{"id":209791,"date":"2025-10-23T23:14:36","date_gmt":"2025-10-23T15:14:36","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209791\/"},"modified":"2025-10-23T23:14:37","modified_gmt":"2025-10-23T15:14:37","slug":"cdn-131","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209791\/","title":{"rendered":"CDN\u5b89\u5168\u52a0\u901f\u6df1\u5ea6\u89e3\u6790\uff1a\u9632\u62a4\u7b56\u7565\u4e0e\u63d0\u901f\u5b9e\u6218\u65b9\u6848"},"content":{"rendered":"<p>\u5728\u5f53\u4eca\u4e92\u8054\u7f51\u73af\u5883\u4e2d\uff0cCDN \u4e0d\u518d\u53ea\u662f\u7b80\u5355\u7684\u9759\u6001\u8d44\u6e90\u5206\u53d1\u5de5\u5177\uff0c\u800c\u5df2\u53d1\u5c55\u4e3a\u627f\u8f7d\u5b89\u5168\u9632\u62a4\u4e0e\u6027\u80fd\u4f18\u5316\u53cc\u91cd\u804c\u8d23\u7684\u5173\u952e\u57fa\u7840\u8bbe\u65bd\u3002\u5bf9\u4e8e\u9762\u5411\u5168\u7403\u6216\u7279\u5b9a\u533a\u57df\u7684\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7406\u89e3 CDN \u5728\u5b89\u5168\u4e0e\u52a0\u901f\u5c42\u9762\u7684\u539f\u7406\u4e0e\u5b9e\u8df5\uff0c\u80fd\u591f\u663e\u8457\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u5e76\u964d\u4f4e\u8fd0\u7ef4\u98ce\u9669\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u5b9e\u6218\u9632\u62a4\u4e0e\u63d0\u901f\u7b56\u7565\uff0c\u4ee5\u53ca\u9009\u8d2d\u5efa\u8bae\u56db\u4e2a\u7ef4\u5ea6\u505a\u6df1\u5ea6\u89e3\u6790\uff0c\u5e26\u6765\u53ef\u843d\u5730\u7684\u6280\u672f\u7ec6\u8282\u4e0e\u64cd\u4f5c\u5efa\u8bae\u3002<\/p>\n<h2>\u539f\u7406\u6982\u8ff0\uff1aCDN \u5982\u4f55\u540c\u65f6\u627f\u62c5\u5b89\u5168\u4e0e\u52a0\u901f<\/h2>\n<p>CDN \u7684\u6838\u5fc3\u529f\u80fd\u662f\u5c06\u5185\u5bb9\u7f13\u5b58\u5230\u8fb9\u7f18\u8282\u70b9\u4ee5\u7f29\u77ed\u7528\u6237\u5230\u6570\u636e\u7684\u7f51\u7edc\u8ddd\u79bb\uff0c\u4ece\u800c\u63d0\u5347\u54cd\u5e94\u901f\u5ea6\u4e0e\u53ef\u7528\u6027\u3002\u4f46\u73b0\u4ee3 CDN \u4e5f\u5728\u4f20\u8f93\u5c42\u3001\u5e94\u7528\u5c42\u52a0\u5165\u591a\u79cd\u5b89\u5168\u6a21\u5757\uff0c\u5f62\u6210\u201c\u8fb9\u7f18\u5148\u884c\u201d\u7684\u9632\u62a4\u4f53\u7cfb\u3002\u4e0b\u9762\u5206\u5c42\u8bf4\u660e\u8fd9\u4e9b\u673a\u5236\u3002<\/p>\n<h3>\u7f13\u5b58\u4e0e\u8def\u7531\u673a\u5236\uff08\u52a0\u901f\u5c42\uff09<\/h3>\n<ul>\n<li>\u7f13\u5b58\u7b56\u7565\uff1a\u57fa\u4e8e <strong>Cache-Control<\/strong>\u3001Expires\u3001ETag\u3001Last-Modified \u7b49\u5934\u90e8\u63a7\u5236\u7f18\u8282\u70b9\u7f13\u5b58\u751f\u547d\u5468\u671f\u3002\u5408\u7406\u914d\u7f6e <strong>stale-while-revalidate<\/strong> \u4e0e <strong>stale-if-error<\/strong> \u53ef\u5728\u56de\u6e90\u4e0d\u53ef\u7528\u65f6\u7ee7\u7eed\u63d0\u4f9b\u5185\u5bb9\u3002<\/li>\n<li>\u7f13\u5b58\u5173\u952e\u5b57\uff08Cache Key\uff09\uff1a\u7531 URL\u3001\u67e5\u8be2\u53c2\u6570\u3001Cookie\u3001Header \u7b49\u7ec4\u6210\u3002\u901a\u8fc7\u7cbe\u7ec6\u5316 Cache Key \u63a7\u5236\u4e0d\u540c\u8bbe\u5907\u4e0e\u8bed\u8a00\u7248\u672c\u7684\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<li>\u5206\u5c42\u7f13\u5b58\uff08Origin Shield\/Regional Cache\uff09\uff1a\u5728\u8fb9\u7f18\u8282\u70b9\u4e4b\u5916\u518d\u8bbe\u7f6e\u533a\u57df\u7f13\u5b58\u5c42\uff0c\u51cf\u5c11\u5bf9\u539f\u7ad9\u7684\u56de\u6e90\u538b\u529b\u4e0e\u5ef6\u8fdf\u6296\u52a8\u3002<\/li>\n<li>\u667a\u80fd\u8def\u7531\u4e0e Anycast\uff1a\u5229\u7528 Anycast \u5c06\u7528\u6237\u8bf7\u6c42\u8def\u7531\u5230\u6700\u8fd1\u6216\u6700\u4f18\u7684\u70b9\uff0c\u914d\u5408\u5065\u5eb7\u68c0\u6d4b\u5b9e\u73b0\u6545\u969c\u5207\u6362\u3002<\/li>\n<\/ul>\n<h3>\u4f20\u8f93\u4e0e\u534f\u8bae\u4f18\u5316<\/h3>\n<ul>\n<li>HTTP\/2 \u4e0e HTTP\/3\uff08QUIC\uff09\uff1a\u5e76\u53d1\u590d\u7528\u4e0e\u5934\u90e8\u538b\u7f29\u51cf\u5c11\u63e1\u624b\u4e0e\u4f20\u8f93\u5f00\u9500\uff0cQUIC \u5728\u4e22\u5305\u9ad8\u6216\u957f\u8ddd\u79bb\u94fe\u8def\u66f4\u5177\u4f18\u52bf\u3002<\/li>\n<li>TLS \u5378\u8f7d\u4e0e\u4f1a\u8bdd\u590d\u7528\uff1a\u8fb9\u7f18\u8282\u70b9\u7ec8\u6b62 TLS\uff0c\u51cf\u8f7b\u56de\u6e90\u538b\u529b\uff0c\u5e76\u4f7f\u7528 TLS 1.3 \u4ee5\u51cf\u5c11\u63e1\u624b\u65f6\u95f4\u3002<\/li>\n<li>\u538b\u7f29\u4e0e\u7f16\u7801\uff1aBrotli\u3001gzip\u3001\u56fe\u7247 WebP\/AVIF \u8f6c\u7801\u5728\u8fb9\u7f18\u5b9e\u73b0\u52a8\u6001\u538b\u7f29\u4e0e\u683c\u5f0f\u8f6c\u6362\uff0c\u8282\u7701\u5e26\u5bbd\u3002<\/li>\n<\/ul>\n<h3>\u5e94\u7528\u5c42\u5b89\u5168\uff08\u9632\u62a4\u5c42\uff09<\/h3>\n<ul>\n<li>Web \u5e94\u7528\u9632\u706b\u5899\uff08WAF\uff09\uff1a\u57fa\u4e8e\u89c4\u5219\u3001\u673a\u5668\u5b66\u4e60\u6216\u884c\u4e3a\u5206\u6790\u62e6\u622a SQL \u6ce8\u5165\u3001XSS\u3001\u6076\u610f\u673a\u5668\u4eba\u7b49\u653b\u51fb\u3002<\/li>\n<li>DDoS \u7f13\u89e3\uff1a\u6d41\u91cf\u6e05\u6d17\u3001\u901f\u7387\u9650\u5236\u3001\u8fde\u63a5\u5c42\u7b5b\u9009\u7b49\uff0c\u7ed3\u5408 Anycast \u4e0e\u9ad8\u5e26\u5bbd\u8fb9\u7f18\u5b9e\u73b0\u5438\u6536\u653b\u51fb\u3002<\/li>\n<li>Bot \u7ba1\u7406\u4e0e\u8bbf\u95ee\u63a7\u5236\uff1a\u57fa\u4e8e fingerprint\u3001\u884c\u4e3a\u3001JS \u6311\u6218\u6216 CAPTCHA \u5bf9\u53ef\u7591\u8bf7\u6c42\u8fdb\u884c\u5206\u6d41\u3002<\/li>\n<li>\u7b7e\u540d URL \/ Token \u9a8c\u8bc1\uff1a\u5bf9\u53d7\u4fdd\u62a4\u8d44\u6e90\uff08\u6bd4\u5982\u89c6\u9891\/\u4e0b\u8f7d\uff09\u901a\u8fc7\u65f6\u95f4\u6233\u7b7e\u540d\u6216 HMAC \u6821\u9a8c\u9650\u5236\u76d7\u94fe\u4e0e\u6ee5\u7528\u3002<\/li>\n<\/ul>\n<h2>\u5178\u578b\u5e94\u7528\u573a\u666f\u4e0e\u5177\u4f53\u5b9e\u73b0\u65b9\u6848<\/h2>\n<p>\u4e0b\u9762\u5217\u4e3e\u82e5\u5e72\u5e38\u89c1\u573a\u666f\uff0c\u5e76\u7ed9\u51fa\u53ef\u64cd\u4f5c\u7684\u914d\u7f6e\u4e0e\u5b9e\u73b0\u5efa\u8bae\uff0c\u4fbf\u4e8e\u5feb\u901f\u843d\u5730\u3002<\/p>\n<h3>\u9759\u6001\u7f51\u7ad9\u4e0e CDN \u7f13\u5b58\u4f18\u5316<\/h3>\n<ul>\n<li>\u7f13\u5b58\u5206\u5c42\u8bbe\u8ba1\uff1a\u5bf9\u9759\u6001\u8d44\u6e90\uff08CSS\/JS\/\u56fe\u7247\uff09\u8bbe\u7f6e\u957f TTL\uff08\u4f8b\u5982 7 \u5929\uff09\uff0c\u5e76\u4f7f\u7528\u7248\u672c\u5316 URL\uff08\u5982 \/app.v1.2.3.js\uff09\u5b9e\u73b0\u5f3a\u7f13\u5b58\u4e0e\u5feb\u901f\u56de\u6eda\u3002<\/li>\n<li>Query \u53c2\u6570\u7b56\u7565\uff1a\u4ec5\u5c06\u7528\u4e8e\u5185\u5bb9\u5dee\u5f02\u7684\u53c2\u6570\u7eb3\u5165 Cache Key\uff0c\u5176\u4ed6\u7528\u4e8e\u7edf\u8ba1\u7684\u53c2\u6570\u901a\u8fc7 <strong>ignore<\/strong> \u89c4\u5219\u5904\u7406\u3002<\/li>\n<li>\u8fb9\u7f18\u538b\u7f29\u4e0e\u8d44\u6e90\u5408\u5e76\uff1a\u5f00\u542f Brotli \u4e0e\u56fe\u7247\u6309\u9700\u8f6c\u7801\uff0c\u4f7f\u7528 HTTP\/2 push \u8c28\u614e\u8bc4\u4f30\u662f\u5426\u542f\u7528\u3002<\/li>\n<\/ul>\n<h3>\u52a8\u6001\u7ad9\u70b9\u4e0e API \u52a0\u901f<\/h3>\n<ul>\n<li>\u52a8\u6001\u7f13\u5b58\uff08Edge Side Includes\u3001Stale\uff09\uff1a\u5bf9\u90e8\u5206\u53ef\u7f13\u5b58\u7684 API \u8fd4\u56de\u8bbe\u7f6e\u77ed TTL \u5e76\u4f7f\u7528 <strong>stale-while-revalidate<\/strong> \u4fdd\u8bc1\u4f4e\u5ef6\u8fdf\u3002<\/li>\n<li>\u7f13\u5b58\u952e\u8bbe\u8ba1\uff1a\u5bf9 API \u4f7f\u7528\u8bf7\u6c42\u4f53\u54c8\u5e0c\u6216\u7279\u5b9a Header\uff08\u5982 Authorization\uff09\u4ee5\u533a\u5206\u7528\u6237\u4e2a\u6027\u5316\u5185\u5bb9\u3002<\/li>\n<li>\u56de\u6e90\u4f18\u5316\uff1a\u5f00\u542f\u8fde\u63a5\u590d\u7528\u3001\u4fdd\u6301\u957f\u8fde\u63a5\uff08Keep-Alive\uff09\u4e0e HTTP\/2 \u56de\u6e90\u4ee5\u51cf\u5c11\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>\u89c6\u9891\u3001\u4e0b\u8f7d\u7c7b\u5927\u5bf9\u8c61\u5206\u53d1<\/h3>\n<ul>\n<li>\u5206\u6bb5\u4f20\u8f93\u4e0e\u65ad\u70b9\u7eed\u4f20\uff1a\u4f7f\u7528 Range \u8bf7\u6c42\u4e0e\u5206\u7247\u7f13\u5b58\uff0c\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58\u70ed\u95e8\u5206\u7247\u3002<\/li>\n<li>\u7b7e\u540d URL \u4e0e\u9632\u76d7\u94fe\uff1a\u7ed3\u5408\u65f6\u95f4\u6233\u3001IP \u767d\u540d\u5355\u6216 Referer \u68c0\u6d4b\uff0c\u9632\u6b62\u76d7\u94fe\u4e0e\u975e\u6cd5\u5206\u53d1\u3002<\/li>\n<li>\u591a\u6e90\u5e76\u884c\u4e0b\u8f7d\uff08M3U8\/CDN \u591a\u955c\u50cf\uff09\uff1a\u4f7f\u7528\u591a\u955c\u50cf+\u5ba2\u6237\u7aef\u5e76\u884c\u62c9\u53d6\u63d0\u5347\u4e0b\u8f7d\u901f\u7387\u3002<\/li>\n<\/ul>\n<h2>\u6df1\u5165\u9632\u62a4\u7b56\u7565\uff1a\u4ece\u8fb9\u7f18\u5230\u56de\u6e90\u7684\u5b89\u5168\u94fe\u8def<\/h2>\n<p>\u5b8c\u6574\u7684\u5b89\u5168\u9632\u62a4\u5e94\u8986\u76d6\u8fb9\u7f18\u8282\u70b9\u3001\u56de\u6e90\u94fe\u8def\u4e0e\u539f\u7ad9\u4e09\u5c42\u3002\u4ee5\u4e0b\u4e3a\u4e00\u5957\u53ef\u6267\u884c\u7684\u7b56\u7565\u6e05\u5355\uff1a<\/p>\n<ul>\n<li><strong>\u8fb9\u7f18\u5148\u884c\u9632\u62a4<\/strong>\uff1a\u5728 CDN \u8fb9\u7f18\u542f\u7528 DDoS \u6e05\u6d17\u3001WAF\u3001\u901f\u7387\u9650\u5236\u4e0e Bot \u7ba1\u7406\uff0c\u963b\u6b62\u7edd\u5927\u591a\u6570\u6076\u610f\u6d41\u91cf\u5728\u5230\u8fbe\u539f\u7ad9\u524d\u88ab\u62e6\u622a\u3002<\/li>\n<li><strong>\u56de\u6e90\u767d\u540d\u5355\u4e0e\u52a0\u56fa<\/strong>\uff1a\u5c06\u56de\u6e90\u63a5\u53e3\u4ec5\u5141\u8bb8 CDN \u8fb9\u7f18 IP \u8bbf\u95ee\uff0c\u5173\u95ed\u4e0d\u5fc5\u8981\u7aef\u53e3\uff0c\u4f7f\u7528 Strong TLS\u3001\u8bc1\u4e66\u9489\u624e\uff08Certificate Pinning\uff09\u6216 mTLS\uff08\u53cc\u5411 TLS\uff09\u3002<\/li>\n<li><strong>\u6d41\u91cf\u4e0e\u4e8b\u4ef6\u76d1\u63a7<\/strong>\uff1a\u6536\u96c6\u8fb9\u7f18\u65e5\u5fd7\uff08\u8bbf\u95ee\u65e5\u5fd7\u3001WAF \u62a5\u544a\u3001Top N \u8bf7\u6c42\uff09\u5e76\u5efa\u7acb\u544a\u8b66\u7b56\u7565\uff08\u5f02\u5e38\u6d41\u91cf\u9608\u503c\u3001\u9519\u8bef\u7387\u98d9\u5347\uff09\u3002<\/li>\n<li><strong>\u81ea\u52a8\u5316\u54cd\u5e94<\/strong>\uff1a\u7ed3\u5408\u9632\u706b\u5899\u89c4\u5219 API\u3001\u81ea\u52a8\u5316\u811a\u672c\u5728\u68c0\u6d4b\u5230\u653b\u51fb\u65f6\u5feb\u901f\u4e0b\u53d1\u89c4\u5219\uff08\u5982\u4e34\u65f6\u5c01\u7981 IP \u6bb5\u3001\u542f\u7528\u66f4\u4e25\u683c\u7684 JS \u6311\u6218\uff09\u3002<\/li>\n<li><strong>\u5b89\u5168\u6d4b\u8bd5\u4e0e\u6f14\u7ec3<\/strong>\uff1a\u5b9a\u671f\u8fdb\u884c\u7ea2\u84dd\u5bf9\u6297\u3001\u6d41\u91cf\u6d2a\u6cdb\u6f14\u7ec3\u4e0e\u6e17\u900f\u6d4b\u8bd5\uff0c\u9a8c\u8bc1\u9632\u62a4\u7684\u6709\u6548\u6027\u4e0e\u56de\u6e90\u5bb9\u707e\u80fd\u529b\u3002<\/li>\n<\/ul>\n<h2>\u63d0\u901f\u5b9e\u6218\uff1a\u5e38\u89c1\u95ee\u9898\u4e0e\u4f18\u5316\u63aa\u65bd<\/h2>\n<p>\u5728\u90e8\u7f72\u540e\uff0c\u5e38\u89c1\u7684\u6027\u80fd\u74f6\u9888\u591a\u96c6\u4e2d\u5728\u7f13\u5b58\u547d\u4e2d\u7387\u4f4e\u3001TLS \u63e1\u624b\u65f6\u95f4\u957f\u3001\u8de8\u5883\u94fe\u8def\u5ef6\u8fdf\u4e0e\u56de\u6e90\u6296\u52a8\u3002\u9488\u5bf9\u8fd9\u4e9b\u95ee\u9898\u7684\u89e3\u51b3\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u5347\u7f13\u5b58\u547d\u4e2d\u7387<\/strong>\uff1a\u4f7f\u7528\u5408\u7406\u7684 Cache Key\u3001\u79fb\u9664\u4e0d\u5fc5\u8981\u7684 Vary Header\u3001\u91c7\u7528\u8d44\u6e90\u7248\u672c\u5316\u907f\u514d\u7f13\u5b58\u96ea\u5d29\u3002<\/li>\n<li><strong>\u7f29\u77ed TLS\/\u63e1\u624b\u5ef6\u8fdf<\/strong>\uff1a\u542f\u7528 TLS 1.3\u3001\u4f1a\u8bdd\u590d\u7528\uff08Session Resumption\uff09\u3001OCSP Stapling \u4e0e\u8fb9\u7f18 TLS 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