{"id":210303,"date":"2025-10-24T10:59:33","date_gmt":"2025-10-24T02:59:33","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210303\/"},"modified":"2025-10-24T10:59:34","modified_gmt":"2025-10-24T02:59:34","slug":"cdn%e6%8e%a8%e5%8a%a8%e7%9f%ad%e8%a7%86%e9%a2%91%e5%8a%a0%e9%80%9f%e6%99%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210303\/","title":{"rendered":"CDN\u63a8\u52a8\u77ed\u89c6\u9891\u52a0\u901f\u667a\u80fd\u5316\uff1a\u5b9e\u65f6\u8c03\u5ea6\u4e0e\u89c2\u770b\u4f53\u9a8c\u9769\u65b0"},"content":{"rendered":"<p>\u968f\u7740\u77ed\u89c6\u9891\u6d41\u91cf\u7684\u7206\u53d1\u5f0f\u589e\u957f\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5728\u89c6\u9891\u5206\u53d1\u94fe\u8def\u4e2d\u7684\u5730\u4f4d\u6108\u53d1\u91cd\u8981\u3002\u4f20\u7edf\u7684\u9759\u6001\u5185\u5bb9\u52a0\u901f\u5df2\u7ecf\u65e0\u6cd5\u6ee1\u8db3\u77ed\u89c6\u9891\u5bf9\u4f4e\u65f6\u5ef6\u3001\u7a33\u5b9a\u64ad\u653e\u548c\u4e2a\u6027\u5316\u63a8\u8350\u94fe\u8def\u7684\u82db\u523b\u8981\u6c42\u3002\u672c\u6587\u5c06\u4ece\u6280\u672f\u539f\u7406\u3001\u5b9e\u65f6\u8c03\u5ea6\u673a\u5236\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u4e0e\u4f20\u7edf\u65b9\u6848\u7684\u4f18\u52bf\u5bf9\u6bd4\u4ee5\u53ca\u5b9e\u9645\u9009\u8d2d\u5efa\u8bae\u7b49\u65b9\u9762\uff0c\u6df1\u5165\u63a2\u8ba8CDN\u5982\u4f55\u63a8\u52a8\u77ed\u89c6\u9891\u52a0\u901f\u667a\u80fd\u5316\uff0c\u4ece\u800c\u63d0\u5347\u7528\u6237\u89c2\u770b\u4f53\u9a8c\u4e0e\u8fd0\u8425\u6548\u7387\u3002<\/p>\n<h2>\u77ed\u89c6\u9891\u52a0\u901f\u9762\u4e34\u7684\u6838\u5fc3\u6311\u6218<\/h2>\n<p>\u77ed\u89c6\u9891\u670d\u52a1\u5177\u6709\u9ad8\u5e76\u53d1\u3001\u65f6\u5ef6\u654f\u611f\u3001\u5185\u5bb9\u66f4\u65b0\u9891\u7e41\u548c\u591a\u7801\u7387\u5206\u53d1\u7b49\u7279\u70b9\u3002\u5177\u4f53\u6311\u6218\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u77ac\u65f6\u6d41\u91cf\u6fc0\u589e\uff08\u70ed\u70b9\u89c6\u9891\/\u6d3b\u52a8\uff09\u5bfc\u81f4\u8fb9\u7f18\u7f13\u5b58\u538b\u529b\u9aa4\u589e\uff1b<\/li>\n<li>\u64ad\u653e\u542f\u52a8\u65f6\u5ef6\uff08TTFB\/\u9996\u5c4f\u65f6\u95f4\uff09\u4e0e\u9996\u5e27\u65f6\u95f4\u5bf9\u7559\u5b58\u5f71\u54cd\u663e\u8457\uff1b<\/li>\n<li>\u79fb\u52a8\u7f51\u7edc\u573a\u666f\u4e0b\u5e26\u5bbd\u6ce2\u52a8\u4e0e\u6296\u52a8\u5bfc\u81f4\u7684\u7f13\u51b2\u548c\u7801\u7387\u5207\u6362\u9891\u7e41\uff1b<\/li>\n<li>\u5168\u7403\u5316\u90e8\u7f72\u9700\u6c42\u5e26\u6765\u591a\u5730\u57df\u8986\u76d6\u3001\u5408\u89c4\u4e0e\u6210\u672c\u6743\u8861\u95ee\u9898\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u65e5\u97e9\u53ca\u4e1c\u5357\u4e9a\u8282\u70b9\u7684\u9009\u62e9\uff09\uff1b<\/li>\n<li>\u540e\u7aef\u5b9e\u65f6\u8c03\u5ea6\u3001\u65e5\u5fd7\u5206\u6790\u4e0eSLA\u4fdd\u969c\u5bf9\u8fd0\u7ef4\u81ea\u52a8\u5316\u3001\u667a\u80fd\u5316\u63d0\u51fa\u66f4\u9ad8\u8981\u6c42\u3002<\/li>\n<\/ul>\n<h2>CDN\u63a8\u52a8\u77ed\u89c6\u9891\u52a0\u901f\u667a\u80fd\u5316\u7684\u6280\u672f\u539f\u7406<\/h2>\n<h3>\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u667a\u80fd\u7f13\u5b58\u7b56\u7565<\/h3>\n<p>\u901a\u8fc7\u5728\u8fb9\u7f18\u8282\u70b9\u90e8\u7f72\u8ba1\u7b97\u80fd\u529b\uff0c\u5b9e\u73b0\u5b9e\u65f6\u8f6c\u7801\u3001\u5207\u7247\u5904\u7406\u548c\u7f13\u5b58\u7b56\u7565\u51b3\u7b56\u3002\u5e38\u89c1\u505a\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u52a8\u6001\u7f13\u5b58\u7b56\u7565\uff1a\u57fa\u4e8e\u70ed\u5ea6\u9884\u6d4b\uff08\u5982\u57fa\u4e8e\u5386\u53f2\u8bbf\u95ee\u5e8f\u5217\u7684\u65f6\u95f4\u5e8f\u5217\u9884\u6d4b\u6216\u6df1\u5ea6\u5b66\u4e60\u6a21\u578b\uff09\u8c03\u6574\u7f13\u5b58\u4fdd\u7559\u65f6\u95f4\uff08TTL\uff09\u4e0e\u7f13\u5b58\u66ff\u6362\u7b56\u7565\uff08LFU\/LRU\u6df7\u5408\u6216\u81ea\u9002\u5e94\u6743\u91cd\u7b56\u7565\uff09\u3002<\/li>\n<li>\u8fb9\u7f18\u8f6c\u7801\u4e0e\u5206\u5c42\u5b58\u50a8\uff1a\u5c06\u89c6\u9891\u5207\u7247\uff08HLS\/DASH\uff09\u5728\u8fb9\u7f18\u8fdb\u884c\u6309\u9700\u8f6c\u7801\uff0c\u63d0\u4f9b\u591a\u7801\u7387\u6d41\uff0c\u51cf\u5c11\u56de\u6e90\u538b\u529b\u5e76\u63d0\u9ad8\u51b7\u542f\u52a8\u901f\u5ea6\u3002<\/li>\n<li>\u8ba1\u7b97\u8fd1\u6e90\uff08Compute 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Buffer\uff09\u3002\u5bf9\u4e8e\u5927\u89c4\u6a21\u5206\u53d1\uff0c\u4f7f\u7528WebRTC-&gt;HLS\/DASH\u8f6c\u6362\u6216\u901a\u8fc7\u5206\u5c42\u6df7\u6d41+CDN\u8f6c\u53d1\u964d\u4f4e\u6210\u672c\u3002<\/li>\n<li>\u8fb9\u7f18\u5c31\u8fd1\u5408\u6d41\uff1a\u5728\u63a5\u5165\u5c42\u505a\u5408\u5e76\u4e0e\u8f6c\u53d1\uff0c\u51cf\u5c11\u8de8\u673a\u623f\u4f20\u8f93\u3002\u501f\u52a9\u9999\u6e2fVPS\u6216\u5176\u4ed6\u6d77\u5916\u670d\u52a1\u5668\u505a\u63a5\u5165\u524d\u5904\u7406\uff0c\u80fd\u6539\u5584\u533a\u57df\u7528\u6237\u7684\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<h3>\u70b9\u64ad\u4e0e\u4e2a\u6027\u5316\u63a8\u8350<\/h3>\n<p>\u70b9\u64ad\u573a\u666f\u5173\u6ce8\u51b7\u542f\u52a8\u4e0e\u7801\u7387\u5207\u6362\uff1a<\/p>\n<ul>\n<li>\u9884\u70ed\u4e0e\u9884\u53d6\uff08Prefetch\uff09\uff1a\u57fa\u4e8e\u63a8\u8350\u6a21\u578b\u5bf9\u7528\u6237\u53ef\u80fd\u611f\u5174\u8da3\u7684\u89c6\u9891\u8fdb\u884c\u9884\u53d6\u5230\u8fb9\u7f18\u8282\u70b9\uff0c\u51cf\u5c11\u9996\u6b21\u64ad\u653e\u5ef6\u8fdf\u3002<\/li>\n<li>\u5206\u7247\u4f18\u5316\uff1a\u91c7\u7528\u5c0f\u7247\u6bb5\u957f\u5ea6\uff08\u59822\u79d2\uff09\u914d\u5408HTTP\/3\u4ee5\u964d\u4f4e\u9996\u5c4f\u5ef6\u8fdf\uff0c\u540c\u65f6\u5229\u7528\u8fb9\u7f18\u8f6c\u7801\u5b9e\u73b0\u66f4\u7ec6\u7c92\u5ea6\u7684\u7801\u7387\u68af\u5ea6\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u667a\u80fd\u5316CDN\u4e0e\u4f20\u7edfCDN<\/h2>\n<p><strong>\u6027\u80fd\u5c42\u9762\uff1a<\/strong>\u667a\u80fd\u5316CDN\u901a\u8fc7\u5b9e\u65f6\u7f51\u7edc\u611f\u77e5\u4e0e\u8c03\u5ea6\u3001QUIC\u652f\u6301\u3001\u8fb9\u7f18\u8f6c\u7801\u7b49\u624b\u6bb5\u663e\u8457\u964d\u4f4e\u9996\u5c4f\u53ca\u9996\u5e27\u65f6\u95f4\u3001\u51cf\u5c11\u7f13\u51b2\u7387\u5e76\u63d0\u5347\u7a33\u5b9a\u6027\u3002<\/p>\n<p><strong>\u6210\u672c\u4e0e\u8d44\u6e90\u5229\u7528\uff1a<\/strong>\u867d\u7136\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u667a\u80fd\u8c03\u5ea6\u4f1a\u589e\u52a0\u8fb9\u7f18\u8282\u70b9\u7684\u8fd0\u7ef4\u6210\u672c\uff0c\u4f46\u901a\u8fc7\u51b7\u70ed\u5206\u5c42\u5b58\u50a8\u3001\u52a8\u6001\u56de\u6e90\u4e0e\u591a\u6e90\u62c9\u53d6\u53ef\u4ee5\u964d\u4f4e\u56de\u6e90\u5e26\u5bbd\u6210\u672c\u5e76\u7f13\u89e3\u6e90\u7ad9\u538b\u529b\u3002<\/p>\n<p><strong>\u53ef\u8fd0\u7ef4\u6027\u4e0eSLO\u4fdd\u969c\uff1a<\/strong>\u667a\u80fd\u5316\u7cfb\u7edf\u80fd\u81ea\u52a8\u5316\u54cd\u5e94\u7f51\u7edc\u6ce2\u52a8\u4e0e\u8282\u70b9\u6545\u969c\uff0c\u5bf9SLA\u627f\u8bfa\u66f4\u6709\u4fdd\u969c\uff1b\u800c\u4f20\u7edfCDN\u66f4\u591a\u4f9d\u8d56\u624b\u5de5\u7b56\u7565\u4e0e\u9759\u6001\u914d\u7f6e\u3002<\/p>\n<h2>\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\uff08\u9762\u5411\u7ad9\u957f\u4e0e\u4f01\u4e1a\uff09<\/h2>\n<h3>\u8bc4\u4f30\u9700\u6c42\u4e0e\u6307\u6807<\/h3>\n<p>\u5728\u9009\u62e9CDN\u6216\u670d\u52a1\u5668\u8d44\u6e90\u65f6\uff0c\u9996\u5148\u660e\u786e\u4e1a\u52a1\u9700\u6c42\uff1a<\/p>\n<ul>\n<li>\u76ee\u6807\u7528\u6237\u5730\u57df\uff1a\u82e5\u91cd\u70b9\u5728\u4e9a\u592a\u5730\u533a\uff0c\u8003\u8651\u90e8\u7f72\u5728\u9999\u6e2f\u670d\u52a1\u5668\u3001\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u6216\u65b0\u52a0\u5761\u670d\u52a1\u5668\u7684\u8282\u70b9\u4ee5\u964d\u4f4e\u8de8\u5883\u5ef6\u8fdf\u3002<\/li>\n<li>\u5b9e\u65f6\u6027\u8981\u6c42\uff1a\u76f4\u64ad\u4f4e\u5ef6\u8fdf\u5e94\u4f18\u5148\u652f\u6301WebRTC\/SRT\u548c\u8fb9\u7f18\u8ba1\u7b97\u7684\u65b9\u6848\uff1b\u70b9\u64ad\u53ef\u4fa7\u91cd\u7f13\u5b58\u7b56\u7565\u4e0e\u8f6c\u7801\u80fd\u529b\u3002<\/li>\n<li>\u5408\u89c4\u4e0e\u6570\u636e\u4e3b\u6743\uff1a\u6d77\u5916\u90e8\u7f72\u9700\u8003\u8651\u5f53\u5730\u5408\u89c4\u8981\u6c42\uff0c\u9009\u62e9\u5408\u9002\u7684\u57df\u540d\u6ce8\u518c\u548c\u6d77\u5916\u670d\u52a1\u5668\u63d0\u4f9b\u5546\u8fdb\u884c\u843d\u5730\u3002<\/li>\n<\/ul>\n<h3>\u67b6\u6784\u4e0e\u4f9b\u5e94\u5546\u9009\u62e9\u8981\u70b9<\/h3>\n<p>\u9009\u578b\u65f6\u5173\u6ce8\u4ee5\u4e0b\u6280\u672f\u80fd\u529b\uff1a<\/p>\n<ul>\n<li>\u591a\u534f\u8bae\u652f\u6301\uff08HTTP\/2\u3001HTTP\/3\u3001QUIC\u3001WebRTC\u3001SRT\uff09\uff1b<\/li>\n<li>\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u8f6c\u7801\u80fd\u529b\uff08\u652f\u6301\u5bb9\u5668\u5316\u51fd\u6570\u3001GPU\u6216\u786c\u4ef6\u52a0\u901f\u7684\u8f6c\u7801\uff09\uff1b<\/li>\n<li>\u667a\u80fd\u8c03\u5ea6\u4e0e\u591aCDN\u8c03\u5ea6\u80fd\u529b\uff08Anycast\u4e0eDNS\/HTTP\u8def\u5f84\u8c03\u5ea6\u7ed3\u5408\uff09\uff1b<\/li>\n<li>\u53ef\u89c2\u6d4b\u6027\uff08\u7aef\u5230\u7aef\u9065\u6d4b\u3001\u65e5\u5fd7\u6d41\u3001\u5b9e\u65f6\u5206\u6790\u4e0e\u544a\u8b66\uff09\uff1b<\/li>\n<li>\u652f\u6301\u7075\u6d3b\u90e8\u7f72\uff1a\u53ef\u9009\u62e9\u516c\u5171CDN\u3001\u79c1\u6709\u52a0\u901f\u8282\u70b9\u6216\u6df7\u5408\u90e8\u7f72\uff08\u5728\u81ea\u6709\u9999\u6e2fVPS\u6216\u7f8e\u56fdVPS\u4e0a\u5e03\u7f6e\u8fb9\u7f18\u8282\u70b9\uff09\u3002<\/li>\n<\/ul>\n<h3>\u6210\u672c\u63a7\u5236\u7b56\u7565<\/h3>\n<p>\u4e3a\u4e86\u5728\u6027\u80fd\u4e0e\u6210\u672c\u95f4\u53d6\u5f97\u5e73\u8861\uff0c\u53ef\u4ee5\u91c7\u7528\uff1a<\/p>\n<ul>\n<li>\u6309\u9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