{"id":209479,"date":"2025-10-23T15:38:49","date_gmt":"2025-10-23T07:38:49","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209479\/"},"modified":"2025-10-23T15:38:50","modified_gmt":"2025-10-23T07:38:50","slug":"cdn%e5%85%a5%e9%97%a8%ef%bc%9a%e6%8f%ad%e5%bc%80%e5%86%85%e5%ae%b9%e5%88%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209479\/","title":{"rendered":"CDN\u5165\u95e8\uff1a\u63ed\u5f00\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\u52a0\u901f\u4e0e\u7f13\u5b58\u7684\u6838\u5fc3\u539f\u7406"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u4e92\u8054\u7f51\u73af\u5883\u4e0b\uff0c\u7f51\u7ad9\u6027\u80fd\u548c\u53ef\u7528\u6027\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u4e0e\u5546\u4e1a\u8f6c\u5316\u3002\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4f5c\u4e3a\u63d0\u5347\u9759\u6001\u4e0e\u52a8\u6001\u5185\u5bb9\u4f20\u8f93\u901f\u5ea6\u3001\u964d\u4f4e\u539f\u7ad9\u538b\u529b\u7684\u91cd\u8981\u6280\u672f\uff0c\u5df2\u7ecf\u6210\u4e3a\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u7684\u5fc5\u5907\u5de5\u5177\u3002\u672c\u6587\u5c06\u4ece\u6838\u5fc3\u539f\u7406\u51fa\u53d1\uff0c\u6df1\u5165\u89e3\u6790 CDN \u7684\u7f13\u5b58\u4e0e\u52a0\u901f\u673a\u5236\u3001\u5177\u4f53\u5e94\u7528\u573a\u666f\u3001\u4e0d\u540c\u90e8\u7f72\u4e0e\u4f18\u52bf\u5bf9\u6bd4\uff0c\u5e76\u7ed9\u51fa\u9009\u8d2d\u4e0e\u4f18\u5316\u5efa\u8bae\uff0c\u5e2e\u52a9\u4f60\u5728\u9009\u62e9\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u6d77\u5916\u670d\u52a1\u5668\u65f6\u66f4\u6709\u628a\u63e1\u3002<\/p>\n<h2>CDN \u7684\u57fa\u672c\u539f\u7406\uff1a\u8fb9\u7f18\u7f13\u5b58\u4e0e\u5168\u5c40\u8def\u7531<\/h2>\n<p>CDN \u7684\u6838\u5fc3\u601d\u60f3\u662f\u628a\u5185\u5bb9\u4ece\u539f\u59cb\u670d\u52a1\u5668\uff08Origin\uff09\u590d\u5236\u5230\u9760\u8fd1\u7528\u6237\u7684\u8fb9\u7f18\u8282\u70b9\uff08PoP\uff0cPoint of 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\u4f1a\u8bdd\u590d\u7528\u3001\u8fde\u63a5\u590d\u7528\u4e0e\u591a\u8def\u590d\u7528\uff0c\u51cf\u5c11\u63e1\u624b\u548c\u4f20\u8f93\u5ef6\u8fdf\uff0c\u5c24\u5176\u5728\u8de8\u56fd\u94fe\u8def\u4e2d\u6548\u679c\u660e\u663e\u3002<\/li>\n<\/ul>\n<h3>Pull vs Push \u7f13\u5b58<\/h3>\n<p>\u4e24\u79cd\u5e38\u89c1\u7684\u7f13\u5b58\u66f4\u65b0\u6a21\u5f0f\u5404\u6709\u4f18\u7f3a\u70b9\uff1a<\/p>\n<ul>\n<li><strong>Pull\uff08\u6309\u9700\u62c9\u53d6\uff09<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9\u5728\u9996\u6b21\u8bf7\u6c42\u65f6\u4ece Origin 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\u6765\u8bbe\u5b9a\u751f\u5b58\u671f\uff1b\u77ed TTL \u63d0\u9ad8\u4e00\u81f4\u6027\uff0c\u4f46\u589e\u52a0\u56de\u6e90\u9891\u7387\u3002<\/li>\n<li><strong>\u534f\u5546\u7f13\u5b58\uff08Conditional Requests\uff09<\/strong>\uff1a\u4f7f\u7528 ETag \u6216 Last-Modified\uff0c\u8fb9\u7f18\u8282\u70b9\u53ef\u53d1\u9001 If-None-Match\/If-Modified-Since \u5230 Origin\uff0cOrigin \u8fd4\u56de 304 \u51cf\u5c11\u5e26\u5bbd\u3002<\/li>\n<li><strong>\u4e3b\u52a8\u5931\u6548\uff08Purge\/Invalidate\uff09<\/strong>\uff1a\u901a\u8fc7 API \u6216\u7ba1\u7406\u63a7\u5236\u53f0\u53d1\u8d77\u6307\u5b9a URL \u7684\u5931\u6548\u8bf7\u6c42\uff0c\u9002\u5408\u66f4\u65b0\u9891\u7e41\u7684\u8d44\u6e90\u3002<\/li>\n<li><strong>\u7248\u672c\u5316 URL<\/strong>\uff1a\u901a\u8fc7\u6587\u4ef6\u540d\u6216\u67e5\u8be2\u53c2\u6570\u5e26\u7248\u672c\u53f7\uff0c\u662f\u6700\u53ef\u9760\u7684\u7f13\u5b58\u5237\u65b0\u7b56\u7565\uff0c\u907f\u514d\u590d\u6742\u5931\u6548\u903b\u8f91\u3002<\/li>\n<\/ul>\n<h2>\u52a0\u901f\u52a8\u6001\u5185\u5bb9\u4e0e\u667a\u80fd\u8def\u7531<\/h2>\n<p>\u867d\u7136 CDN \u64c5\u957f\u9759\u6001\u5185\u5bb9\uff0c\u4f46\u73b0\u4ee3 CDN \u4e5f\u53ef\u52a0\u901f\u52a8\u6001\u8bf7\u6c42\u3002\u5e38\u89c1\u624b\u6bb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u52a8\u6001\u538b\u7f29\u4e0e\u534f\u8bae\u4f18\u5316<\/strong>\uff1a\u8fb9\u7f18\u652f\u6301 Gzip\/Brotli \u538b\u7f29\uff0cHTTP\/2\/3 \u591a\u8def\u590d\u7528\u51cf\u5c11\u5f80\u8fd4\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u8ba1\u7b97\uff08Edge Compute\uff09<\/strong>\uff1a\u4f7f\u7528\u8fb9\u7f18\u51fd\u6570\uff08\u4f8b\u5982 Worker\uff09\u5728\u8fd1\u7528\u6237\u4fa7\u5904\u7406\u8def\u7531\u3001A\/B \u6d4b\u8bd5\u3001\u8f7b\u91cf\u7f13\u5b58\u6216\u9274\u6743\uff0c\u4ece\u800c\u964d\u4f4e\u56de\u6e90\u9891\u7387\u3002<\/li>\n<li><strong>\u8fde\u63a5\u4fdd\u6301\u4e0e\u590d\u7528<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9\u4e0e Origin \u5efa\u7acb\u6301\u4e45\u8fde\u63a5\u6c60\uff0c\u51cf\u5c11\u8fde\u63a5\u5efa\u7acb\u5f00\u9500\uff0c\u63d0\u5347\u52a8\u6001\u8bf7\u6c42\u7684\u541e\u5410\u4e0e\u54cd\u5e94\u7a33\u5b9a\u6027\u3002<\/li>\n<li><strong>\u8bf7\u6c42\u5207\u7247\u4e0e\u5e76\u884c\u56de\u6e90<\/strong>\uff1a\u5bf9\u5927\u6587\u4ef6\u6216\u6d41\u5a92\u4f53\u4f7f\u7528\u5206\u7247\u548c\u5e76\u884c\u4e0b\u8f7d\uff0c\u63d0\u9ad8\u8de8\u7f51\u7edc\u4f20\u8f93\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2>\u5b89\u5168\u4e0e\u53ef\u9760\u6027\u529f\u80fd<\/h2>\n<p>CDN \u4e0d\u4ec5\u4ec5\u662f\u52a0\u901f\u5de5\u5177\uff0c\u8fd8\u5e38\u88ab\u7528\u4e8e\u63d0\u5347\u5b89\u5168\u6027\u548c\u53ef\u7528\u6027\uff1a<\/p>\n<ul>\n<li><strong>DDoS \u9632\u62a4\u4e0e\u6d41\u91cf\u6e05\u6d17<\/strong>\uff1a\u901a\u8fc7\u5927\u89c4\u6a21 Anycast \u7f51\u7edc\u5438\u6536\u6d41\u91cf\uff0c\u5e76\u5728\u8fb9\u7f18\u8fdb\u884c\u6e05\u6d17\uff0c\u4fdd\u62a4\u539f\u7ad9\u3002<\/li>\n<li><strong>Web \u5e94\u7528\u9632\u706b\u5899\uff08WAF\uff09<\/strong>\uff1a\u5728\u8fb9\u7f18\u963b\u6321\u5e38\u89c1\u7684 OWASP \u653b\u51fb\uff0c\u51cf\u5c11\u6076\u610f\u8bf7\u6c42\u5230\u8fbe Origin\u3002<\/li>\n<li><strong>\u8bbf\u95ee\u63a7\u5236\u4e0e\u7b7e\u540d URL<\/strong>\uff1a\u5bf9\u79c1\u6709\u8d44\u6e90\u4f7f\u7528\u7b7e\u540d URL \u6216 Token\uff0c\u9632\u6b62\u672a\u6388\u6743\u8bbf\u95ee\u4e0e\u76d7\u94fe\u3002<\/li>\n<li><strong>\u901f\u7387\u9650\u5236\u4e0e\u884c\u4e3a\u5206\u6790<\/strong>\uff1a\u5728 CDN \u5c42\u63a7\u5236\u8bf7\u6c42\u9891\u7387\u5e76\u505a\u5f02\u5e38\u68c0\u6d4b\uff0c\u51cf\u5c11\u6ee5\u7528\u548c\u722c\u866b\u538b\u529b\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\uff1a\u5982\u4f55\u6839\u636e\u4e1a\u52a1\u9009\u7528 CDN \u7b56\u7565<\/h2>\n<p>\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u5bf9 CDN \u7684\u9700\u6c42\u5404\u4e0d\u76f8\u540c\uff1a<\/p>\n<ul>\n<li><strong>\u9759\u6001\u7f51\u7ad9\u3001\u5a92\u4f53\u5206\u53d1\uff08\u56fe\u7247\/\u89c6\u9891\uff09<\/strong>\uff1a\u4f18\u5148\u4f7f\u7528\u8fb9\u7f18\u7f13\u5b58\u3001\u957f TTL\u3001\u5bf9\u8c61\u5b58\u50a8\u96c6\u6210\u4e0e\u5206\u7247\u652f\u6301\u3002\u5bf9\u4e8e\u8de8\u5883\u7528\u6237\uff0c\u9009\u62e9\u8986\u76d6\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761 \u7b49 PoP\uff0c\u7ed3\u5408\u9999\u6e2f\u670d\u52a1\u5668 \u6216 \u7f8e\u56fd\u670d\u52a1\u5668 \u53ef\u4f18\u5316\u8bbf\u95ee\u8def\u5f84\u3002<\/li>\n<li><strong>SaaS\/\u52a8\u6001 API 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