{"id":34464,"date":"2026-07-23T15:55:51","date_gmt":"2026-07-23T07:55:51","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/choosing-cdn-origin-bandwidth-for-high-traffic-sites\/"},"modified":"2026-07-23T15:59:43","modified_gmt":"2026-07-23T07:59:43","slug":"choosing-cdn-origin-bandwidth-for-high-traffic-sites","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/knowledge\/choosing-cdn-origin-bandwidth-for-high-traffic-sites\/","title":{"rendered":"\u5982\u4f55\u4e3a\u9ad8\u5e76\u53d1\u3001\u9ad8\u6d41\u91cf\u7f51\u7ad9\u9009\u62e9CDN\u548c\u6e90\u7ad9\u5e26\u5bbd"},"content":{"rendered":"<style>\n    table, th, td {\n        border: 1px solid black;\n        border-collapse: collapse;\n    }\n<\/style>\n<p>\u4f60\u9700\u8981\u6839\u636e\u7f51\u7ad9\u7684\u5cf0\u503c\u6d41\u91cf\u3001\u5185\u5bb9\u7c7b\u578b\u3001\u7528\u6237\u5206\u5e03\uff0c\u4ee5\u53ca\u662f\u5426\u90e8\u7f72<a target=\"_blank\" href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u6216\u5176\u4ed6\u533a\u57df\u57fa\u7840\u8bbe\u65bd\uff0c\u6765\u9009\u62e9\u5408\u9002\u7684<a target=\"_blank\" href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/does-cdn-caching-really-slow-down-your-website\/\">CDN<\/a>\u548c\u6e90\u7ad9\u5e26\u5bbd\u3002\u51c6\u786e\u7684\u5e26\u5bbd\u9884\u4f30\u6709\u52a9\u4e8e\u63d0\u5347\u6027\u80fd\u3001\u53ef\u9760\u6027\u5e76\u63a7\u5236\u6210\u672c\u3002CDN\u901a\u8fc7\u51cf\u5c11\u670d\u52a1\u5668\u8d1f\u8f7d\u3001\u964d\u4f4e\u5e26\u5bbd\u6d88\u8017\u6765\u5e2e\u52a9\u4f60\u8282\u7701\u8d39\u7528\uff0c\u540c\u65f6\u8fd8\u80fd\u589e\u5f3a\u5b89\u5168\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002\u4e0b\u8868\u5c55\u793a\u4e86\u8fd1\u671f\u6848\u4f8b\u7814\u7a76\u4e2d\uff0c\u603b\u7ed3\u51fa\u7684\u5173\u952e\u6210\u672c\u8282\u7ea6\u6536\u76ca\uff1a<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 75px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6536\u76ca<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u8bf4\u660e<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6210\u672c\u8282\u7ea6\u70b9<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u964d\u4f4e\u670d\u52a1\u5668\u8d1f\u8f7d<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>CDN\u5c06\u5185\u5bb9\u5206\u53d1\u5230\u5168\u7403\u5404\u5730<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u51cf\u5c11\u8fd0\u7ef4\u548c\u57fa\u7840\u8bbe\u65bd\u6210\u672c<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u964d\u4f4e\u5e26\u5bbd\u6d88\u8017<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>CDN\u7f29\u77ed\u6570\u636e\u4f20\u8f93\u8ddd\u79bb<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u51cf\u5c11\u6570\u636e\u4f20\u8f93\u8d39\u7528<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u63d0\u9ad8\u5b89\u5168\u6027<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>CDN\u53ef\u9632\u5fa1DDoS\u653b\u51fb<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u907f\u514d\u5b95\u673a\uff0c\u51cf\u5c11\u6f5c\u5728\u6536\u5165\u635f\u5931<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u63d0\u5347SEO\u6392\u540d<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u66f4\u5feb\u7684\u9875\u9762\u52a0\u8f7d\u901f\u5ea6<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u66f4\u9ad8\u66dd\u5149\u53ef\u5e26\u6765\u66f4\u591a\u6d41\u91cf\u548c\u6536\u5165<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u589e\u5f3a\u53ef\u6269\u5c55\u6027<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>CDN\u53ef\u5728\u6d41\u91cf\u9ad8\u5cf0\u671f\u5feb\u901f\u6269\u5c55<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u65e0\u9700\u989d\u5916\u57fa\u7840\u8bbe\u65bd\u6295\u5165\u5373\u53ef\u83b7\u5f97\u7075\u6d3b\u6027<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2>\u5173\u952e\u8981\u70b9<\/h2>\n<ul>\n<li>\n<p>\u9884\u4f30\u7f51\u7ad9\u5cf0\u503c\u6d41\u91cf\u4ee5\u786e\u5b9a\u5e26\u5bbd\u9700\u6c42\u3002\u4f7f\u7528 Google Analytics \u7b49\u5de5\u5177\u8ddf\u8e2a\u6d41\u91cf\u6a21\u5f0f\uff0c\u4e3a\u7a81\u53d1\u6d41\u91cf\u505a\u597d\u51c6\u5907\u3002<\/p>\n<\/li>\n<li>\n<p>\u9009\u62e9\u5177\u5907\u5f3a\u5927\u7f13\u5b58\u7b56\u7565\u7684CDN\u3002\u9ad8\u6548\u7684\u7f13\u5b58\u53ef\u5c06\u5e26\u5bbd\u6d88\u8017\u964d\u4f4e\u591a\u8fbe80%\uff0c\u63d0\u5347\u6027\u80fd\u5e76\u964d\u4f4e\u6210\u672c\u3002<\/p>\n<\/li>\n<li>\n<p>\u6839\u636e\u7528\u6237\u5206\u5e03\u9009\u62e9CDN\u670d\u52a1\u3002\u5177\u5907\u5168\u7403\u8282\u70b9\u5e03\u5c40\u7684CDN\u53ef\u4ee5\u4e3a\u5404\u5730\u533a\u7528\u6237\u63d0\u4f9b\u66f4\u5feb\u7684\u5185\u5bb9\u5206\u53d1\u4f53\u9a8c\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u76d1\u63a7\u7f13\u5b58\u6027\u80fd\u3002\u901a\u8fc7\u8c03\u6574\u7f13\u5b58\u89c4\u5219\u51cf\u5c11\u7f13\u5b58\u672a\u547d\u4e2d\uff0c\u907f\u514d\u5e26\u5bbd\u4f7f\u7528\u4e0a\u6da8\u548c\u7f51\u7ad9\u53d8\u6162\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u5ba1\u67e5CDN\u548c\u6e90\u7ad9\u5e26\u5bbd\u6210\u672c\u3002\u51fa\u53e3\u6d41\u91cf\u8d39\u7528\u4f1a\u663e\u8457\u5f71\u54cd\u9884\u7b97\uff0c\u5e94\u4e3a\u5f02\u5e38\u652f\u51fa\u8bbe\u7f6e\u544a\u8b66\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u5f71\u54cd\u5e26\u5bbd\u7684\u56e0\u7d20<\/h2>\n<h3>\u5cf0\u503c\u6d41\u91cf<\/h3>\n<p>\u4f60\u5fc5\u987b\u4e86\u89e3\u7f51\u7ad9\u7684\u5cf0\u503c\u6d41\u91cf\uff0c\u624d\u80fd\u51c6\u786e\u4f30\u7b97\u5e26\u5bbd\u9700\u6c42\u3002\u5cf0\u503c\u6d41\u91cf\u6307\u5728\u9ad8\u5cf0\u65f6\u6bb5\uff08\u5982\u79d2\u6740\u3001\u76f4\u64ad\u6d3b\u52a8\uff09\u5185\uff0c\u8bbf\u95ee\u91cf\u548c\u6570\u636e\u4f20\u8f93\u91cf\u7684\u6700\u9ad8\u6c34\u5e73\u3002\u6d41\u91cf\u6fc0\u589e\u53ef\u80fd\u8ba9\u5e26\u5bbd\u9700\u6c42\u8fdc\u8d85\u65e5\u5e38\u6c34\u5e73\uff0c\u5982\u679c\u4e0d\u63d0\u524d\u89c4\u5212\uff0c\u5c31\u5bb9\u6613\u51fa\u73b0\u53d8\u6162\u751a\u81f3\u5b95\u673a\u3002Google Analytics 4 \u548c Google Search Console \u7b49\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u4f60\u8ddf\u8e2a\u6d41\u91cf\u6a21\u5f0f\u5e76\u8bc6\u522b\u9ad8\u5cf0\u65f6\u6bb5\u3002\u5f53\u4f60\u9009\u62e9\u4f7f\u7528CDN\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5c06\u5185\u5bb9\u5206\u53d1\u5230\u591a\u53f0\u670d\u52a1\u5668\u6765\u66f4\u597d\u5730\u5e94\u5bf9\u7a81\u53d1\u9700\u6c42\u3002\u63d0\u5347\u7f13\u5b58\u547d\u4e2d\u7387\u4e5f\u80fd\u51cf\u8f7b\u6e90\u7ad9\u538b\u529b\u3002\u4f8b\u5982\uff0c\u5c06\u7f13\u5b58\u547d\u4e2d\u7387\u4ece90%\u63d0\u9ad8\u523095%\uff0c\u5c31\u80fd\u5c06\u56de\u6e90\u8bf7\u6c42\u6570\u91cf\u51cf\u5c11\u4e00\u534a\uff0c\u663e\u8457\u964d\u4f4e\u5e26\u5bbd\u6d88\u8017\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u6c38\u8fdc\u6309\u201c\u6700\u9ad8\u53ef\u80fd\u6d41\u91cf\u201d\u800c\u4e0d\u662f\u201c\u5e73\u5747\u6d41\u91cf\u201d\u6765\u89c4\u5212\u3002<\/p>\n<\/blockquote>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6d41\u91cf\u7ea7\u522b<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5e26\u5bbd\u9700\u6c42<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4f4e\uff081,000 \u8bbf\u5ba2\/\u6708\uff09<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>1\u20132 GB<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e2d\uff0810,000 \u8bbf\u5ba2\/\u6708\uff09<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>10\u201320 GB<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u9ad8\uff08100,000 \u8bbf\u5ba2\/\u6708\uff09<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>100\u2013200 GB<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>\u7528\u6237\u5206\u5e03<\/h3>\n<p>\u7528\u6237\u6240\u5728\u5730\u57df\u4f1a\u5f71\u54cd\u4f60\u9700\u8981\u591a\u5c11\u5e26\u5bbd\uff0c\u4ee5\u53ca\u5728\u54ea\u4e9b\u533a\u57df\u9700\u8981\u66f4\u591a\u5e26\u5bbd\u3002\u5982\u679c\u4f60\u7684\u53d7\u4f17\u662f\u5168\u7403\u7528\u6237\uff0c\u5c31\u5fc5\u987b\u4e3a\u591a\u5730\u533a\u63d0\u4f9b\u5feb\u901f\u5185\u5bb9\u5206\u53d1\u3002CDN\u901a\u8fc7\u5728\u4e0d\u540c\u533a\u57df\u90e8\u7f72\u8282\u70b9\u6765\u63d0\u5347\u5730\u57df\u8986\u76d6\uff0c\u4ece\u800c\u4e3a\u5404\u5730\u7528\u6237\u63d0\u4f9b\u66f4\u9ad8\u7684\u901f\u5ea6\u548c\u53ef\u9760\u6027\u3002\u5149\u7ea4\u7b49\u9ad8\u901f\u8fde\u63a5\u53ef\u5e26\u6765\u6700\u4f73\u4f53\u9a8c\uff0c\u800cDSL\u6216\u536b\u661f\u7f51\u7edc\u5219\u53ef\u80fd\u9650\u5236\u5e26\u5bbd\u3002\u5f53\u4f60\u9009\u62e9\u62e5\u6709\u5e7f\u6cdb\u8282\u70b9\u5206\u5e03\u7684CDN\u670d\u52a1\u5546\u65f6\uff0c\u5c31\u80fd\u5728\u9ad8\u9700\u6c42\u573a\u666f\u4e0b\u4fdd\u6301\u826f\u597d\u7684\u6269\u5c55\u6027\u548c\u4f20\u8f93\u901f\u5ea6\u3002<\/p>\n<ul>\n<li>\n<p>\u670d\u52a1\u5668\u5206\u5e03\u8d8a\u5e7f\uff0c\u5185\u5bb9\u4f20\u8f93\u901f\u5ea6\u8d8a\u5feb\u3002<\/p>\n<\/li>\n<li>\n<p>\u66f4\u9ad8\u5e26\u5bbd\u53ef\u652f\u6301\u66f4\u5feb\u7684\u6570\u636e\u4f20\u8f93\u80fd\u529b\u3002<\/p>\n<\/li>\n<li>\n<p>\u826f\u597d\u7684\u53ef\u6269\u5c55\u6027\u8ba9\u7f51\u7ad9\u5728\u6269\u5f20\u65f6\u4ecd\u4fdd\u6301\u6027\u80fd\u7a33\u5b9a\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u5185\u5bb9\u7c7b\u578b<\/h3>\n<p>\u4f60\u63d0\u4f9b\u7684\u5185\u5bb9\u7c7b\u578b\u4e5f\u4f1a\u6539\u53d8\u5e26\u5bbd\u9700\u6c42\u3002\u7eaf\u6587\u672c\u9875\u9762\u5360\u7528\u7684\u5e26\u5bbd\u5f88\u5c11\uff0c\u800c\u56fe\u7247\u3001\u89c6\u9891\u4e0e\u4e0b\u8f7d\u5185\u5bb9\u4f1a\u663e\u8457\u63d0\u9ad8\u5e26\u5bbd\u5360\u7528\u3002\u5c24\u5176\u662f\u4f7f\u7528\u81ea\u9002\u5e94\u6280\u672f\u7684\u6d41\u5a92\u4f53\u89c6\u9891\uff0c\u4f1a\u6839\u636e\u7528\u6237\u7f51\u7edc\u72b6\u51b5\u81ea\u52a8\u8c03\u6574\u753b\u8d28\uff0c\u4ece\u800c\u5e2e\u52a9\u63a7\u5236\u5e26\u5bbd\u3002\u4e2a\u6027\u5316\u9875\u9762\u7b49\u52a8\u6001\u5185\u5bb9\u6bd4\u9759\u6001\u6587\u4ef6\u66f4\u6d88\u8017\u5e26\u5bbd\u3002\u901a\u8fc7\u4f18\u5316\u6587\u4ef6\u5927\u5c0f\u548c\u5229\u7528\u7f13\u5b58\u7b56\u7565\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u5e26\u5bbd\u4f7f\u7528\u3002\u5982\u679c\u4f60\u63d0\u4f9b\u53ef\u4e0b\u8f7d\u6587\u4ef6\u6216\u9ad8\u5206\u8fa8\u7387\u5a92\u4f53\uff0c\u5c31\u5fc5\u987b\u4e3a\u66f4\u9ad8\u5e26\u5bbd\u505a\u597d\u89c4\u5212\u3002<\/p>\n<ul>\n<li>\n<p>\u6587\u672c\u5185\u5bb9\u51e0\u4e4e\u4e0d\u5360\u7528\u591a\u5c11\u5e26\u5bbd\u3002<\/p>\n<\/li>\n<li>\n<p>\u56fe\u7247\u3001\u89c6\u9891\u7b49\u5bcc\u5a92\u4f53\u4f1a\u663e\u8457\u589e\u52a0\u5e26\u5bbd\u6d88\u8017\u3002<\/p>\n<\/li>\n<li>\n<p>\u81ea\u9002\u5e94\u89c6\u9891\u6d41\u4f1a\u6839\u636e\u7f51\u7edc\u901f\u5ea6\u5339\u914d\u753b\u8d28\uff0c\u4ece\u800c\u8282\u7701\u5e26\u5bbd\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u5e26\u5bbd\u8ba1\u7b97<\/h2>\n<h3>\u9700\u6c42\u9884\u4f30<\/h3>\n<p>\u5728\u9009\u62e9CDN\u548c\u6e90\u7ad9\u8d44\u6e90\u4e4b\u524d\uff0c\u4f60\u9700\u8981\u5148\u9884\u4f30\u7f51\u7ad9\u7684\u5e26\u5bbd\u9700\u6c42\u3002\u8fd9\u6709\u52a9\u4e8e\u907f\u514d\u6027\u80fd\u74f6\u9888\u548c\u610f\u5916\u6210\u672c\u3002\u53ef\u4ee5\u6309\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\u4f30\u7b97\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u786e\u5b9a\u8ba1\u91cf\u5355\u4f4d<\/strong><br \/>\u9996\u5148\u8981\u51b3\u5b9a\u4ee5\u4ec0\u4e48\u5355\u4f4d\u6765\u8861\u91cf\u5e26\u5bbd\uff0c\u5982\u6bcf\u79d2\u5146\u6bd4\u7279\uff08Mbps\uff09\u3001\u6bcf\u6708GB\u6d41\u91cf\u7b49\u3002\u5927\u591a\u6570\u7f51\u7ad9\u4f1a\u7528GB\u6216TB\u6765\u7edf\u8ba1\u6bcf\u6708\u6570\u636e\u4f20\u8f93\u91cf\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4f30\u7b97\u6bcf\u6b21\u64cd\u4f5c\u7684\u6570\u636e\u91cf<\/strong><br \/>\u8ba1\u7b97\u4e00\u6b21\u9875\u9762\u52a0\u8f7d\u3001\u4e00\u6b21\u89c6\u9891\u64ad\u653e\u6216\u4e00\u6b21\u6587\u4ef6\u4e0b\u8f7d\u7684\u5927\u81f4\u6570\u636e\u5927\u5c0f\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5178\u578b\u7f51\u9875\u53ef\u80fd\u662f 2 MB\uff0c\u800c\u4e00\u4e2a\u89c6\u9891\u6d41\u53ef\u80fd\u5728 3 Mbps \u5de6\u53f3\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u786e\u5b9a\u64cd\u4f5c\u9891\u7387<\/strong><br \/>\u4e86\u89e3\u7528\u6237\u6bcf\u5929\u6267\u884c\u8fd9\u4e9b\u64cd\u4f5c\u7684\u6b21\u6570\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u5206\u6790\u5de5\u5177\u7edf\u8ba1\u9875\u9762\u6d4f\u89c8\u91cf\u3001\u4e0b\u8f7d\u91cf\u6216\u89c6\u9891\u64ad\u653e\u6b21\u6570\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4f7f\u7528\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97<\/strong><br \/>\u5c06\u5355\u6b21\u6570\u636e\u91cf\u4e58\u4ee5\u64cd\u4f5c\u6b21\u6570\uff0c\u5373\u53ef\u5f97\u5230\u6bcf\u65e5\u6216\u6bcf\u6708\u7684\u5e26\u5bbd\u9884\u4f30\u503c\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u52a0\u5165\u5197\u4f59\u548c\u5b89\u5168\u88d5\u91cf<\/strong><br \/>\u4e00\u5b9a\u8981\u4e3a\u7a81\u53d1\u6d41\u91cf\u9884\u7559\u989d\u5916\u5bb9\u91cf\u3002\u5bf9\u4e8e\u9ad8\u5e76\u53d1\u7f51\u7ad9\uff0c\u9884\u755920%\u5de6\u53f3\u7684\u5b89\u5168\u88d5\u91cf\u662f\u8f83\u5e38\u89c1\u7684\u505a\u6cd5\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u9884\u6d4b\u5206\u6790\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u5347\u9884\u4f30\u7cbe\u5ea6\u3002\u8bb8\u591a\u4f01\u4e1a\u4f1a\u5206\u6790\u5386\u53f2\u6570\u636e\u6765\u9884\u6d4b\u672a\u6765\u5e26\u5bbd\u9700\u6c42\u3002\u4f8b\u5982\uff0c\u4e00\u5bb6\u5168\u7403\u54a8\u8be2\u516c\u53f8\u4f7f\u7528\u9884\u6d4b\u6a21\u578b\u4e3a85\u4e2a\u529e\u516c\u5ba4\u89c4\u5212\u89c6\u9891\u4f1a\u8bae\u5e26\u5bbd\uff0c\u5e76\u6784\u5efa\u4e86\u4ea4\u4e92\u5f0f\u4eea\u8868\u76d8\u5e2e\u52a9\u5404\u65b9\u51b3\u7b56\u3002<\/p>\n<h3>\u8ba1\u7b97\u516c\u5f0f<\/h3>\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528\u884c\u4e1a\u5e38\u7528\u516c\u5f0f\u6765\u8ba1\u7b97\u6240\u9700\u5e26\u5bbd\uff0c\u8fd9\u6709\u52a9\u4e8e\u540c\u65f6\u89c4\u5212CDN\u548c\u6e90\u7ad9\u5e26\u5bbd\u3002<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u516c\u5f0f\u7c7b\u578b<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u516c\u5f0f<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6708\u5ea6\u6570\u636e\u4f20\u8f93\u9884\u4f30<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\uff08\u5e73\u5747\u9875\u9762\u5927\u5c0fMB \u00d7 \u6708\u8bbf\u95ee\u91cf \u00d7 \u6bcf\u6b21\u8bbf\u95ee\u5e73\u5747\u6d4f\u89c8\u9875\u9762\u6570\uff09\u00f7 1,024 = \u9884\u4f30\u6708\u5ea6\u5e26\u5bbd\uff08GB\uff09<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6d41\u5a92\u4f53\u5e26\u5bbd<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5e76\u53d1\u89c2\u770b\u4eba\u6570 \u00d7 \u7801\u7387\uff08Mbps\uff09 = \u6240\u9700\u7aef\u53e3\u5bb9\u91cf\uff08Mbps\uff09<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u9875\u9762\u5e73\u5747\u5927\u5c0f\u4e3a 2 MB\uff0c\u6bcf\u6708\u6709 100,000 \u540d\u8bbf\u5ba2\uff0c\u6bcf\u4f4d\u8bbf\u5ba2\u5e73\u5747\u6d4f\u89c8 5 \u4e2a\u9875\u9762\uff0c\u5219\u9884\u4f30\u6708\u5ea6\u5e26\u5bbd\u4e3a\uff1a<br \/>\uff082 \u00d7 100,000 \u00d7 5\uff09\u00f7 1,024 \u2248 976 GB<\/p>\n<p>\u5728\u9009\u62e9CDN\u89e3\u51b3\u65b9\u6848\u65f6\uff0c\u8981\u8bb0\u4f4f\u7f13\u5b58\u547d\u4e2d\u7387\uff08Cache Hit Ratio\uff0c\u7b80\u79f0 CHR\uff09\u4f1a\u76f4\u63a5\u5f71\u54cd\u6e90\u7ad9\u5e26\u5bbd\u9700\u6c42\uff1a<\/p>\n<ul>\n<li>\n<p>CHR \u8d8a\u9ad8\uff0c\u8d8a\u591a\u8bf7\u6c42\u7531CDN\u7f13\u5b58\u76f4\u63a5\u54cd\u5e94\u3002<\/p>\n<\/li>\n<li>\n<p>\u56de\u6e90\u8bf7\u6c42\u8d8a\u5c11\uff0c\u6e90\u7ad9\u538b\u529b\u8d8a\u4f4e\u3002<\/p>\n<\/li>\n<li>\n<p>\u6e90\u7ad9\u9700\u8981\u627f\u62c5\u7684\u5e26\u5bbd\u4e5f\u968f\u4e4b\u51cf\u5c11\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5982\u679cCDN\u7684CHR\u8fbe\u523095%\uff0c\u90a3\u4e48\u53ea\u67095%\u7684\u8bf7\u6c42\u4f1a\u56de\u6e90\u3002\u4e0e\u5b8c\u5168\u4e0d\u4f7f\u7528\u7f13\u5b58\u7684\u7ad9\u70b9\u76f8\u6bd4\uff0c\u8fd9\u53ef\u4ee5\u5c06\u6e90\u7ad9\u5e26\u5bbd\u9700\u6c42\u964d\u4f4e\u7ea620\u500d\u3002<\/p>\n<h3>\u793a\u4f8b\u573a\u666f<\/h3>\n<p>\u4e0b\u9762\u901a\u8fc7\u4e00\u4e9b\u771f\u5b9e\u573a\u666f\uff0c\u6765\u770b\u770b\u8fd9\u4e9b\u8ba1\u7b97\u5982\u4f55\u843d\u5730\uff1a<\/p>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 125px;\">\n<colgroup>\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u573a\u666f<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u65e5\u8bbf\u5ba2\u6570<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5e73\u5747\u9875\u9762\u5927\u5c0f<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6bcf\u65e5\u5e26\u5bbd<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6bcf\u6708\u5e26\u5bbd<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e2a\u4eba\u535a\u5ba2<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>500<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>1 MB<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>500 MB<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>15 GB<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6570\u5b57\u4f5c\u54c1\u96c6<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>200<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>10 MB<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>2,000 MB<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>60 GB<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u5047\u8bbe\u4f60\u8fd0\u8425\u7684\u662f\u4e00\u4e2a\u6bcf\u65e5 200 \u8bbf\u5ba2\u3001\u5e73\u5747\u9875\u9762\u5927\u5c0f\u4e3a 10 MB \u7684\u6570\u5b57\u4f5c\u54c1\u96c6\u7ad9\u70b9\u3002\u6bcf\u65e5\u5e26\u5bbd\u5927\u7ea6\u4e3a 2,000 MB\uff082 GB\uff09\uff0c\u6bcf\u6708\u5e26\u5bbd\u7ea6\u4e3a 60 GB\u3002\u5982\u679c\u4f60\u9009\u62e9CDN\u5e76\u5b9e\u73b090%\u7684\u7f13\u5b58\u547d\u4e2d\u7387\uff0c\u90a3\u4e48\u53ea\u670910%\u7684\u8bf7\u6c42\u4f1a\u56de\u6e90\uff0c\u6e90\u7ad9\u6bcf\u6708\u53ea\u9700\u627f\u62c5\u7ea6 6 GB \u5e26\u5bbd\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u5728\u9009\u62e9CDN\u670d\u52a1\u5546\u65f6\uff0c\u8981\u5bf9\u6bd4\u5176\u7f13\u5b58\u6548\u7387\u548c\u670d\u52a1\u8d28\u91cf\u3002\u4e00\u4e9b\u591aCDN\uff08pan-CDN\uff09\u65b9\u6848\u80fd\u63d0\u4f9b\u66f4\u9ad8\u541e\u5410\u548c\u66f4\u4f4e\u6ce2\u52a8\uff0c\u800c\u53e6\u4e00\u4e9b\u65b9\u6848\u6210\u672c\u66f4\u4f4e\u4f46\u6027\u80fd\u6ce2\u52a8\u66f4\u5927\u3002\u52a1\u5fc5\u5728\u6210\u672c\u3001\u8d28\u91cf\u548c\u7528\u6237\u4f53\u9a8c\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/p>\n<\/blockquote>\n<div fullwidth=\"\" class=\"qc-default-table-wrapper \">\n<table style=\"min-width: 221px;\">\n<colgroup>\n<col style=\"width: 146px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\">\n<col style=\"min-width: 25px;\"><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\" colwidth=\"146\">\n<p>\u591aCDN\u7c7b\u578b<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6210\u672c\u6c34\u5e73<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u5e73\u5747\u670d\u52a1\u8d28\u91cf<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7528\u6237\u4f53\u9a8c\u6ce2\u52a8<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" colwidth=\"146\">\n<p>pan-CDN1<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6700\u9ad8<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6700\u4f73<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>65% \u541e\u5410\u7387\u5904\u4e8e\u6700\u4f18\u6c34\u5e73<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" colwidth=\"146\">\n<p>pan-CDN2<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e2d\u7b49<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e2d\u7b49<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6ce2\u52a8\u8f83\u5927<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" colwidth=\"146\">\n<p>pan-CDN3<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u8f83\u4f4e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u8f83\u4f4e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6ce2\u52a8\u8f83\u9ad8<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\" colwidth=\"146\">\n<p>pan-CDN4<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6700\u4f4e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6700\u4f4e<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6ce2\u52a8\u975e\u5e38\u9ad8<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u4f60\u5e94\u59cb\u7ec8\u9009\u62e9\u4e0e\u81ea\u8eab\u6d41\u91cf\u6a21\u5f0f\u548c\u6027\u80fd\u9700\u6c42\u5339\u914d\u7684CDN\u65b9\u6848\u3002\u901a\u8fc7\u7cbe\u786e\u8ba1\u7b97\u4e0e\u5408\u7406\u89c4\u5212\uff0c\u53ef\u4ee5\u4e3a\u6240\u6709\u7528\u6237\u63d0\u4f9b\u5feb\u901f\u800c\u7a33\u5b9a\u7684\u8bbf\u95ee\u4f53\u9a8c\u3002<\/p>\n<h2>\u9009\u62e9CDN\u7279\u6027<\/h2>\n<p>\u5728\u4e3a\u9ad8\u5e76\u53d1\u3001\u9ad8\u6d41\u91cf\u573a\u666f\u9009\u62e9CDN\u65f6\uff0c\u4f60\u5fc5\u987b\u5173\u6ce8\u90a3\u4e9b\u5bf9\u6027\u80fd\u3001\u53ef\u9760\u6027\u548c\u53ef\u6269\u5c55\u6027\u5f71\u54cd\u6700\u5927\u7684\u529f\u80fd\u3002\u4e0d\u540cCDN\u63d0\u4f9b\u5546\u5404\u6709\u4fa7\u91cd\uff0c\u4f60\u9700\u8981\u7ed3\u5408\u81ea\u8eab\u4e1a\u52a1\u8d1f\u8f7d\u548c\u76ee\u6807\u6765\u505a\u5bf9\u6bd4\u3002<\/p>\n<h3>\u7f13\u5b58\u7b56\u7565<\/h3>\n<p>\u7f13\u5b58\u662f\u51cf\u5c11\u6e90\u7ad9\u5e26\u5bbd\u6d88\u8017\u7684\u6700\u6709\u6548\u65b9\u5f0f\u4e4b\u4e00\u3002\u4f60\u53ef\u4ee5\u5229\u7528CDN\u5c06\u70ed\u95e8\u5185\u5bb9\u7f13\u5b58\u5230\u79bb\u7528\u6237\u66f4\u8fd1\u7684\u8282\u70b9\uff0c\u4ece\u800c\u51cf\u5c11\u56de\u6e90\u8bf7\u6c42\u5e76\u52a0\u5feb\u52a0\u8f7d\u901f\u5ea6\u3002<\/p>\n<ul>\n<li>\n<p>\u5bf9\u4e8e\u70ed\u95e8\u5185\u5bb9\uff0c\u7f13\u5b58\u53ef\u4ee5\u5c06\u5e26\u5bbd\u6d88\u8017\u51cf\u5c11 70\u201380%\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f18\u5316\u826f\u597d\u7684\u7f13\u5b58\u914d\u7f6e\uff0c\u7f13\u5b58\u547d\u4e2d\u7387\u5e38\u5e38\u80fd\u8d85\u8fc7 90%\u3002<\/p>\n<\/li>\n<li>\n<p>\u7f13\u5b58\u53ef\u5c06\u5904\u7406\u6548\u7387\u63d0\u5347\u6700\u9ad8\u7ea6 30%\uff0c\u5e76\u964d\u4f4e\u80fd\u6e90\u6d88\u8017\u6700\u9ad8\u7ea6 30%\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4f60\u5e94\u9009\u62e9\u63d0\u4f9b\u7075\u6d3b\u7f13\u5b58\u89c4\u5219\u548c\u5b9e\u65f6\u7f13\u5b58\u5237\u65b0\u80fd\u529b\u7684CDN\u670d\u52a1\u5546\u3002\u4f8b\u5982\uff0cFastly \u63d0\u4f9b\u5168\u7403\u5373\u65f6\u6e05\u7f13\u5b58\u548c\u9762\u5411\u5f00\u53d1\u8005\u7684\u7cbe\u7ec6\u63a7\u5236\uff1bGoogle Media CDN \u901a\u8fc7\u6df1\u5ea6\u5206\u5c42\u7f13\u5b58\u6765\u5b9e\u73b0\u9ad8\u56de\u6e90\u5378\u8f7d\u7387\uff1bCloudflare \u548c Akamai \u5219\u63d0\u4f9b\u53ef\u7f16\u7a0b\u7f13\u5b58\u4e0e\u8fb9\u7f18\u903b\u8f91\u3002\u8fd9\u4e9b\u80fd\u529b\u6709\u52a9\u4e8e\u4f60\u4ece\u5bb9\u5e94\u5bf9\u7a81\u53d1\u6d41\u91cf\u5cf0\u503c\uff0c\u4fdd\u969c\u7f51\u7ad9\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u4e3a\u56fe\u7247\u3001\u811a\u672c\u3001\u6837\u5f0f\u8868\u7b49\u9759\u6001\u8d44\u6e90\u8bbe\u7f6e\u957f\u65f6\u95f4\u7f13\u5b58\uff0c\u5bf9\u52a8\u6001\u5185\u5bb9\u5219\u4f7f\u7528\u8f83\u77ed\u7f13\u5b58\u65f6\u95f4\u4ee5\u4fdd\u8bc1\u65b0\u9c9c\u5ea6\u3002<\/p>\n<\/blockquote>\n<h3>\u5b89\u5168\u4e0eDDoS\u9632\u62a4<\/h3>\n<p>\u5b89\u5168\u529f\u80fd\u5728\u5e26\u5bbd\u89c4\u5212\u548c\u53ef\u9760\u6027\u65b9\u9762\u540c\u6837\u81f3\u5173\u91cd\u8981\u3002CDN\u53ef\u4ee5\u5e2e\u52a9\u4f60\u9632\u5fa1DDoS\u653b\u51fb\u548c\u5176\u4ed6\u7f51\u7edc\u5a01\u80c1\uff0c\u4f60\u9700\u8981\u8db3\u591f\u5f3a\u7684\u9632\u62a4\u80fd\u529b\u6765\u786e\u4fdd\u5728\u9ad8\u6d41\u91cf\u6216\u906d\u53d7\u653b\u51fb\u65f6\u4f9d\u7136\u4fdd\u6301\u5728\u7ebf\u3002<\/p>\n<ul>\n<li>\n<p>\u901a\u8fc7\u5b9e\u65f6\u76d1\u63a7\u53ca\u65e9\u53d1\u73b0\u653b\u51fb\u8ff9\u8c61\uff0c\u4fbf\u4e8e\u5feb\u901f\u54cd\u5e94\u3002<\/p>\n<\/li>\n<li>\n<p>\u5bf9\u653b\u51fb\u7c7b\u578b\u8fdb\u884c\u5206\u7c7b\uff0c\u6709\u52a9\u4e8e\u91c7\u7528\u6b63\u786e\u7684\u9632\u5fa1\u7b56\u7565\u3002<\/p>\n<\/li>\n<li>\n<p>\u591a\u5c42\u6b21\u9632\u62a4\u53ef\u4ee5\u5316\u89e3\u653b\u51fb\u5e76\u7ef4\u6301\u670d\u52a1\u53ef\u7528\u6027\u3002<\/p>\n<\/li>\n<li>\n<p>CDN\u53ef\u5728\u6d41\u91cf\u5230\u8fbe\u6e90\u7ad9\u524d\uff0c\u62e6\u622a 10\u2013100 Gbit\/s \u89c4\u6a21\u7684\u653b\u51fb\u6d41\u91cf\u3002<\/p>\n<\/li>\n<\/ul>\n<p>Cloudflare \u4ee5\u5438\u6536\u8d85\u5927\u89c4\u6a21\u653b\u51fb\u7684\u80fd\u529b\u548c\u5e7f\u6cdb\u7684\u5b89\u5168\u4e0e\u673a\u5668\u4eba\u9632\u62a4\u800c\u8457\u79f0\uff1bAkamai \u5728\u6536\u8d2d Noname \u540e\u6574\u5408\u4e86\u66f4\u5f3a\u5927\u7684\u5b89\u5168\u80fd\u529b\uff1bAWS CloudFront \u5219\u4e0e AWS Shield \u548c WAF \u6df1\u5ea6\u96c6\u6210\uff0c\u63d0\u4f9b\u591a\u5c42\u9632\u62a4\u3002\u8fd9\u4e9b\u7279\u6027\u5e2e\u52a9\u4f60\u7ba1\u7406\u5e26\u5bbd\u5e76\u5728\u9ad8\u6d41\u91cf\u573a\u666f\u4e0b\u4fdd\u6301\u7f51\u7ad9\u53ef\u9760\u8fd0\u884c\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u66f4\u9ad8\u7ea7\u7684\u5b89\u5168\u63aa\u65bd\u53ef\u80fd\u5e26\u6765\u989d\u5916\u6210\u672c\uff0c\u4f46\u80fd\u6709\u6548\u4fdd\u62a4\u4f60\u7684\u6536\u5165\u548c\u54c1\u724c\u58f0\u8a89\u3002<\/p>\n<\/blockquote>\n<h3>\u8fb9\u7f18\u6027\u80fd<\/h3>\n<p>\u8fb9\u7f18\u6027\u80fd\u51b3\u5b9a\u4e86\u5185\u5bb9\u5230\u8fbe\u7528\u6237\u7aef\u7684\u901f\u5ea6\u548c\u7a33\u5b9a\u6027\u3002CDN\u901a\u8fc7\u5728\u63a5\u8fd1\u7528\u6237\u7684\u4f4d\u7f6e\u90e8\u7f72\u8fb9\u7f18\u8282\u70b9\u6765\u63d0\u4f9b\u5185\u5bb9\uff0c\u4ece\u800c\u964d\u4f4e\u5ef6\u8fdf\u5e76\u6539\u5584\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<p>\u4f60\u5e94\u5f53\u4ece\u67b6\u6784\u3001\u8def\u7531\u7b56\u7565\u548c\u8fb9\u7f18\u8ba1\u7b97\u80fd\u529b\u7b49\u65b9\u9762\u5bf9\u6bd4\u4e0d\u540cCDN\u670d\u52a1\u5546\uff0c\u5e76\u9009\u62e9\u90a3\u4e9b\u5728\u53ef\u9760\u6027\u4fdd\u969c\u548c\u6280\u672f\u652f\u6301\u54cd\u5e94\u4e0a\u8868\u73b0\u51fa\u8272\u7684\u65b9\u6848\u3002<\/p>\n<blockquote>\n<p>\u63d0\u793a\uff1a\u5728\u9009\u62e9CDN\u63d0\u4f9b\u5546\u65f6\uff0c\u4e00\u5b9a\u8981\u4ed4\u7ec6\u67e5\u770b\u5176 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