{"id":209625,"date":"2025-10-23T19:18:47","date_gmt":"2025-10-23T11:18:47","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209625\/"},"modified":"2025-10-23T19:18:48","modified_gmt":"2025-10-23T11:18:48","slug":"cdn-ott","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209625\/","title":{"rendered":"\u6253\u9020\u96f6\u5361\u987f\u4f53\u9a8c\uff1aCDN\u5728OTT\u5e73\u53f0\u7684\u5e94\u7528\u4e0e\u4f18\u5316\u65b9\u6848"},"content":{"rendered":"<p>\u968f\u7740OTT\uff08Over-The-Top\uff09\u89c6\u9891\u670d\u52a1\u7684\u5e7f\u6cdb\u666e\u53ca\uff0c\u7528\u6237\u5bf9\u201c\u96f6\u5361\u987f\u201d\u4f53\u9a8c\u7684\u671f\u671b\u8d8a\u6765\u8d8a\u9ad8\u3002\u4ece\u70b9\u64ad\uff08VOD\uff09\u5230\u5927\u89c4\u6a21\u76f4\u64ad\uff08Live\uff09\uff0c\u5728\u4e0d\u540c\u5730\u57df\u3001\u7f51\u7edc\u6761\u4ef6\u4e0b\u786e\u4fdd\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u53ef\u7528\u548c\u6d41\u7545\u64ad\u653e\uff0c\u5df2\u6210\u4e3a\u5e73\u53f0\u67b6\u6784\u8bbe\u8ba1\u7684\u6838\u5fc3\u6311\u6218\u3002\u672c\u6587\u5c06\u4ece\u6280\u672f\u539f\u7406\u51fa\u53d1\uff0c\u7ed3\u5408\u5b9e\u9645\u5e94\u7528\u573a\u666f\uff0c\u8be6\u7ec6\u5256\u6790CDN\u5728OTT\u5e73\u53f0\u4e2d\u7684\u5173\u952e\u4f5c\u7528\u4e0e\u4f18\u5316\u65b9\u6848\uff0c\u5e76\u7ed9\u51fa\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u7684\u9009\u8d2d\u4e0e\u5b9e\u65bd\u5efa\u8bae\u3002<\/p>\n<h2>CDN\u5728OTT\u5e73\u53f0\u4e2d\u7684\u57fa\u672c\u539f\u7406<\/h2>\n<p>CDN\uff08Content 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Compute\uff09\uff1a\u5728\u8fb9\u7f18POP\u8fd0\u884c\u5c0f\u578b\u811a\u672c\u6216\u51fd\u6570\uff08Worker\uff09\uff0c\u53ef\u505atoken\u9274\u6743\u3001\u52a8\u6001\u8f6c\u7801\u3001URL\u91cd\u5199\u3001\u5ef6\u8fdf\u654f\u611f\u7684ABR\u51b3\u7b56\uff0c\u907f\u514d\u56de\u6e90\u3002<\/li>\n<li>\u667a\u80fd\u8c03\u5ea6\uff1a\u4f9d\u636e\u5b9e\u65f6\u7f51\u7edc\u8d28\u91cf\u3001POP\u8d1f\u8f7d\u3001CDN\u4f9b\u5e94\u5546SLA\u505a\u591aCDN\u8c03\u5ea6\u6216DNS\u5c42\u9762\u6743\u91cd\u8c03\u6574\uff0c\u4fdd\u969c\u9ad8\u5e76\u53d1\u6d3b\u52a8\u671f\u95f4\u7684\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u8981\u70b9<\/h2>\n<p>\u4e0d\u540cOTT\u573a\u666f\u5bf9CDN\u7684\u9700\u6c42\u5404\u6709\u4fa7\u91cd\uff0c\u5e38\u89c1\u573a\u666f\u4e0e\u5bf9\u5e94\u4f18\u5316\uff1a<\/p>\n<h3>\u5927\u89c4\u6a21\u76f4\u64ad\uff08\u4f53\u80b2\u8d5b\u4e8b\u3001\u9881\u5956\u5178\u793c\uff09<\/h3>\n<ul>\n<li>\u4f7f\u7528\u76f4\u64ad\u4e13\u7528CDN\u6216\u5f00\u542f\u76f4\u64ad\u52a0\u901f\uff0c\u652f\u6301\u4f4e\u5ef6\u8fdf\u534f\u8bae\u4e0e\u591a\u5c42\u7f13\u5b58\u67b6\u6784\u3002<\/li>\n<li>\u5728\u9ad8\u5e76\u53d1\u671f\u95f4\u542f\u7528Origin Shield\uff08\u4e2d\u95f4\u56de\u6e90\u5c42\uff09\u51cf\u5c11\u5bf9\u6e90\u7ad9\u7684\u51b2\u51fb\uff0c\u907f\u514d\u6e90\u7ad9\u6210\u4e3a\u74f6\u9888\u3002<\/li>\n<li>\u538b\u529b\u6d4b\u8bd5\u4e0e\u6d41\u91cf\u56de\u653e\uff1a\u9884\u5148\u8fdb\u884cSST\/chaos\u6d4b\u8bd5\uff0c\u6a21\u62df\u5cf0\u503c\u5e76\u9a8c\u8bc1\u5207\u7247\u4e0b\u53d1\u4e0e\u7f13\u5b58\u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<h3>\u70b9\u64ad\uff08VOD\uff09\u4e0e\u957f\u5c3e\u5185\u5bb9<\/h3>\n<ul>\n<li>\u5bf9\u70ed\u70b9\u5185\u5bb9\u91c7\u7528\u957fTTL\u5e76\u505a\u4e3b\u52a8\u9884\u70ed\uff1b\u5bf9\u957f\u5c3e\u5185\u5bb9\u91c7\u7528\u6309\u9700\u62c9\u53d6\uff0c\u7ed3\u5408\u538b\u7f29\u4e0e\u5206\u5757\u964d\u4f4e\u5b58\u50a8\u4e0e\u4f20\u8f93\u6210\u672c\u3002<\/li>\n<li>\u8003\u8651\u8fb9\u7f18\u8f6c\u7801\u6216\u591a\u7801\u7387\u9884\u751f\u6210\uff08\u591a\u5206\u8fa8\u7387\u3001\u591a\u7801\u7387\uff09\u4ee5\u652f\u6301ABR\uff0c\u51cf\u5c11\u64ad\u653e\u5361\u987f\u3002<\/li>\n<\/ul>\n<h3>\u8de8\u5883\u5206\u53d1\uff08\u9999\u6e2f\u3001\u7f8e\u56fd\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7b49\uff09<\/h3>\n<ul>\n<li>\u9009\u62e9\u5728\u76ee\u6807\u5e02\u573a\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u9644\u8fd1\u6709\u4e30\u5bccPOP\u7684CDN\uff0c\u907f\u514d\u8de8\u6d0b\u8df3\u6570\u8fc7\u591a\u3002<\/li>\n<li>\u5bf9\u4e9a\u592a\u7528\u6237\uff08\u65e5\u672c\u670d\u52a1\u5668\u3001\u97e9\u56fd\u670d\u52a1\u5668\u3001\u65b0\u52a0\u5761\u670d\u52a1\u5668\uff09\u53ef\u4f18\u5148\u9009\u62e9\u5728\u8be5\u533a\u57df\u5185\u5177\u6709\u9ad8\u6ea2\u51fa\u80fd\u529b\u7684CDN\u6216\u79c1\u6709POP\u3002<\/li>\n<li>\u7ed3\u5408\u6d77\u5916VPS\u6216\u4e13\u7ebf\u8282\u70b9\u90e8\u7f72\u56de\u6e90\u8282\u70b9\uff0c\u63d0\u5347\u56de\u6e90\u5e26\u5bbd\u4e0e\u7a33\u5b9a\u6027\uff0c\u51cf\u5c11\u8de8\u5883\u94fe\u8def\u6ce2\u52a8\u5e26\u6765\u7684\u91cd\u8bd5\u3002<\/li>\n<\/ul>\n<h2>\u4e0e\u4f20\u7edf\u67b6\u6784\u7684\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u4e0e\u4ec5\u9760\u6e90\u7ad9\u6216\u5355\u4e00\u533a\u57df\u90e8\u7f72\u76f8\u6bd4\uff0cCDN\u5728\u4ee5\u4e0b\u65b9\u9762\u63d0\u4f9b\u660e\u663e\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li>\u5ef6\u8fdf\u663e\u8457\u964d\u4f4e\uff1a\u901a\u8fc7\u5730\u7406\u5c31\u8fd1\u5206\u53d1\uff0c\u51cf\u5c11\u8de8\u5883RTT\uff0c\u63d0\u5347\u9996\u6b21\u64ad\u653e\u65f6\u95f4\uff08TTFB\/TTI\uff09\u3002<\/li>\n<li>\u5f39\u6027\u6269\u5c55\uff1a\u5e94\u5bf9\u77ac\u65f6\u6d41\u91cf\u5cf0\u503c\u65f6\uff0cCDN\u8fb9\u7f18\u627f\u62c5\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42\uff0c\u4fdd\u62a4\u6e90\u7ad9\u3002<\/li>\n<li>\u6210\u672c\u4f18\u5316\uff1a\u901a\u8fc7\u7f13\u5b58\u53bb\u4e2d\u5fc3\u5316\uff0c\u51cf\u5c11\u6e90\u7ad9\u5e26\u5bbd\u6210\u672c\u4e0e\u516c\u7f51\u51fa\u53e3\u538b\u529b\u3002<\/li>\n<li>\u53ef\u9760\u6027\u63d0\u5347\uff1a\u591aPOP\u3001\u591a\u7ebf\u8def\u4e0e\u591aCDN\u7b56\u7565\u964d\u4f4e\u5355\u70b9\u6545\u969c\u98ce\u9669\uff0c\u63d0\u5347SLA\u8fbe\u6210\u7387\u3002<\/li>\n<\/ul>\n<h2>\u9009\u578b\u5efa\u8bae\u4e0e\u5b9e\u65bd\u6b65\u9aa4<\/h2>\n<p>\u9762\u5411\u7ad9\u957f\u548c\u4f01\u4e1a\u7528\u6237\uff0c\u9009\u62e9\u4e0e\u90e8\u7f72CDN\u65f6\u53ef\u6309\u4ee5\u4e0b\u6d41\u7a0b\u8fdb\u884c\uff1a<\/p>\n<h3>\u9700\u6c42\u5206\u6790\u4e0ePOC<\/h3>\n<ul>\n<li>\u660e\u786e\u4e1a\u52a1\u91cf\u7ea7\uff08\u5e76\u53d1\u7528\u6237\u3001\u5e73\u5747\u7801\u7387\uff09\u3001\u8986\u76d6\u5730\u57df\uff08\u9999\u6e2f\/\u7f8e\u56fd\/\u65e5\u672c\/\u97e9\u56fd\/\u65b0\u52a0\u5761\u7b49\uff09\u548c\u5173\u952eKPI\uff08\u542f\u52a8\u65f6\u95f4\u3001\u9996\u5e27\u65f6\u95f4\u3001\u91cd\u7f13\u51b2\u7387\uff09\u3002<\/li>\n<li>\u5f00\u5c55POC\uff1a\u5728\u5178\u578b\u8282\u70b9\uff08\u5982\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u9644\u8fd1POP\uff09\u505a\u771f\u5b9e\u7f51\u7edc\u73af\u5883\u6d4b\u8bd5\uff0c\u91c7\u96c6\u52a0\u8f7d\u65f6\u95f4\u3001\u7f13\u5b58\u547d\u4e2d\u7387\u4e0e\u4e22\u5305\u7387\u3002<\/li>\n<\/ul>\n<h3>\u6280\u672f\u80fd\u529b\u4e0e\u7279\u6027\u5bf9\u6bd4<\/h3>\n<ul>\n<li>\u534f\u8bae\u652f\u6301\uff1a\u662f\u5426\u652f\u6301HTTP\/2\u3001QUIC\/HTTP3\u3001TLS\u7279\u6027\u4e0eChunked CMAF\u3002<\/li>\n<li>\u8fb9\u7f18\u80fd\u529b\uff1a\u662f\u5426\u652f\u6301\u8fb9\u7f18\u8ba1\u7b97\u3001\u5b9e\u65f6\u65e5\u5fd7\u3001WebSocket\/RTC\u900f\u4f20\u7b49\u3002<\/li>\n<li>\u8fd0\u7ef4\u4e0e\u76d1\u63a7\uff1a\u662f\u5426\u63d0\u4f9b\u5b9e\u65f6\u76d1\u63a7\u3001\u544a\u8b66\u3001\u56de\u6e90\u5206\u6790\u4e0eAPI\u7ea7\u63a7\u5236\uff08\u5982\u6279\u91cfPURGE\uff09\u3002<\/li>\n<li>\u591aCDN\u4e0eDNS\u7b56\u7565\uff1a\u662f\u5426\u65b9\u4fbf\u505a\u591a\u4f9b\u5e94\u5546\u5207\u6362\u4e0e\u667a\u80fd\u8def\u7531\u3002<\/li>\n<\/ul>\n<h3>\u90e8\u7f72\u4e0e\u4f18\u5316\u5efa\u8bae<\/h3>\n<ul>\n<li>\u5206\u5c42\u7f13\u5b58\u67b6\u6784\uff1a\u8fb9\u7f18POP + \u533a\u57df\u4e2d\u95f4\u5c42 + \u6e90\u7ad9\uff08Origin 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