{"id":209647,"date":"2025-10-23T19:50:59","date_gmt":"2025-10-23T11:50:59","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209647\/"},"modified":"2025-10-23T19:51:00","modified_gmt":"2025-10-23T11:51:00","slug":"%e7%94%a8cdn%e6%98%be%e8%91%97%e9%99%8d%e4%bd%8e%e5%9c%a8%e7%ba%bf%e6%b8%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209647\/","title":{"rendered":"\u7528CDN\u663e\u8457\u964d\u4f4e\u5728\u7ebf\u6e38\u620f\u5ef6\u8fdf\uff1a\u5173\u952e\u4f18\u5316\u7b56\u7565"},"content":{"rendered":"<p>\u5728\u5168\u7403\u5316\u7684\u5728\u7ebf\u6e38\u620f\u751f\u6001\u4e2d\uff0c<strong>\u5ef6\u8fdf\uff08Latency\uff09<\/strong>\u5f80\u5f80\u662f\u5f71\u54cd\u73a9\u5bb6\u4f53\u9a8c\u7684\u51b3\u5b9a\u6027\u56e0\u7d20\u3002\u5229\u7528\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4e0d\u4ec5\u80fd\u4f18\u5316\u9759\u6001\u8d44\u6e90\u7684\u52a0\u8f7d\u901f\u5ea6\uff0c\u66f4\u53ef\u4ee5\u901a\u8fc7\u8fb9\u7f18\u8ba1\u7b97\u3001\u8def\u7531\u4f18\u5316\u548c\u534f\u8bae\u5347\u7ea7\u663e\u8457\u964d\u4f4e\u5728\u7ebf\u6e38\u620f\u7684\u7aef\u5230\u7aef\u5ef6\u8fdf\u3002\u672c\u6587\u5c06\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u4ece\u539f\u7406\u5230\u5b9e\u8df5\u3001\u5e94\u7528\u573a\u666f\u548c\u9009\u8d2d\u5efa\u8bae\u5c55\u5f00\u8be6\u5c3d\u9610\u8ff0\uff0c\u5e2e\u52a9\u4f60\u57fa\u4e8e\u9999\u6e2f\u670d\u52a1\u5668\u6216\u6d77\u5916\u8282\u70b9\u6784\u5efa\u4f4e\u5ef6\u8fdf\u7684\u6e38\u620f\u5206\u53d1\u4f53\u7cfb\u3002<\/p>\n<h2>CDN 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\u7684\u9884\u70ed\uff08prefetch\uff09\u673a\u5236\u63d0\u524d\u4e0b\u53d1\u70ed\u95e8\u8865\u4e01\u3002<\/li>\n<li>\u91c7\u7528\u5408\u7406\u7684 Cache-Control \u7b56\u7565\u4e0e ETag\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u91cd\u590d\u4e0b\u8f7d\u3002<\/li>\n<\/ul>\n<h3>2. \u5b9e\u65f6\u591a\u4eba\u5bf9\u6218<\/h3>\n<p>\u5b9e\u65f6\u5bf9\u6218\u5bf9\u5ef6\u8fdf\u4e0e\u6296\u52a8\u654f\u611f\u3002\u5177\u4f53\u4f18\u5316\u624b\u6bb5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u9009\u62e9\u6700\u8fd1\u7684\u8fb9\u7f18\u8282\u70b9\u8fdb\u884c UDP \u7a7f\u900f\uff0c\u4f7f\u7528\u66f4\u77ed\u7684 RTT 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DNS\uff0c\u53ef\u4ee5\u57fa\u4e8e\u73a9\u5bb6\u7684\u5730\u7406\u4f4d\u7f6e\u4e0e\u7f51\u7edc\u8d28\u91cf\u5c06\u8bf7\u6c42\u5bfc\u5411\u6700\u4f73 POP\u3002\u6bd4\u5982\uff1a\u4e9a\u592a\u73a9\u5bb6\u4f18\u5148\u547d\u4e2d\u9999\u6e2f\u6216\u65b0\u52a0\u5761\u8282\u70b9\uff0c\u7f8e\u6d32\u73a9\u5bb6\u8d70\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1aCDN+\u8fb9\u7f18 vs \u4f20\u7edf\u4e2d\u5fc3\u5316\u67b6\u6784<\/h2>\n<ul>\n<li><strong>\u5ef6\u8fdf\u4e0e\u6296\u52a8\uff1a<\/strong>\u8fb9\u7f18\u5316\u663e\u8457\u964d\u4f4e\u5e73\u5747 RTT\uff0c\u6296\u52a8\u4e5f\u66f4\u53ef\u63a7\uff1b\u4e2d\u5fc3\u5316\u67b6\u6784\u5728\u8de8\u6d0b\u8bbf\u95ee\u65f6\u5bb9\u6613\u51fa\u73b0 RTT \u6fc0\u589e\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u6210\u672c\uff1a<\/strong>\u901a\u8fc7\u8fb9\u7f18\u7f13\u5b58\u51cf\u5c11\u56de\u6e90\u6d41\u91cf\uff0c\u964d\u4f4e\u9aa8\u5e72\u94fe\u8def\u548c\u6258\u7ba1\u670d\u52a1\u5668\u7684\u51fa\u7ad9\u5e26\u5bbd\u8d39\u7528\u3002<\/li>\n<li><strong>\u53ef\u7528\u6027\u4e0e\u5bb9\u9519\uff1a<\/strong>\u591a\u70b9\u90e8\u7f72\u4e0e Anycast \u80fd\u5728\u8282\u70b9\u6545\u969c\u65f6\u5feb\u901f\u5207\u6362\uff0c\u63d0\u5347\u6297 DDoS \u4e0e\u7a81\u53d1\u6d41\u91cf\u7684\u80fd\u529b\u3002<\/li>\n<li><strong>\u5f00\u53d1\u590d\u6742\u5ea6\uff1a<\/strong>\u8fb9\u7f18\u8ba1\u7b97\u548c\u5b9e\u65f6\u534f\u8bae\u9700\u8981\u989d\u5916\u7684\u5de5\u7a0b\u6295\u5165\uff08\u5982\u72b6\u6001\u540c\u6b65\u3001\u7f13\u5b58\u5931\u6548\u7b56\u7565\u3001\u534f\u8bae\u9002\u914d\uff09\uff0c\u4f46\u957f\u671f\u80fd\u663e\u8457\u63d0\u5347\u73a9\u5bb6\u4f53\u9a8c\u3002<\/li>\n<\/ul>\n<h2>\u5173\u952e\u5b9e\u73b0\u7ec6\u8282\u4e0e\u4f18\u5316\u5efa\u8bae<\/h2>\n<h3>\u7f51\u7edc\u5c42\u4e0e\u4f20\u8f93\u5c42<\/h3>\n<ul>\n<li>\u542f\u7528 QUIC\/HTTP3 \u7528\u4e8e\u975e\u4e25\u683c\u5b9e\u65f6\u4f46\u9700\u8981\u4f4e\u5ef6\u8fdf\u7684\u63a7\u5236\u901a\u9053\uff0cQUIC \u51cf\u5c11\u4e86\u8fde\u63a5\u5efa\u7acb\u65f6\u95f4\u5e76\u5728\u4e22\u5305\u65f6\u6062\u590d\u66f4\u5feb\u3002<\/li>\n<li>\u5bf9\u5b9e\u65f6\u6d41\u91cf\u4f7f\u7528 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