{"id":209491,"date":"2025-10-23T15:49:01","date_gmt":"2025-10-23T07:49:01","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209491\/"},"modified":"2025-10-23T15:49:02","modified_gmt":"2025-10-23T07:49:02","slug":"cdn-7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209491\/","title":{"rendered":"CDN\u52a0\u901f\u539f\u7406\u4e0e\u5e94\u7528\u573a\u666f\uff1a\u4ece\u7f13\u5b58\u5230\u667a\u80fd\u8c03\u5ea6\u7684\u5b9e\u6218\u89e3\u6790"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u4e92\u8054\u7f51\u65f6\u4ee3\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u7ecf\u6210\u4e3a\u63d0\u5347\u7f51\u7ad9\u4e0e\u5e94\u7528\u6027\u80fd\u7684\u6838\u5fc3\u6280\u672f\u3002\u4ece\u6700\u57fa\u7840\u7684\u9759\u6001\u7f13\u5b58\u5230\u57fa\u4e8e\u8fb9\u7f18\u7684\u667a\u80fd\u8c03\u5ea6\uff0c\u4e86\u89e3CDN\u7684\u539f\u7406\u548c\u5b9e\u9645\u5e94\u7528\u573a\u666f\uff0c\u5bf9\u4e8e\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u505a\u51fa\u67b6\u6784\u4e0e\u9009\u578b\u51b3\u7b56\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ece\u6280\u672f\u7ec6\u8282\u5c42\u9762\u62c6\u89e3CDN\u5982\u4f55\u5de5\u4f5c\u3001\u9002\u7528\u573a\u666f\u3001\u4e0e\u5404\u7c7b\u670d\u52a1\u5668\u90e8\u7f72\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS\u7b49\uff09\u7684\u534f\u540c\u4f18\u52bf\uff0c\u5e76\u7ed9\u51fa\u5207\u5b9e\u53ef\u884c\u7684\u9009\u578b\u5efa\u8bae\u3002<\/p>\n<h2>CDN\u7684\u57fa\u672c\u539f\u7406\uff1a\u7f13\u5b58\u4e0e\u5206\u53d1\u7684\u53cc\u6838\u673a\u5236<\/h2>\n<p>CDN\u7684\u6838\u5fc3\u76ee\u6807\u662f\u5c06\u5185\u5bb9\u9760\u8fd1\u7528\u6237\uff0c\u964d\u4f4e\u5ef6\u8fdf\u3001\u51cf\u8f7b\u6e90\u7ad9\u538b\u529b\u5e76\u63d0\u5347\u53ef\u7528\u6027\u3002\u5176\u5b9e\u73b0\u4e3b\u8981\u4f9d\u8d56\u4e24\u5927\u673a\u5236\uff1a\u7f13\u5b58\uff08caching\uff09\u4e0e\u5206\u53d1\uff08distribution\uff09\u3002<\/p>\n<h3>\u7f13\u5b58\u5c42\u7ea7\u4e0e\u7f13\u5b58\u7b56\u7565<\/h3>\n<p>CDN\u8282\u70b9\u901a\u5e38\u90e8\u7f72\u4e3a\u591a\u4e2aPoP\uff08Point 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Mid-Tier Cache\uff09<\/strong>\uff1a\u5728\u8fb9\u7f18\u8282\u70b9\u4e0e\u6e90\u7ad9\u4e4b\u95f4\u8bbe\u7f6e\u4e2d\u95f4\u7f13\u5b58\u5c42\uff0c\u51cf\u5c11\u6e90\u7ad9\u8bf7\u6c42\uff0c\u5c24\u5176\u9002\u5408\u9ad8\u5e76\u53d1\u7a81\u53d1\u6d41\u91cf\u573a\u666f\u3002<\/li>\n<li><strong>\u7f13\u5b58\u9884\u70ed\u4e0e\u4e3b\u52a8\u63a8\u9001<\/strong>\uff1a\u5bf9\u4e8e\u5927\u89c4\u6a21\u53d1\u5e03\uff08\u4f8b\u5982\u8f6f\u4ef6\u66f4\u65b0\u6216\u8425\u9500\u6d3b\u52a8\uff09\uff0c\u53ef\u4ee5\u91c7\u7528Push\uff08\u628a\u5bf9\u8c61\u63a8\u9001\u5230\u6307\u5b9aPoP\uff09\u6216\u9884\u70ed\uff08\u9884\u8bf7\u6c42\uff09\u6765\u907f\u514d\u51b7\u7f13\u5b58\u9020\u6210\u7684\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>\u5185\u5bb9\u83b7\u53d6\u6a21\u5f0f\uff1aPull\u4e0ePush<\/h3>\n<p>\u4e24\u79cd\u83b7\u53d6\u6a21\u5f0f\u5404\u6709\u5229\u5f0a\uff1a<\/p>\n<ul>\n<li><strong>Origin Pull\uff08\u6309\u9700\u62c9\u53d6\uff09<\/strong>\uff1a\u9996\u6b21\u8bf7\u6c42\u65f6\u4ece\u6e90\u7ad9\u62c9\u53d6\u5e76\u7f13\u5b58\uff0c\u8fd0\u7ef4\u6210\u672c\u4f4e\u3001\u7ba1\u7406\u7b80\u5355\uff0c\u4f46\u53ef\u80fd\u51fa\u73b0\u9996\u8bf7\u6c42\u5ef6\u8fdf\u3002<\/li>\n<li><strong>Origin Push\uff08\u4e3b\u52a8\u63a8\u9001\uff09<\/strong>\uff1a\u53d1\u5e03\u65f6\u4e3b\u52a8\u5c06\u5185\u5bb9\u5206\u53d1\u5230PoP\uff0c\u9002\u5408\u5927\u6587\u4ef6\u6216\u9700\u4fdd\u8bc1\u9996\u6b21\u8bf7\u6c42\u4f4e\u5ef6\u8fdf\u7684\u573a\u666f\uff0c\u4f46\u9700\u8981\u66f4\u591a\u7ba1\u7406\u548c\u5e26\u5bbd\u3002<\/li>\n<\/ul>\n<h3>\u534f\u8bae\u4e0e\u4f20\u8f93\u4f18\u5316<\/h3>\n<p>\u73b0\u4ee3CDN\u9664\u4e86\u4f20\u7edf\u7684TCP+TLS\u4f18\u5316\u5916\uff0c\u8fd8\u5e7f\u6cdb\u652f\u6301HTTP\/2\u3001HTTP\/3\u4e0eQUIC\uff0c\u63d0\u5347\u5e76\u53d1\u8fde\u63a5\u6548\u7387\u4e0e\u4e22\u5305\u5bb9\u5fcd\u5ea6\u3002\u5185\u5bb9\u538b\u7f29\uff08gzip\u3001Brotli\uff09\u3001\u56fe\u7247\u81ea\u52a8\u4f18\u5316\uff08WebP\u3001AVIF\u8f6c\u6362\u3001\u6309\u9700\u88c1\u526a\uff09\u3001TLS\u4f1a\u8bdd\u590d\u7528\u548cOCSP Stapling\u90fd\u662f\u964d\u4f4e\u5ef6\u8fdf\u4e0e\u5e26\u5bbd\u4f7f\u7528\u7684\u5e38\u89c1\u6280\u672f\u3002<\/p>\n<h2>\u667a\u80fd\u8c03\u5ea6\uff1a\u4eceAnycast\u5230\u8fb9\u7f18\u8ba1\u7b97\u7684\u6f14\u8fdb<\/h2>\n<p>\u968f\u7740\u7f51\u7edc\u590d\u6742\u6027\u589e\u52a0\uff0cCDN\u4e0d\u518d\u662f\u7b80\u5355\u7684\u9759\u6001\u7f13\u5b58\u7f51\u7edc\uff0c\u800c\u662f\u5177\u5907\u667a\u80fd\u8def\u7531\u3001\u6d41\u91cf\u63a7\u5236\u4e0e\u8fb9\u7f18\u8ba1\u7b97\u80fd\u529b\u7684\u5e73\u53f0\u3002<\/p>\n<h3>\u7f51\u7edc\u5c42\u9762\u7684\u667a\u80fd\u8def\u7531<\/h3>\n<ul>\n<li><strong>Anycast\u4e0eBGP\u4f18\u5316<\/strong>\uff1a\u901a\u8fc7Anycast\u5ba3\u5e03\u540c\u4e00IP\u5230\u591a\u4e2aPoP\uff0c\u7528\u6237\u8bf7\u6c42\u4f1a\u7531\u7f51\u7edc\u81ea\u52a8\u8def\u7531\u5230\u62d3\u6251\u4e0a\u6700\u8fd1\u6216\u6700\u4f18\u7684\u8282\u70b9\uff0c\u9002\u7528\u4e8e\u5168\u7403\u5206\u5e03\u7684\u670d\u52a1\u3002<\/li>\n<li><strong>\u5b9e\u65f6\u94fe\u8def\u8d28\u91cf\u611f\u77e5<\/strong>\uff1a\u57fa\u4e8e\u7f51\u7edc\u5ef6\u8fdf\u3001\u4e22\u5305\u7387\u4e0e\u5e26\u5bbd\u7684\u5b9e\u65f6\u63a2\u6d4b\uff0cCDN\u4f1a\u5c06\u6d41\u91cf\u5207\u6362\u81f3\u8d28\u91cf\u66f4\u597d\u7684\u94fe\u8def\u6216PoP\uff0c\u51cf\u5c11\u6296\u52a8\u4e0e\u91cd\u4f20\u3002<\/li>\n<li><strong>Geo-Steering\uff08\u5730\u7406\u8c03\u5ea6\uff09<\/strong>\uff1a\u6309\u5730\u57df\u3001ISP\u6216\u7b56\u7565\u628a\u6d41\u91cf\u5bfc\u5411\u6307\u5b9a\u6570\u636e\u4e2d\u5fc3\uff08\u4f8b\u5982\u5c06\u4e2d\u56fd\u9999\u6e2f\u7528\u6237\u8def\u7531\u5230\u9999\u6e2f\u670d\u52a1\u5668\u6216\u9999\u6e2fVPS\u8282\u70b9\uff09\uff0c\u6ee1\u8db3\u5408\u89c4\u3001\u5ef6\u8fdf\u6216\u8fd0\u8425\u6210\u672c\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h3>\u5e94\u7528\u5c42\u667a\u80fd\u8c03\u5ea6\u4e0e\u8fb9\u7f18\u8ba1\u7b97<\/h3>\n<p>\u73b0\u4ee3CDN\u652f\u6301\u5728\u8fb9\u7f18\u8fd0\u884c\u81ea\u5b9a\u4e49\u903b\u8f91\uff08\u5982Cloudflare Workers\u3001AWS Lambda@Edge\uff09\u3002\u8fd9\u5e26\u6765\u4e86\uff1a<\/p>\n<ul>\n<li>\u52a8\u6001\u5185\u5bb9\u5c31\u8fd1\u54cd\u5e94\uff0c\u51cf\u5c11\u56de\u6e90\u6b21\u6570\uff0c\u9002\u5408API\u7f51\u5173\u4e0eA\/B\u6d4b\u8bd5\u3002<\/li>\n<li>\u8fb9\u7f18\u505a\u4e2a\u6027\u5316\u6e32\u67d3\u3001\u9274\u6743\u4e0e\u5b89\u5168\u68c0\u67e5\uff08WAF\u3001Bot\u7ba1\u7406\uff09\uff0c\u51cf\u8f7b\u6e90\u7ad9\u8d1f\u8f7d\u5e76\u63d0\u5347\u5b89\u5168\u6027\u3002<\/li>\n<li>\u8fb9\u7f18\u7f13\u5b58\u7ec6\u7c92\u5ea6\u63a7\u5236\uff0c\u4f8b\u5982\u57fa\u4e8e\u8bf7\u6c42\u5934\u6216\u5730\u7406\u4fe1\u606f\u8fd4\u56de\u4e0d\u540c\u5185\u5bb9\u3002<\/li>\n<\/ul>\n<h2>\u5178\u578b\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u5efa\u8bae<\/h2>\n<h3>\u9759\u6001\u7ad9\u70b9\u4e0e\u8d44\u6e90\u6587\u4ef6\uff08\u56fe\u7247\u3001JS\/CSS\uff09<\/h3>\n<p>\u8fd9\u662fCDN\u6700\u57fa\u672c\u4e14\u6700\u6709\u6548\u7684\u4f7f\u7528\u573a\u666f\u3002\u901a\u8fc7\u5408\u7406\u8bbe\u7f6eCache-Control\u3001\u5f00\u542fBrotli\u538b\u7f29\u548c\u56fe\u7247\u683c\u5f0f\u8f6c\u6362\uff0c\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u9875\u9762\u9996\u5c4f\u65f6\u95f4\u4e0e\u5e26\u5bbd\u6210\u672c\u3002\u5bf9\u4e8e\u9762\u5411\u9999\u6e2f\u6216\u4e1c\u5357\u4e9a\u7528\u6237\u7684\u7f51\u7ad9\uff0c\u53ef\u7ed3\u5408\u9999\u6e2f\u670d\u52a1\u5668\u6216\u9999\u6e2fVPS\u505a\u6e90\u7ad9\u90e8\u7f72\u4ee5\u8fdb\u4e00\u6b65\u4f18\u5316\u3002<\/p>\n<h3>\u89c6\u9891\u70b9\u64ad\u4e0e\u76f4\u64ad<\/h3>\n<p>\u89c6\u9891\u9700\u8981\u5904\u7406\u9ad8\u5e26\u5bbd\u4e0e\u5e76\u53d1\uff0c\u5e38\u7528\u7684\u4f18\u5316\u5305\u62ec\u5206\u6bb5\u4f20\u8f93\uff08HLS\/DASH\uff09\u3001\u591a\u7801\u7387\u81ea\u9002\u5e94\u3001\u8fb9\u7f18\u7f13\u5b58\u4e0eP2P\u6df7\u5408\u5206\u53d1\u3002\u5bf9\u56fd\u9645\u7528\u6237\uff08\u5982\u4f7f\u7528\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\uff09\u63d0\u4f9b\u591a\u5730CDN\u8282\u70b9\u80fd\u4fdd\u8bc1\u8de8\u5883\u64ad\u653e\u4f53\u9a8c\u3002<\/p>\n<h3>\u52a8\u6001API\u4e0e\u5fae\u670d\u52a1<\/h3>\n<p>\u52a8\u6001\u5185\u5bb9\u96be\u4ee5\u957f\u65f6\u95f4\u7f13\u5b58\uff0c\u4f46\u53ef\u91c7\u7528\u4ee5\u4e0b\u7b56\u7565\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e0d\u5e38\u53d8\u66f4\u7684\u8d44\u6e90\u4f7f\u7528\u77edTTL\u6216\u57fa\u4e8e\u6807\u7b7e\u7684\u7f13\u5b58\uff08cache 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