{"id":210307,"date":"2025-10-24T11:03:04","date_gmt":"2025-10-24T03:03:04","guid":{"rendered":"https:\/\/www.server.hk\/blog\/210307\/"},"modified":"2025-10-24T11:03:05","modified_gmt":"2025-10-24T03:03:05","slug":"cdn-356","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/210307\/","title":{"rendered":"CDN\u591a\u534f\u8bae\u667a\u80fd\u8c03\u5ea6\uff1a\u5b9e\u73b0\u9ad8\u6548\u7a33\u5b9a\u7684\u5185\u5bb9\u5206\u53d1"},"content":{"rendered":"<p>\u968f\u7740\u4e92\u8054\u7f51\u5e94\u7528\u591a\u6837\u5316\u548c\u7528\u6237\u4f53\u9a8c\u8981\u6c42\u7684\u63d0\u5347\uff0c\u4f20\u7edf\u5355\u4e00\u534f\u8bae\u7684\u5185\u5bb9\u5206\u53d1\u6a21\u5f0f\u8d8a\u6765\u8d8a\u96be\u4ee5\u6ee1\u8db3\u9ad8\u5e76\u53d1\u3001\u4f4e\u65f6\u5ef6\u3001\u8de8\u5730\u57df\u7a33\u5b9a\u8bbf\u95ee\u7684\u9700\u6c42\u3002<strong>CDN 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PoP\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\uff1a\u54ea\u4e9b\u4e1a\u52a1\u6700\u53d7\u76ca<\/h2>\n<h3>\u9759\u6001\u7f51\u7ad9\u4e0e\u4e2d\u5c0f\u7ad9\u70b9<\/h3>\n<p>\u5bf9\u5e38\u89c4\u9759\u6001\u8d44\u6e90\uff08HTML\u3001CSS\u3001JS\u3001\u56fe\u7247\uff09\u800c\u8a00\uff0c<strong>\u7f13\u5b58\u547d\u4e2d\u7387\u548c\u4f4e\u9996\u5305\u65f6\u5ef6<\/strong>\u662f\u5173\u952e\u3002\u591a\u534f\u8bae\u8c03\u5ea6\u53ef\u4f18\u5148\u4e3a\u9996\u6b21\u8fde\u63a5\u4f7f\u7528 HTTP\/1.1 \u7684\u517c\u5bb9\u6027\uff0c\u540c\u65f6\u4e3a\u652f\u6301\u8005\u542f\u7528 HTTP\/2 \u6216 HTTP\/3 \u4ee5\u51cf\u5c11\u591a\u5e76\u53d1\u8bf7\u6c42\u7684\u5934\u90e8\u5f00\u9500\u4e0e\u63e1\u624b\u65f6\u5ef6\u3002<\/p>\n<h3>\u97f3\u89c6\u9891\u5b9e\u65f6\u6d41\u4e0e\u70b9\u64ad\uff08VoD\uff09<\/h3>\n<p>\u89c6\u9891\u573a\u666f\u5bf9\u541e\u5410\u91cf\u4e0e\u6297\u4e22\u5305\u80fd\u529b\u8981\u6c42\u9ad8\u3002QUIC \u7684\u5185\u5efa FEC\uff08\u524d\u5411\u7ea0\u9519\uff09\u4e0e\u66f4\u5feb\u7684\u91cd\u4f20\u673a\u5236\u5728\u4e0d\u7a33\u5b9a\u7f51\u7edc\uff08\u5982\u79fb\u52a8\u7f51\u7edc\uff09\u4e2d\u8868\u73b0\u826f\u597d\u3002\u667a\u80fd\u8c03\u5ea6\u53ef\u5728\u68c0\u6d4b\u5230\u9ad8\u4e22\u5305\u65f6\u81ea\u52a8\u8f6c\u4e3a QUIC \u6216\u5728\u5e26\u5bbd\u53d7\u9650\u65f6\u542f\u7528\u81ea\u9002\u5e94\u7801\u7387\uff08ABR\uff09\u7b56\u7565\u3002<\/p>\n<h3>API \u4e0e\u79fb\u52a8\u5e94\u7528<\/h3>\n<p>API \u8bf7\u6c42\u901a\u5e38\u4e3a\u77ed\u8fde\u63a5\u3001\u654f\u611f\u4e8e\u5ef6\u8fdf\u4e0e\u7a33\u5b9a\u6027\u3002\u591a\u534f\u8bae\u7b56\u7565\u53ef\u4ee5\u7ed3\u5408 TLS \u4f1a\u8bdd\u6062\u590d\u30010-RTT\uff08\u5728\u5b89\u5168\u5141\u8bb8\u4e0b\uff09\u4ee5\u51cf\u5c11\u9996\u6b21\u8bf7\u6c42\u5ef6\u65f6\uff0c\u5e76\u5bf9\u4e0d\u540c\u533a\u57df\u7684\u79fb\u52a8\u7528\u6237\u9009\u62e9\u66f4\u5408\u9002\u7684\u4f20\u8f93\uff08\u4f8b\u5982\u5728\u4e9a\u6d32\u90e8\u5206\u7f51\u7edc\u5207\u6362\u5230 UDP+\u4f18\u5316\u7684 QUIC \u8def\u5f84\uff09\u3002<\/p>\n<h3>\u5927\u6587\u4ef6\u5206\u53d1\u4e0e\u8f6f\u4ef6\u66f4\u65b0<\/h3>\n<p>\u5206\u53d1\u5927\u578b\u4e8c\u8fdb\u5236\u6587\u4ef6\u5bf9\u541e\u5410\u4e0e\u65ad\u70b9\u7eed\u4f20\u652f\u6301\u8981\u6c42\u9ad8\u3002\u667a\u80fd\u8c03\u5ea6\u7ed3\u5408 Range \u8bf7\u6c42\u3001\u65ad\u70b9\u7eed\u4f20\u4e0e\u591a\u8fde\u63a5\u5e76\u884c\uff08\u6216 HTTP\/3 \u591a\u8def\u590d\u7528\uff09\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u4e0b\u8f7d\u901f\u5ea6\u5e76\u63d0\u5347\u91cd\u8bd5\u6548\u7387\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1a\u591a\u534f\u8bae\u667a\u80fd\u8c03\u5ea6 vs \u4f20\u7edf\u5355\u4e00\u534f\u8baeCDN<\/h2>\n<h3>\u6027\u80fd\u4e0e\u53ef\u7528\u6027<\/h3>\n<p><strong>\u66f4\u4f4e\u7684\u9996\u5b57\u8282\u65f6\u5ef6\uff08TTFB\uff09\u548c\u66f4\u9ad8\u7684\u541e\u5410<\/strong>\uff1a\u5728\u4f4e\u5ef6\u8fdf\u7f51\u7edc\u4e2d\uff0cHTTP\/2 \u7684\u591a\u8def\u590d\u7528\u51cf\u5c11 TCP 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