3\u7b49\u3002<\/p>\n<h2>\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\uff08\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u4e0e\u5f00\u53d1\u8005\uff09<\/h2>\n<p>\u5728\u4e3a\u8de8\u5883\u7535\u5546\u9009\u578b CDN 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\u7ba1\u7406\u4e0e\u901f\u7387\u9650\u5236\u529f\u80fd\uff0c\u4ee5\u5e94\u5bf9\u8de8\u5883\u4e1a\u52a1\u7684\u6d41\u91cf\u653b\u51fb\u3002<\/li>\n<li><strong>\u7f13\u5b58\u63a7\u5236\u4e0e\u81ea\u5b9a\u4e49\u80fd\u529b<\/strong>\uff1a\u652f\u6301\u81ea\u5b9a\u4e49 Cache Key\u3001\u8fb9\u7f18\u903b\u8f91\uff08edge scripting\/worker\uff09\u548c\u7075\u6d3b\u7684\u5931\u6548\u673a\u5236\uff08Purge API\uff09\u3002<\/li>\n<li><strong>\u53ef\u89c2\u6d4b\u6027\u4e0e\u65e5\u5fd7\u670d\u52a1<\/strong>\uff1a\u63d0\u4f9b\u5b9e\u65f6\u65e5\u5fd7\u3001\u5206\u6790\u4e0e\u544a\u8b66\uff0c\u6709\u52a9\u4e8e\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\u5e76\u505a\u5bb9\u91cf\u8ba1\u5212\u3002<\/li>\n<li><strong>\u6210\u672c\u6a21\u578b<\/strong>\uff1a\u6309\u6d41\u91cf\u8ba1\u8d39\u3001\u6309\u8bf7\u6c42\u8ba1\u8d39\u6216\u6df7\u5408\u8ba1\u8d39\u5bf9\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u5f71\u54cd\u5f88\u5927\uff0c\u9700\u7ed3\u5408\u5e26\u5bbd\u5cf0\u503c\u4e0e\u8bbf\u95ee\u5730\u57df\u5206\u5e03\u8bc4\u4f30\u603b\u6210\u672c\u3002<\/li>\n<\/ul>\n<p>\u90e8\u7f72\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u5148\u5bf9\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001\u811a\u672c\u3001\u6837\u5f0f\uff09\u542f\u7528 CDN\uff0c\u9010\u6b65\u6269\u5c55\u5230 API \u52a0\u901f\u4e0e\u52a8\u6001\u5185\u5bb9\u7684\u8fb9\u7f18\u4f18\u5316\u3002<\/li>\n<li>\u5728\u5f00\u53d1\/\u6d4b\u8bd5\u73af\u5883\u5bf9 Edge 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