{"id":209663,"date":"2025-10-23T20:06:23","date_gmt":"2025-10-23T12:06:23","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209663\/"},"modified":"2025-10-23T20:06:24","modified_gmt":"2025-10-23T12:06:24","slug":"cdn%e9%a9%b1%e5%8a%a8%e7%94%b5%e5%95%86%e5%85%a8%e7%ab%99%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209663\/","title":{"rendered":"CDN\u9a71\u52a8\u7535\u5546\u5168\u7ad9\u6027\u80fd\u98de\u8dc3"},"content":{"rendered":"<p>\u5728\u7535\u5546\u7ade\u4e89\u65e5\u76ca\u6fc0\u70c8\u7684\u5f53\u4e0b\uff0c\u9875\u9762\u54cd\u5e94\u65f6\u95f4\u548c\u53ef\u7528\u6027\u76f4\u63a5\u5f71\u54cd\u8f6c\u5316\u7387\u548c\u7528\u6237\u4f53\u9a8c\u3002\u4f7f\u7528\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u5df2\u7ecf\u4ece\u201c\u53ef\u9009\u9879\u201d\u53d8\u6210\u4e86\u201c\u5fc5\u5907\u9879\u201d\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u53ca\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u89e3\u6790CDN\u5982\u4f55\u9a71\u52a8\u7535\u5546\u5168\u7ad9\u6027\u80fd\u98de\u8dc3\uff0c\u6db5\u76d6\u539f\u7406\u3001\u5177\u4f53\u5e94\u7528\u573a\u666f\u3001\u6280\u672f\u4f18\u5316\u7ec6\u8282\u3001\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u5e2e\u52a9\u4f60\u5728\u591a\u5730\u57df\u90e8\u7f72\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u7b49\uff09\u65f6\u505a\u51fa\u66f4\u660e\u667a\u7684\u67b6\u6784\u51b3\u7b56\u3002<\/p>\n<h2>\u5f15\u8a00\uff1a\u4e3a\u4ec0\u4e48\u7535\u5546\u5fc5\u987b\u91cd\u89c6\u5168\u7ad9\u6027\u80fd<\/h2>\n<p>\u7535\u5546\u7f51\u7ad9\u7684\u8bbf\u5ba2\u5206\u5e03\u5e7f\u6cdb\uff0c\u65e2\u6709\u672c\u5730\u7528\u6237\u4e5f\u6709\u6d77\u5916\u4e70\u5bb6\u3002\u9875\u9762\u52a0\u8f7d\u6162\u3001\u7ed3\u7b97\u73af\u8282\u5ef6\u8fdf\u6216\u8d44\u6e90\u4e0d\u53ef\u7528\uff0c\u90fd\u4f1a\u5bfc\u81f4\u8ba2\u5355\u6d41\u5931\u3002\u7814\u7a76\u663e\u793a\uff0c\u9875\u9762\u6bcf\u589e\u52a01\u79d2\u5ef6\u8fdf\uff0c\u8f6c\u5316\u7387\u4f1a\u663e\u8457\u4e0b\u964d\u3002CDN\u901a\u8fc7\u5c06\u9759\u6001\u548c\u90e8\u5206\u52a8\u6001\u5185\u5bb9\u7f13\u5b58\u5230\u9760\u8fd1\u7528\u6237\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u663e\u8457\u964d\u4f4e\u52a0\u8f7d\u65f6\u5ef6\uff0c\u4ece\u800c\u76f4\u63a5\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u6307\u6807\u3002<\/p>\n<h2>CDN\u7684\u6838\u5fc3\u539f\u7406\u4e0e\u5173\u952e\u7ec4\u4ef6<\/h2>\n<p>\u8981\u7406\u89e3CDN\u5982\u4f55\u63d0\u5347\u7535\u5546\u6027\u80fd\uff0c\u5148\u638c\u63e1\u5176\u6838\u5fc3\u539f\u7406\u548c\u7ec4\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>\u8fb9\u7f18\u8282\u70b9\uff08Edge Nodes\uff09<\/strong>\uff1a\u5206\u5e03\u5728\u4e0d\u540c\u57ce\u5e02\u548c\u56fd\u5bb6\u7684\u7f13\u5b58\u670d\u52a1\u5668\uff0c\u8d1f\u8d23\u54cd\u5e94\u5c31\u8fd1\u8bf7\u6c42\uff0c\u51cf\u5c11RTT\uff08\u5f80\u8fd4\u65f6\u5ef6\uff09\u3002\u5728\u4e9a\u6d32\u573a\u666f\u4e2d\uff0c\u8282\u70b9\u9760\u8fd1\u9999\u6e2f\u3001\u4e1c\u4eac\u3001\u9996\u5c14\u548c\u65b0\u52a0\u5761\u5c24\u4e3a\u91cd\u8981\u3002<\/li>\n<li><strong>Anycast\u548c\u5168\u5c40\u8d1f\u8f7d\u5747\u8861<\/strong>\uff1a\u901a\u8fc7Anycast\u8def\u7531\u628a\u6d41\u91cf\u5bfc\u5411\u6700\u8fd1\u6216\u5065\u5eb7\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u7ed3\u5408DNS\/HTTP\u5c42\u7684\u667a\u80fd\u8d1f\u8f7d\u5747\u8861\uff0c\u4fdd\u969c\u5168\u7403\u8bbf\u95ee\u7684\u7a33\u5b9a\u6027\u3002<\/li>\n<li><strong>\u7f13\u5b58\u7b56\u7565\u4e0e\u7f13\u5b58\u952e\uff08Cache-Control\u3001Cache-Key\uff09<\/strong>\uff1a\u63a7\u5236\u8d44\u6e90\u7684\u7f13\u5b58\u65f6\u957f\u548c\u7c92\u5ea6\u3002\u7535\u5546\u9700\u5bf9\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001CSS\u3001JS\uff09\u91c7\u7528\u957f\u7f13\u5b58\uff0c\u5e76\u901a\u8fc7\u7248\u672c\u5316\uff08query string\u6216\u6587\u4ef6\u540d\uff09\u5b9e\u73b0\u5feb\u901f\u66f4\u65b0\u3002<\/li>\n<li><strong>\u56de\u6e90\u4e0e\u539f\u70b9\u4fdd\u62a4\uff08Origin Shield\uff09<\/strong>\uff1a\u5f53\u7f13\u5b58\u672a\u547d\u4e2d\uff0c\u8fb9\u7f18\u8282\u70b9\u9700\u56de\u6e90\u83b7\u53d6\u5185\u5bb9\u3002Origin Shield\u662f\u4e00\u4e2a\u4e2d\u95f4\u7f13\u5b58\u5c42\uff0c\u80fd\u51cf\u5c11\u5bf9\u4e3b\u7ad9\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u7684\u5e76\u53d1\u56de\u6e90\u8bf7\u6c42\uff0c\u964d\u4f4e\u539f\u70b9\u538b\u529b\u3002<\/li>\n<li><strong>TLS\u7ec8\u6b62\u4e0e\u6027\u80fd\u52a0\u901f\uff08HTTP\/2\u3001HTTP\/3\uff09<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9\u901a\u5e38\u8d1f\u8d23TLS\u63e1\u624b\u548c\u534f\u8bae\u5347\u7ea7\uff0c\u542f\u7528HTTP\/2\u6216HTTP\/3\uff08QUIC\uff09\u80fd\u663e\u8457\u63d0\u9ad8\u5e76\u53d1\/\u4e22\u5305\u73af\u5883\u4e0b\u7684\u4f20\u8f93\u6548\u7387\u3002<\/li>\n<li><strong>\u538b\u7f29\u4e0e\u56fe\u50cf\u4f18\u5316\uff08Gzip\u3001Brotli\u3001WebP\/AVIF\u8f6c\u6362\uff09<\/strong>\uff1a\u5728\u8fb9\u7f18\u5bf9\u6587\u672c\u8fdb\u884cBrotli\u538b\u7f29\uff0c\u6216\u5bf9\u56fe\u7247\u5b9e\u65bd\u54cd\u5e94\u5f0f\u88c1\u526a\u548c\u683c\u5f0f\u8f6c\u6362\uff0c\u80fd\u6781\u5927\u51cf\u5c0f\u4f20\u8f93\u4f53\u79ef\uff0c\u63d0\u5347\u9996\u5c4f\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h2>\u7535\u5546\u573a\u666f\u7684\u5178\u578b\u5e94\u7528\u4e0e\u5b9e\u73b0\u7ec6\u8282<\/h2>\n<p>\u9488\u5bf9\u7535\u5546\u7f51\u7ad9\u4e0d\u540c\u6a21\u5757\uff0cCDN\u7684\u4f7f\u7528\u7b56\u7565\u4e5f\u4e0d\u540c\uff0c\u4e0b\u9762\u5217\u51fa\u5e38\u89c1\u573a\u666f\u53ca\u5b9e\u73b0\u8981\u70b9\uff1a<\/p>\n<h3>\u5546\u54c1\u8be6\u60c5\u9875\u4e0e\u9759\u6001\u8d44\u6e90<\/h3>\n<ul>\n<li>\u5c06\u56fe\u7247\u3001\u9759\u6001JS\/CSS\u3001\u7b2c\u4e09\u65b9\u5e93\u3001\u5b57\u4f53\u5168\u90e8\u8d70CDN\uff0c\u914d\u7f6e\u5f3a\u7f13\u5b58\uff08Cache-Control: max-age=31536000, immutable\uff09\u5e76\u914d\u5408\u6587\u4ef6\u7248\u672c\u53f7\u3002<\/li>\n<li>\u56fe\u7247\u4f7f\u7528\u81ea\u52a8\u683c\u5f0f\u8f6c\u6362\uff08WebP\/AVIF\uff09\u548c\u6309\u9700\u88c1\u526a\uff08\u5bbd\u9ad8\/\u8d28\u91cf\uff09\u529f\u80fd\u3002\u6839\u636e\u8bbe\u5907UA\u6216Client Hints\u8fd4\u56de\u4e0d\u540c\u5206\u8fa8\u7387\uff0c\u8282\u7701\u5e26\u5bbd\u3002<\/li>\n<\/ul>\n<h3>\u7ed3\u7b97\u6d41\u7a0b\u4e0e\u52a8\u6001\u5185\u5bb9\u52a0\u901f<\/h3>\n<ul>\n<li>\u7ed3\u7b97\u9875\u901a\u5e38\u5305\u542b\u654f\u611f\u52a8\u6001\u5185\u5bb9\uff0c\u76f4\u63a5\u7f13\u5b58\u98ce\u9669\u9ad8\u3002\u53ef\u91c7\u7528Stale-while-revalidate\u6216Edge-side include\uff08ESI\uff09\u5c06\u9875\u9762\u62c6\u5206\uff1a\u9759\u6001\u9aa8\u67b6\u7f13\u5b58\u5230\u8fb9\u7f18\uff0c\u52a8\u6001\u533a\u5757\u5b9e\u65f6\u56de\u6e90\u6216\u7531\u8fb9\u7f18\u8ba1\u7b97\u5904\u7406\u3002<\/li>\n<li>\u542f\u7528TLS\u4f1a\u8bdd\u590d\u7528\u3001TCP\u5feb\u901f\u6253\u5f00\u548cHTTP\/3\u53ef\u7f29\u77ed\u52a0\u5bc6\u4e0e\u4f20\u8f93\u5efa\u7acb\u65f6\u95f4\uff0c\u51cf\u5c11\u7ed3\u7b97\u9875\u7684\u4ea4\u6613\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>API\u52a0\u901f\u4e0eAJAX\u8bf7\u6c42<\/h3>\n<ul>\n<li>\u5bf9API\u4f7f\u7528\u77ed\u671f\u7f13\u5b58\u6216\u57fa\u4e8e\u8bf7\u6c42\u5934\u7684\u7f13\u5b58\uff08Authorization\u6216Cookie\u6392\u67e5\uff09\uff0c\u5e76\u7ed3\u5408\u8bf7\u6c42\u53bb\u91cd\uff08deduplication\uff09\u548c\u901f\u7387\u9650\u5236\uff0c\u4fdd\u969c\u540e\u7aef\u7a33\u5b9a\u6027\u3002<\/li>\n<li>\u5728\u6d77\u5916\u90e8\u7f72\u65f6\uff0c\u9488\u5bf9\u7f8e\u56fdVPS\u6216\u65e5\u672c\u670d\u52a1\u5668\u7684API\uff0cCDN\u80fd\u505a\u8de8\u5883\u52a0\u901f\uff0c\u964d\u4f4e\u8de8\u6d0b\u56de\u6e90\u7684RTT\u3002<\/li>\n<\/ul>\n<h3>\u5927\u4fc3\u4e0e\u6d41\u91cf\u5cf0\u503c\u5e94\u5bf9<\/h3>\n<ul>\n<li>\u5728\u53cc11\u3001\u9ed1\u4e94\u7b49\u5927\u4fc3\u671f\u95f4\uff0cCDN\u53ef\u627f\u8f7d\u9759\u6001\u8d44\u6e90\u7edd\u5927\u90e8\u5206\u6d41\u91cf\uff0c\u51cf\u8f7bOrigin\uff08\u65e0\u8bba\u662f\u9999\u6e2f\u670d\u52a1\u5668\u8fd8\u662f\u6d77\u5916\u670d\u52a1\u5668\uff09\u8d1f\u8f7d\u3002\u540c\u65f6\u7528\u9884\u70ed\uff08proactive cache warming\uff09\u548c\u7f13\u5b58\u9884\u52a0\u8f7d\u811a\u672c\u9632\u6b62\u51b7\u542f\u52a8\u3002<\/li>\n<li>\u7ed3\u5408WAF\u548cDDoS\u9632\u62a4\uff0c\u8fb9\u7f18\u5c42\u80fd\u5728\u653b\u51fb\u6001\u52bf\u4e0b\u5148\u884c\u8fc7\u6ee4\u6076\u610f\u6d41\u91cf\uff0c\u907f\u514d\u539f\u70b9\u88ab\u6253\u57ae\u3002<\/li>\n<\/ul>\n<h2>\u6280\u672f\u7ec6\u8282\uff1a\u63d0\u9ad8\u547d\u4e2d\u7387\u4e0e\u964d\u4f4e\u56de\u6e90<\/h2>\n<p>\u7f13\u5b58\u547d\u4e2d\u7387\u76f4\u63a5\u51b3\u5b9aCDN\u4ef7\u503c\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u6280\u672f\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li><strong>\u7edf\u4e00\u7f13\u5b58\u952e\u7b56\u7565<\/strong>\uff1a\u5c3d\u91cf\u5c06\u5f71\u54cd\u7f13\u5b58\u7684\u53c2\u6570\u653e\u5165\u8bf7\u6c42\u5934\u6216\u6807\u51c6\u5316Query String\u987a\u5e8f\uff0c\u907f\u514d\u56e0\u591a\u4f59\u53c2\u6570\u5bfc\u81f4\u547d\u4e2d\u7387\u4e0b\u964d\u3002<\/li>\n<li><strong>\u5206\u5c42\u7f13\u5b58\u67b6\u6784<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9 + 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