{"id":210187,"date":"2025-10-24T07:21:00","date_gmt":"2025-10-23T23:21:00","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210187\/"},"modified":"2025-10-24T07:21:01","modified_gmt":"2025-10-23T23:21:01","slug":"cdn-312","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210187\/","title":{"rendered":"\u9ad8\u5e76\u53d1\u65f6\u4ee3\u7684CDN\u8fdb\u5316\uff1a\u6027\u80fd\u3001\u8fb9\u7f18\u4e0e\u667a\u80fd\u8c03\u5ea6"},"content":{"rendered":"<p>\u5728\u6d41\u91cf\u7206\u53d1\u4e0e\u4f4e\u5ef6\u8fdf\u8981\u6c42\u5e76\u5b58\u7684\u4eca\u5929\uff0cCDN\uff08\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u5df2\u7531\u5355\u7eaf\u7684\u9759\u6001\u5185\u5bb9\u52a0\u901f\u6f14\u8fdb\u4e3a\u5177\u5907\u8fb9\u7f18\u8ba1\u7b97\u548c\u667a\u80fd\u8c03\u5ea6\u80fd\u529b\u7684\u5206\u5e03\u5f0f\u5e73\u53f0\u3002\u672c\u6587\u56f4\u7ed5 CDN 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\u7684\u91c7\u7528\u663e\u8457\u964d\u4f4e\u4e86\u63e1\u624b\u5ef6\u8fdf\u548c\u5934\u90e8\u963b\u585e\uff0c\u63d0\u5347\u5e76\u53d1\u5c0f\u6587\u4ef6\u8bf7\u6c42\u7684\u6548\u7387\u3002<\/li>\n<li>\u5728\u4f20\u8f93\u5c42\u8fd8\u4f1a\u4f7f\u7528 BBR \u7b49\u62e5\u585e\u63a7\u5236\u7b97\u6cd5\u4ee5\u63d0\u9ad8\u5e26\u5bbd\u5229\u7528\u7387\uff0c\u7ed3\u5408\u8fde\u63a5\u590d\u7528\u3001Keep-Alive \u548c\u524d\u5411\u7ea0\u9519\uff08FEC\uff09\u6765\u589e\u5f3a\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n<h3>3. \u8fb9\u7f18\u8ba1\u7b97\u4e0e\u670d\u52a1\u5316<\/h3>\n<ul>\n<li>\u5c06\u8ba1\u7b97\u63a8\u5230\u8fb9\u7f18\uff08Edge Compute\uff09\u80fd\u5728 PoP \u5c42\u9762\u6267\u884c\u81ea\u5b9a\u4e49\u903b\u8f91\uff0c\u5982 A\/B 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WebRTC\uff0c\u4f7f\u7528\u8fb9\u7f18\u8f6c\u53d1\u4e0e\u5206\u7247\u7f13\u5b58\uff0c\u51cf\u5c11\u6e90\u7ad9\u5e26\u5bbd\u5cf0\u503c\u3002<\/li>\n<li>\u91c7\u7528\u591a\u5c42\u7f13\u5b58\u548c\u6d41\u63a7\u673a\u5236\uff0c\u7ed3\u5408\u901f\u7387\u9650\u5236\u4e0e\u8fb9\u7f18\u8f6c\u7801\uff08adaptive bitrate\uff09\u6765\u5e94\u5bf9\u540c\u65f6\u5728\u7ebf\u6570\u5341\u4e07\u7684\u5e76\u53d1\u7528\u6237\u3002<\/li>\n<\/ul>\n<h3>\u7535\u5546\u4e0e\u70ed\u70b9\u6d3b\u52a8<\/h3>\n<ul>\n<li>\u5927\u4fc3\u671f\u95f4\u5e38\u89c1\u7684 Cache Stampede\uff08\u7f13\u5b58\u51fb\u7a7f\uff09\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u4e92\u65a5\u9501\u3001\u70ed\u70b9 Key \u672c\u5730\u7f13\u5b58\u4e0e\u9884\u70ed\uff08warm-up\uff09\u7b56\u7565\u7f13\u89e3\u3002<\/li>\n<li>\u4f7f\u7528 Origin Shield \u4e0e\u6d41\u91cf\u6e05\u6d17\u7ed3\u5408\uff0c\u9632\u6b62\u6e90\u7ad9\u88ab\u722c\u866b\u6216\u653b\u51fb\u96c6\u4e2d\u51fb\u57ae\u3002<\/li>\n<\/ul>\n<h3>API \u4e0e\u52a8\u6001\u5185\u5bb9\u52a0\u901f<\/h3>\n<ul>\n<li>\u5bf9 API \u8bf7\u6c42\u53ef\u91c7\u7528\u8fb9\u7f18\u8ba1\u7b97\u5b9e\u73b0\u9274\u6743\u3001\u901f\u7387\u9650\u5236\u4e0e\u90e8\u5206\u54cd\u5e94\u751f\u6210\uff0c\u53ea\u6709\u5fc5\u8981\u65f6\u624d\u56de\u6e90\u3002<\/li>\n<li>\u5229\u7528\u667a\u80fd\u8def\u7531\u6309\u5730\u57df\u3001\u5ef6\u8fdf\u4e0e\u6210\u672c\u505a\u6d41\u91cf\u5206\u914d\uff0c\u4f8b\u5982\u5bf9\u4e2d\u56fd\u8bbf\u95ee\u8d70\u9999\u6e2f\u670d\u52a1\u5668\u8282\u70b9\uff0c\u5bf9\u65e5\u97e9\u7528\u6237\u8d70\u65e5\u672c\u670d\u52a1\u5668\/\u97e9\u56fd\u670d\u52a1\u5668\u8282\u70b9\u3002<\/li>\n<\/ul>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u4f20\u7edf CDN\u3001\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u667a\u80fd\u8c03\u5ea6<\/h2>\n<p>\u5728\u9ad8\u5e76\u53d1\u65f6\u4ee3\uff0c\u5355\u7eaf\u4f9d\u9760\u4f20\u7edf CDN \u5df2\u65e0\u6cd5\u6ee1\u8db3\u590d\u6742\u573a\u666f\uff0c\u9700\u7ed3\u5408\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u667a\u80fd\u8c03\u5ea6\u6765\u5f62\u6210\u95ed\u73af\u3002\u6bd4\u8f83\u8981\u70b9\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf<\/strong>\uff1a\u4f20\u7edf CDN \u63d0\u4f9b\u9759\u6001\u6587\u4ef6\u7684\u6781\u4f4e\u5ef6\u8fdf\uff1b\u52a0\u5165\u8fb9\u7f18\u8ba1\u7b97\u540e\uff0c\u52a8\u6001\u5904\u7406\u4e5f\u53ef\u5728\u6beb\u79d2\u7ea7\u5b8c\u6210\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e RTT\u3002<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027<\/strong>\uff1aAnycast 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\u7b56\u7565\u4e0e\u901f\u7387\u9650\u5236\uff0c\u51cf\u5c11\u6e90\u7ad9\u66b4\u9732\u9762\u3002<\/li>\n<\/ul>\n<h2>\u667a\u80fd\u8c03\u5ea6\uff1a\u5b9e\u73b0\u7ec6\u8282\u4e0e\u7b97\u6cd5\u5b9e\u8df5<\/h2>\n<p>\u667a\u80fd\u8c03\u5ea6\u662f\u5e94\u5bf9\u5730\u57df\u5dee\u5f02\u3001\u94fe\u8def\u6ce2\u52a8\u4e0e\u6210\u672c\u63a7\u5236\u7684\u5173\u952e\u3002\u5e38\u89c1\u6280\u672f\u5b9e\u73b0\u5305\u62ec\uff1a<\/p>\n<h3>\u52a8\u6001\u6d41\u91cf\u8def\u7531\u7b56\u7565<\/h3>\n<ul>\n<li>\u57fa\u4e8e\u5b9e\u65f6\u63a2\u6d4b\u7684\u5065\u5eb7\u68c0\u67e5\uff08\u4e3b\u52a8\/\u88ab\u52a8\uff09\uff0c\u901a\u8fc7 BGP \u8def\u7531\u4e0e DNS \u8d1f\u8f7d\u5747\u8861\u5b9e\u73b0\u6d41\u91cf\u5207\u6362\u3002<\/li>\n<li>\u5229\u7528\u6027\u80fd\u6570\u636e\uff08\u5ef6\u8fdf\u3001\u4e22\u5305\u7387\u3001\u5e26\u5bbd\u5229\u7528\u7387\uff09\u505a\u591a\u7ef4\u5ea6\u8bc4\u4f30\uff0c\u7ed3\u5408\u673a\u5668\u5b66\u4e60\u6a21\u578b\u9884\u6d4b\u94fe\u8def\u8d28\u91cf\u5e76\u63d0\u524d\u8c03\u6574\u6d41\u91cf\u3002<\/li>\n<\/ul>\n<h3>\u9884\u6d4b\u6027\u9884\u70ed\u4e0e\u7f13\u5b58\u9884\u7f6e<\/h3>\n<ul>\n<li>\u901a\u8fc7\u65e5\u5fd7\u4e0e\u884c\u4e3a\u5206\u6790\u9884\u6d4b\u70ed\u5ea6\uff0c\u63d0\u524d\u5728\u8fb9\u7f18\u8282\u70b9\u9884\u7f6e\u5173\u952e\u8d44\u6e90\uff0c\u51cf\u5c11\u6d3b\u52a8\u5f00\u59cb\u65f6\u7684\u51b7\u542f\u52a8\u3002<\/li>\n<li>\u5bf9\u77ed\u671f\u7a81\u53d1\u70ed\u70b9\uff0c\u7ed3\u5408 ML \u6a21\u578b\u505a\u70ed\u95e8 URL \u9884\u6d4b\u5e76\u81ea\u52a8\u4e0b\u53d1\u5230\u76f8\u5173 PoP\u3002<\/li>\n<\/ul>\n<h3>\u56de\u6e90\u4e0e\u5bb9\u9519\u7b56\u7565<\/h3>\n<ul>\n<li>\u8bbe\u7f6e\u591a\u6e90\u5907\u4efd\uff08\u591a\u4e2a\u6570\u636e\u4e2d\u5fc3\u6216\u4e0d\u540c\u4e91\u63d0\u4f9b\u5546\uff09\u53ca\u5206\u6d41\u7b56\u7565\uff0c\u51fa\u73b0\u6545\u969c\u65f6\u5feb\u901f\u5207\u6362\uff0c\u7ed3\u5408\u8bc4\u4f30\u6210\u672c\u4e0e\u5408\u89c4\u6027\u9009\u62e9\u4f18\u5148\u8def\u5f84\uff08\u4f8b\u5982\u9999\u6e2f\u670d\u52a1\u5668\u4f5c\u4e3a\u4e9a\u592a\u56de\u6e90\u8282\u70b9\uff09\u3002<\/li>\n<li>\u90e8\u7f72\u901f\u7387\u9650\u5236\u4e0e\u961f\u5217\u673a\u5236\uff0c\u907f\u514d\u6e90\u7ad9\u56e0\u5e76\u53d1\u4e0a\u5347\u800c\u5d29\u6e83\u3002<\/li>\n<\/ul>\n<h2>\u9009\u8d2d\u5efa\u8bae\uff1a\u5982\u4f55\u4e3a\u4e0d\u540c\u9700\u6c42\u9009\u578b<\/h2>\n<p>\u5728\u9009\u62e9 CDN \u6216\u76f8\u5173\u7f51\u7edc\u670d\u52a1\u65f6\uff0c\u5e94\u4ece\u4ee5\u4e0b\u7ef4\u5ea6\u8bc4\u4f30\uff1a<\/p>\n<h3>\u8986\u76d6\u4e0e\u5ef6\u8fdf<\/h3>\n<ul>\n<li>\u786e\u8ba4 PoP 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