{"id":209609,"date":"2025-10-23T19:05:47","date_gmt":"2025-10-23T11:05:47","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209609\/"},"modified":"2025-10-23T19:05:48","modified_gmt":"2025-10-23T11:05:48","slug":"cdn-60","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209609\/","title":{"rendered":"CDN\u52a0\u901f\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\uff1a\u6253\u9020\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u5e76\u53d1\u7684\u6d41\u7545\u8bfe\u5802\u4f53\u9a8c"},"content":{"rendered":"<p>\u5728\u5728\u7ebf\u6559\u80b2\u5feb\u901f\u53d1\u5c55\u7684\u4eca\u5929\uff0c\u8bfe\u5802\u7684\u6d41\u7545\u6027\u76f4\u63a5\u5f71\u54cd\u5b66\u4e60\u4f53\u9a8c\u4e0e\u6559\u5b66\u6548\u679c\u3002\u9488\u5bf9\u6d77\u91cf\u5e76\u53d1\u7684\u76f4\u64ad\u3001\u70b9\u64ad\u53ca\u4e92\u52a8\u6559\u5b66\u573a\u666f\uff0c\u4f20\u7edf\u5355\u70b9\u90e8\u7f72\u5df2\u96be\u4ee5\u6ee1\u8db3\u4f4e\u5ef6\u8fdf\u3001\u9ad8\u53ef\u7528\u6027\u7684\u9700\u6c42\u3002\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff08CDN\uff09\u4f5c\u4e3a\u5173\u952e\u57fa\u7840\u8bbe\u65bd\uff0c\u53ef\u5c06\u6559\u5b66\u5185\u5bb9\u5206\u53d1\u5230\u79bb\u7528\u6237\u66f4\u8fd1\u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u663e\u8457\u964d\u4f4e\u5ef6\u8fdf\u5e76\u63d0\u5347\u5e76\u53d1\u627f\u8f7d\u80fd\u529b\u3002\u672c\u6587\u5c06\u4ece\u539f\u7406\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u4e0e\u5176\u4ed6\u65b9\u6848\u7684\u4f18\u52bf\u5bf9\u6bd4\u4ee5\u53ca\u9009\u8d2d\u4e0e\u90e8\u7f72\u5efa\u8bae\u7b49\u89d2\u5ea6\uff0c\u8be6\u5c3d\u5206\u6790\u5982\u4f55\u901a\u8fc7CDN\u52a0\u901f\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\uff0c\u5e2e\u52a9\u7ad9\u957f\u3001\u4f01\u4e1a\u548c\u5f00\u53d1\u8005\u6784\u5efa\u7a33\u5b9a\u6d41\u7545\u7684\u8bfe\u5802\u4f53\u9a8c\u3002<\/p>\n<h2>CDN\u52a0\u901f\u5728\u7ebf\u6559\u80b2\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>CDN \u7684\u6838\u5fc3\u662f\u5c06\u539f\u59cb\u5185\u5bb9\uff08origin\uff09\u7f13\u5b58\u5230\u904d\u5e03\u5168\u7403\u7684\u8fb9\u7f18\u8282\u70b9\uff08edge nodes\uff09\uff0c\u5e76\u901a\u8fc7\u667a\u80fd\u8def\u7531\u5c06\u7528\u6237\u8bf7\u6c42\u5f15\u5bfc\u5230\u6700\u8fd1\u6216\u6700\u4f18\u7684\u8282\u70b9\u3002\u5bf9\u4e8e\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\uff0c\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u6280\u672f\u70b9\uff1a<\/p>\n<h3>\u7f13\u5b58\u7b56\u7565\u4e0e\u8fb9\u7f18\u7f13\u5b58<\/h3>\n<ul>\n<li><strong>\u9759\u6001\u5185\u5bb9\u7f13\u5b58<\/strong>\uff1a\u8bfe\u4ef6\u3001\u56fe\u7247\u3001PPT\u3001\u89c6\u9891\u5206\u7247\u7b49\u9759\u6001\u8d44\u6e90\u53ef\u8bbe\u7f6e\u8f83\u957f\u7684 Cache-Control\uff1b\u901a\u8fc7\u5408\u7406\u7684 TTL\uff08Time To Live\uff09\u53ef\u4ee5\u964d\u4f4e\u56de\u6e90\u538b\u529b\u4e0e\u5e26\u5bbd\u6210\u672c\u3002<\/li>\n<li><strong>\u52a8\u6001\u5185\u5bb9\u52a0\u901f<\/strong>\uff1a\u5bf9\u4e8e\u9700\u8981\u5b9e\u65f6\u4ea4\u4e92\u7684\u6570\u636e\uff08\u4f8b\u5982\u5728\u7ebf\u7b54\u9898\u3001\u8bfe\u5802\u767d\u677f\u7684\u534f\u540c\u6570\u636e\uff09\uff0c\u5e38\u7528 <em>\u52a8\u6001\u5185\u5bb9\u8def\u7531<\/em>\u3001\u957f\u8fde\u63a5\u548c\u534f\u8bae\u4f18\u5316\uff08\u5982 HTTP\/2\u3001QUIC\uff09\u6765\u51cf\u5c11\u5f80\u8fd4\u5ef6\u8fdf\u3002<\/li>\n<li><strong>\u7f13\u5b58\u5237\u65b0\u4e0e\u4e00\u81f4\u6027<\/strong>\uff1a\u6559\u5b66\u5185\u5bb9\u9891\u7e41\u66f4\u65b0\u65f6\uff0c\u9700\u652f\u6301\u5373\u65f6\u6216\u9010\u6b65\u5237\u65b0\uff08purge\u3001stale-while-revalidate\uff09\uff0c\u4fdd\u8bc1\u5b66\u751f\u80fd\u5feb\u901f\u770b\u5230\u6700\u65b0\u8bfe\u4ef6\u800c\u4e0d\u5f71\u54cd\u7f13\u5b58\u547d\u4e2d\u3002<\/li>\n<\/ul>\n<h3>\u4f20\u8f93\u5c42\u4e0e\u534f\u8bae\u4f18\u5316<\/h3>\n<ul>\n<li><strong>HTTP\/2 \u548c HTTP\/3\uff08QUIC\uff09\u652f\u6301<\/strong>\uff1a\u5e76\u884c\u591a\u8def\u590d\u7528\u3001\u5934\u90e8\u538b\u7f29\u548c0-RTT\u7b49\u7279\u6027\uff0c\u80fd\u663e\u8457\u964d\u4f4e\u5c0f\u6587\u4ef6\u548c\u591a\u8d44\u6e90\u52a0\u8f7d\u7684\u5ef6\u8fdf\u3002<\/li>\n<li><strong>TLS \u52a0\u901f\u4e0e\u4f1a\u8bdd\u590d\u7528<\/strong>\uff1a\u8fb9\u7f18\u8282\u70b9\u7ec8\u6b62 TLS\uff0c\u51cf\u5c11\u8bc1\u4e66\u63e1\u624b\u5e26\u6765\u7684\u5ef6\u8fdf\uff0c\u540c\u65f6\u901a\u8fc7\u4f1a\u8bdd\u7968\u636e\/0-RTT\u51cf\u5c11\u91cd\u590d\u63e1\u624b\u6210\u672c\u3002<\/li>\n<li><strong>\u957f\u8fde\u63a5\u4e0e\u8fb9\u7f18\u957f\u9a7b<\/strong>\uff1a\u7528\u4e8e WebSocket \u6216 WebRTC \u7684\u957f\u8fde\u63a5\u4f18\u5316\uff0c\u51cf\u5c11\u91cd\u8fde\u548c\u5efa\u7acb\u65b0 TCP \u63e1\u624b\u7684\u6210\u672c\uff0c\u4fdd\u969c\u8bfe\u5802\u4e2d\u7684\u5b9e\u65f6\u97f3\u89c6\u9891\u901a\u8bdd\u8d28\u91cf\u3002<\/li>\n<\/ul>\n<h3>\u5b9e\u65f6\u97f3\u89c6\u9891\u4e0e\u81ea\u9002\u5e94\u7801\u7387<\/h3>\n<ul>\n<li><strong>\u5206\u6bb5\u4f20\u8f93\u4e0e HLS\/DASH \u652f\u6301<\/strong>\uff1a\u5c06\u89c6\u9891\u5207\u7247\u653e\u5728 CDN \u4e0a\uff0c\u7ed3\u5408\u81ea\u9002\u5e94\u7801\u7387\uff08ABR\uff09\u7b97\u6cd5\uff0c\u6839\u636e\u5b66\u751f\u7f51\u7edc\u72b6\u51b5\u81ea\u52a8\u9009\u62e9\u5408\u9002\u7684\u7f16\u7801\uff0c\u51cf\u5c11\u7f13\u51b2\u548c\u5361\u987f\u3002<\/li>\n<li><strong>\u4f4e\u5ef6\u8fdf\u534f\u8bae<\/strong>\uff1a\u5bf9\u4e8e\u4e92\u52a8\u76f4\u64ad\uff0c\u4f7f\u7528 WebRTC \u6216\u57fa\u4e8e QUIC \u7684\u4f4e\u5ef6\u8fdf\u6d41\u5a92\u4f53\u53ef\u4ee5\u5c06\u7aef\u5230\u7aef\u5ef6\u8fdf\u964d\u5230\u6570\u767e\u6beb\u79d2\u7ea7\u522b\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u8f6c\u7801\u4e0e\u534f\u8bae\u6865\u63a5<\/strong>\uff1a\u90e8\u5206 CDN \u652f\u6301\u8fb9\u7f18\u4fa7\u8f6c\u7801\u6216\u534f\u8bae\u6865\u63a5\uff08\u4f8b\u5982 RTMP -&gt; HLS\/QUIC\uff09\uff0c\u964d\u4f4e\u6e90\u7ad9\u8d1f\u8f7d\u5e76\u63d0\u9ad8\u517c\u5bb9\u6027\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u5b9e\u8df5\u8981\u70b9<\/h2>\n<p>\u4e0d\u540c\u6559\u5b66\u6a21\u5f0f\u5bf9 CDN \u7684\u9700\u6c42\u5404\u6709\u4fa7\u91cd\uff1a<\/p>\n<h3>\u5927\u73ed\u76f4\u64ad\uff08\u9ad8\u5e76\u53d1\uff09<\/h3>\n<ul>\n<li>\u5173\u952e\u95ee\u9898\uff1a\u5e76\u53d1\u8fde\u63a5\u6570\u6fc0\u589e\u3001\u6e90\u7ad9\u5e26\u5bbd\u74f6\u9888\u3001\u8de8\u533a\u57df\u5ef6\u8fdf\u3002<\/li>\n<li>\u5b9e\u8df5\u8981\u70b9\uff1a\u91c7\u7528\u5206\u5c42\u7f13\u5b58\uff08\u5168\u7403\u9aa8\u5e72 + \u533a\u57df\u8fb9\u7f18\uff09\u3001Anycast DNS \u914d\u5408\u667a\u80fd\u8c03\u5ea6\uff0c\u5b9e\u73b0\u63a5\u5165\u8282\u70b9\u7684\u8d1f\u8f7d\u5747\u8861\uff1b\u5e76\u901a\u8fc7\u8282\u6d41\u4e0e\u5206\u7ea7\u5e26\u5bbd\u7ba1\u7406\u4fdd\u8bc1\u6d41\u7545\u6027\u3002<\/li>\n<\/ul>\n<h3>\u5c0f\u73ed\u4e92\u52a8\u4e0e\u767d\u677f\u534f\u4f5c\uff08\u4f4e\u5ef6\u8fdf\uff09<\/h3>\n<ul>\n<li>\u5173\u952e\u95ee\u9898\uff1a\u5b9e\u65f6\u6027\u8981\u6c42\u9ad8\uff0c\u4ea4\u4e92\u6570\u636e\u5bf9\u5ef6\u8fdf\u654f\u611f\u3002<\/li>\n<li>\u5b9e\u8df5\u8981\u70b9\uff1a\u4f18\u5148\u9009\u62e9\u652f\u6301 WebRTC \u6216 QUIC \u7684\u8fb9\u7f18\u8282\u70b9\uff0c\u4f7f\u7528\u5c40\u90e8\u56de\u6e90\u4e0e\u65c1\u8def\u901a\u9053\u51cf\u5c11\u4e2d\u8f6c\uff1b\u5bf9\u4ea4\u4e92\u6d88\u606f\u91c7\u7528 UDP \u4f18\u5148\u7684\u4f20\u8f93\u7b56\u7565\u548c\u672c\u5730\u53ef\u9760\u4f20\u8f93\u673a\u5236\u3002<\/li>\n<\/ul>\n<h3>\u8bfe\u4ef6\u4e0b\u8f7d\u4e0e\u70b9\u64ad\uff08\u5e26\u5bbd\u4f18\u5316\uff09<\/h3>\n<ul>\n<li>\u5173\u952e\u95ee\u9898\uff1a\u5927\u6587\u4ef6\uff08\u89c6\u9891\u3001\u8bfe\u4ef6\uff09\u4f20\u8f93\u9891\u7e41\uff0c\u6210\u672c\u9ad8\u3002<\/li>\n<li>\u5b9e\u8df5\u8981\u70b9\uff1a\u5bf9\u70ed\u95e8\u8bfe\u7a0b\u542f\u7528\u957f TTL \u7f13\u5b58\u3001\u5206\u5c42\u7f13\u5b58\u548c\u5206\u7247\u5206\u53d1\uff0c\u7ed3\u5408\u65ad\u70b9\u7eed\u4f20\u4e0e\u591a\u6e90\u52a0\u901f\uff0c\u63d0\u9ad8\u541e\u5410\u5e76\u964d\u4f4e\u5e26\u5bbd\u8d39\u7528\u3002<\/li>\n<\/ul>\n<h2>\u4e0e\u5176\u4ed6\u65b9\u6848\u7684\u4f18\u52bf\u5bf9\u6bd4<\/h2>\n<p>\u5c06 CDN \u4e0e\u4f20\u7edf\u81ea\u5efa\u52a0\u901f\u6216\u4e91\u5382\u5546\u76f4\u8fde\u65b9\u6848\u6bd4\u8f83\uff0c\u53ef\u4ece\u5ef6\u8fdf\u3001\u5e76\u53d1\u3001\u6210\u672c\u4e0e\u53ef\u63a7\u6027\u56db\u65b9\u9762\u8bc4\u4f30\uff1a<\/p>\n<ul>\n<li><strong>\u5ef6\u8fdf<\/strong>\uff1aCDN \u901a\u8fc7\u8282\u70b9\u5206\u5e03\u5c06\u70ed\u70b9\u5185\u5bb9\u4e0b\u6c89\u5230\u7528\u6237\u9644\u8fd1\uff0c\u901a\u5e38\u80fd\u628a\u8de8\u5883\u8bbf\u95ee\u5ef6\u8fdf\u5927\u5e45\u964d\u4f4e\uff0c\u5c24\u5176\u662f\u9762\u5411\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7b49\u4e9a\u6d32\u70ed\u70b9\u5730\u533a\u65f6\u6548\u679c\u660e\u663e\u3002<\/li>\n<li><strong>\u5e76\u53d1\u5904\u7406\u80fd\u529b<\/strong>\uff1aCDN \u7684\u6d77\u91cf\u8fb9\u7f18\u8282\u70b9\u548c Anycast \u9aa8\u5e72\u80fd\u591f\u5e73\u6ed1\u5e94\u5bf9\u7a81\u53d1\u6d41\u91cf\uff0c\u907f\u514d\u6e90\u7ad9\u6210\u4e3a\u74f6\u9888\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u4e0e\u6210\u672c<\/strong>\uff1a\u901a\u8fc7\u7f13\u5b58\u547d\u4e2d\u7387\u63d0\u9ad8\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u6e90\u7ad9\u6d41\u91cf\uff0c\u51cf\u5c11\u6d77\u5916\u51fa\u5e26\u5bbd\u652f\u51fa\u3002\u5bf9\u4e8e\u957f\u671f\u7a33\u5b9a\u8bbf\u95ee\u91cf\u5927\u7684\u8bfe\u7a0b\uff0cCDN \u7684\u8fb9\u7f18\u7f13\u5b58\u80fd\u591f\u5e26\u6765\u53ef\u89c2\u6210\u672c\u8282\u7ea6\u3002<\/li>\n<li><strong>\u53ef\u63a7\u6027\u4e0e\u5408\u89c4<\/strong>\uff1a\u81ea\u5efa\u52a0\u901f\u53ef\u83b7\u5f97\u66f4\u9ad8\u53ef\u63a7\u6027\uff0c\u4f46\u6295\u5165\u5927\uff1b\u9009\u62e9\u5408\u9002\u7684 CDN \u670d\u52a1\u5546\u53ef\u4ee5\u5728\u5408\u89c4\uff08\u4f8b\u5982\u6570\u636e\u9a7b\u7559\uff09\u4e0e\u6027\u80fd\u4e4b\u95f4\u627e\u5230\u5e73\u8861\uff0c\u5c24\u5176\u662f\u5728\u9999\u6e2f\u6216\u65e5\u672c\u90e8\u7f72\u65f6\u66f4\u5229\u4e8e\u6ee1\u8db3\u5730\u533a\u76d1\u7ba1\u3002<\/li>\n<\/ul>\n<h2>\u6280\u672f\u5b9e\u65bd\u4e0e\u9009\u8d2d\u5efa\u8bae<\/h2>\n<p>\u5728\u9009\u62e9\u4e0e\u90e8\u7f72 CDN \u4e3a\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\u52a0\u901f\u65f6\uff0c\u5efa\u8bae\u4ece\u4ee5\u4e0b\u7ef4\u5ea6\u8fdb\u884c\u8bc4\u4f30\u4e0e\u8bbe\u8ba1\uff1a<\/p>\n<h3>\u8282\u70b9\u8986\u76d6\u4e0e\u9aa8\u5e72\u7f51\u7edc<\/h3>\n<ul>\n<li>\u4f18\u5148\u9009\u62e9\u5728\u76ee\u6807\u7528\u6237\u96c6\u4e2d\u5730\u533a\u62e5\u6709\u4e30\u5bcc PoP \u7684 CDN\uff0c\u82e5\u7528\u6237\u4e3b\u8981\u5728\u4e2d\u56fd\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u6216\u5317\u7f8e\uff0c\u5219\u8282\u70b9\u5206\u5e03\u5e94\u6db5\u76d6\u8fd9\u4e9b\u5730\u533a\uff0c\u51cf\u5c11\u8de8\u5883\u4e2d\u8f6c\u3002<\/li>\n<li>\u8bc4\u4f30 CDN \u7684\u9aa8\u5e72\u7f51\u7edc\u662f\u5426\u91c7\u7528 Anycast \u4e0e\u591a\u94fe\u8def\u76f4\u8fde\uff0c\u4ee5\u4fdd\u8bc1\u5728\u94fe\u8def\u6296\u52a8\u6216\u8282\u70b9\u62e5\u5835\u65f6\u7684\u5feb\u901f\u5207\u6362\u3002<\/li>\n<\/ul>\n<h3>\u534f\u8bae\u4e0e\u529f\u80fd\u652f\u6301<\/h3>\n<ul>\n<li>\u786e\u8ba4\u670d\u52a1\u652f\u6301 HTTP\/2\u3001HTTP\/3\uff08QUIC\uff09\u3001WebSocket\u3001WebRTC \u7b49\u534f\u8bae\uff0c\u4ee5\u53ca\u5f39\u6027\u7684\u8bc1\u4e66\u7ba1\u7406\uff08Let&#8217;s Encrypt\/\u81ea\u5e26\u8bc1\u4e66\uff09\u3002<\/li>\n<li>\u662f\u5426\u652f\u6301\u5b9e\u65f6\u65e5\u5fd7\u3001\u56de\u6e90\u5e26\u5bbd\u63a7\u5236\u3001\u5206\u7ea7\u7f13\u5b58\u89c4\u5219\u3001\u6309\u9700\u8f6c\u7801\u4e0e\u8fb9\u7f18\u51fd\u6570\uff08Edge Compute\uff09\u7b49\u6269\u5c55\u80fd\u529b\u3002<\/li>\n<\/ul>\n<h3>\u4e0e\u6e90\u7ad9\u7684\u534f\u540c\u8bbe\u8ba1<\/h3>\n<ul>\n<li>\u6e90\u7ad9\uff08\u53ef\u4e3a\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u6d77\u5916\u670d\u52a1\u5668\uff09\u5e94\u5408\u7406\u914d\u7f6e\u5e26\u5bbd\u4e0e\u8d1f\u8f7d\u5747\u8861\uff1b\u5728\u6d41\u5a92\u4f53\u573a\u666f\u4e0b\u5efa\u8bae\u90e8\u7f72\u591a\u6d3b\u56de\u6e90\u6216\u4f7f\u7528\u6570\u636e\u5e93\u8bfb\u5199\u5206\u79bb\u4ee5\u51cf\u8f7b\u5355\u70b9\u538b\u529b\u3002<\/li>\n<li>\u53ef\u7ed3\u5408\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS 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Cache-Control\uff0c\u70ed\u95e8\u8bfe\u7a0b\u8bbe\u7f6e\u957f\u7f13\u5b58\u5e76\u5f00\u542f\u5206\u7247\/\u591a\u6e90\u52a0\u901f\u3002<\/li>\n<li>\u534f\u8bae\u4f18\u5316\uff1a\u542f\u7528 HTTP\/2\/3\u3001TLS \u52a0\u901f\u4e0e WebRTC \u652f\u6301\uff0c\u6d4b\u8bd5\u4f4e\u5ef6\u8fdf\u76f4\u64ad\u94fe\u8def\u3002<\/li>\n<li>\u538b\u6d4b\u4e0e\u4e0a\u7ebf\uff1a\u8fdb\u884c\u5e76\u53d1\u538b\u6d4b\u4e0e\u65ad\u6d41\u6062\u590d\u6d4b\u8bd5\uff0c\u8c03\u6574\u9650\u6d41\u7b56\u7565\u4e0e\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<li>\u6301\u7eed\u4f18\u5316\uff1a\u57fa\u4e8e\u76d1\u63a7\u6570\u636e\u4f18\u5316\u5206\u53d1\u7b56\u7565\u3001\u8c03\u6574\u8fb9\u7f18\u914d\u7f6e\u5e76\u5b9a\u671f\u6e05\u7406\u6216\u9884\u70ed\u7f13\u5b58\u3002<\/li>\n<\/ul>\n<p><strong>\u6e29\u99a8\u63d0\u793a\uff1a<\/strong>\u5bf9\u4e8e\u8de8\u5883\u6559\u80b2\u5e73\u53f0\uff0c\u57df\u540d\u89e3\u6790\u4e0e\u6ce8\u518c\u4e5f\u662f\u81f3\u5173\u91cd\u8981\u7684\u73af\u8282\u3002\u5408\u7406\u7684\u57df\u540d\u6ce8\u518c\u548c DNS Anycast \u914d\u7f6e\uff0c\u80fd\u4e0e CDN \u7684\u667a\u80fd\u8c03\u5ea6\u914d\u5408\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u89e3\u6790\u901f\u5ea6\u4e0e\u7a33\u5b9a\u6027\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u5408\u7406\u5f15\u5165 CDN\uff0c\u5e76\u7ed3\u5408\u534f\u8bae\u4f18\u5316\u3001\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u5206\u5c42\u7f13\u5b58\u7b56\u7565\uff0c\u5728\u7ebf\u6559\u80b2\u5e73\u53f0\u53ef\u4ee5\u5728\u4f4e\u5ef6\u8fdf\u548c\u9ad8\u5e76\u53d1\u4e4b\u95f4\u627e\u5230\u5e73\u8861\uff0c\u663e\u8457\u63d0\u5347\u8bfe\u5802\u4f53\u9a8c\u4e0e\u7cfb\u7edf\u7a33\u5b9a\u6027\u3002\u5c24\u5176\u5728\u9762\u5411\u4e9a\u6d32\u4e0e\u5317\u7f8e\u5b66\u5458\u65f6\uff0c\u9009\u62e9\u5728\u9999\u6e2f\u3001\u65e5\u672c\u3001\u97e9\u56fd\u3001\u65b0\u52a0\u5761\u7b49\u5730\u5177\u6709\u826f\u597d\u8282\u70b9\u8986\u76d6\u7684 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