{"id":36697,"date":"2026-10-21T10:47:17","date_gmt":"2026-10-21T02:47:17","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/why-bandwidth-isnt-maxed-out-but-downloads-are-still-slow\/"},"modified":"2026-10-21T10:49:50","modified_gmt":"2026-10-21T02:49:50","slug":"why-bandwidth-isnt-maxed-out-but-downloads-are-still-slow","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/why-bandwidth-isnt-maxed-out-but-downloads-are-still-slow\/","title":{"rendered":"\u70ba\u4ec0\u9ebc\u983b\u5bec\u6c92\u6709\u8dd1\u6eff\uff0c\u4f46\u4e0b\u8f09\u4f9d\u7136\u5f88\u6162"},"content":{"rendered":"<p>\n\u5f9e\u8868\u9762\u770b\uff0c\u9019\u50cf\u662f\u500b\u6096\u8ad6\uff1a\u4f60\u7684<br \/>\n<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/los-angeles\/cn2\/\" target=\"_blank\">\u7f8e\u570b\u4f3a\u670d\u5668<\/a><br \/>\n\u5728\u76e3\u63a7\u5716\u4e0a\u983b\u5bec\u5229\u7528\u7387\u5f88\u4f4e\uff0c\u4f46\u4f7f\u7528\u8005\u537b\u4f9d\u7136\u62b1\u6028\u4e0b\u8f09\u7de9\u6162\uff0c\u800c\u4f60\u7cbe\u5fc3\u8a2d\u5b9a\u7684\u95dc\u9375\u5b57\u7247\u8a9e\u300cUS server bandwidth optimization\uff08\u7f8e\u570b\u4f3a\u670d\u5668\u983b\u5bec\u512a\u5316\uff09\u300d\u5f77\u5f7f\u6210\u4e86\u4e00\u500b\u51b7\u7b11\u8a71\u3002\u5c0d\u5de5\u7a0b\u5e2b\u548c\u7dad\u904b\u5718\u968a\u4f86\u8aaa\uff0c\u9019\u7d55\u4e0d\u662f\u7c21\u55ae\u7684\u300c\u52a0\u5927\u983b\u5bec\u300d\u554f\u984c\uff0c\u800c\u662f\u5354\u5b9a\u884c\u70ba\u3001\u8def\u7531\u3001\u4f3a\u670d\u5668\u9650\u5236\u4ee5\u53ca\u8907\u96dc\u7684\u7528\u6236\u7aef\u771f\u5be6\u7db2\u8def\u74b0\u5883\u4ea4\u7e54\u5728\u4e00\u8d77\u7684\u7d50\u679c\u3002\n<\/p>\n<h2><strong>1. \u5206\u6e05\u983b\u5bec\u3001\u541e\u5410\u3001\u5ef6\u9072\u8207\u5c01\u5305\u907a\u5931<\/strong><\/h2>\n<p>\n\u5728\u6392\u67e5\u74f6\u9838\u4e4b\u524d\uff0c\u5148\u628a\u4eba\u5011\u5e38\u5e38\u7c60\u7d71\u7a31\u70ba\u300c\u901f\u5ea6\u300d\u7684\u56db\u500b\u6982\u5ff5\u5340\u5206\u958b\u4f86\u5f88\u6709\u5fc5\u8981\u3002\u5b83\u5011\u5f7c\u6b64\u95dc\u806f\uff0c\u537b\u4e0d\u80fd\u4e92\u76f8\u66ff\u4ee3\u3002\u5728\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u628a\u7406\u8ad6\u5bb9\u91cf\u548c\u5be6\u969b\u89c0\u6e2c\u5230\u7684\u541e\u5410\u6df7\u70ba\u4e00\u8ac7\uff0c\u5f80\u5f80\u6703\u63a9\u84cb\u771f\u6b63\u7684\u7d04\u675f\u3002\n<\/p>\n<ul>\n<li><strong>\u5df2\u914d\u7f6e\u983b\u5bec<\/strong>\uff1a\u93c8\u8def\u5408\u7d04\u4e2d\u7d04\u5b9a\u7684\u6700\u5927\u5bb9\u91cf\uff08\u4f8b\u5982\uff1a\u7368\u4eab\u57e0\u4e0a\u7684 1&nbsp;Gbps\uff09\u3002<\/li>\n<li><strong>\u541e\u5410\u91cf<\/strong>\uff1a\u5728\u4e00\u5b9a\u6642\u9593\u5167\u5be6\u969b\u50b3\u8f38\u7684\u8cc7\u6599\u91cf\uff0c\u5982\u6d41\u91cf\u65e5\u8a8c\u6216\u7528\u6236\u7aef\u4e0b\u8f09\u6e2c\u91cf\u503c\u4e2d\u770b\u5230\u7684\u6578\u5b57\u3002<\/li>\n<li><strong>\u5ef6\u9072\uff08\u6642\u5ef6\uff09<\/strong>\uff1a\u7528\u6236\u7aef\u8207\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u5f80\u8fd4\u6642\u9593\uff08RTT\uff09\uff0c\u53d7\u7269\u7406\u8ddd\u96e2\u548c\u8def\u7531\u7b56\u7565\u5f37\u70c8\u5f71\u97ff\u3002<\/li>\n<li><strong>\u5c01\u5305\u907a\u5931\u8207\u6296\u52d5<\/strong>\uff1a\u8cc7\u6599\u5c01\u5305\u907a\u5931\u548c\u5ef6\u9072\u6296\u52d5\u6703\u5c0e\u81f4\u91cd\u50b3\uff0c\u4e26\u5e72\u64fe\u58c5\u585e\u63a7\u5236\u6f14\u7b97\u6cd5\u7684\u5224\u65b7\u3002<\/li>\n<\/ul>\n<p>\n\u5373\u4fbf\u7f8e\u570b\u51fa\u53e3\u983b\u5bec\u5229\u7528\u7387\u5716\u8868\u7121\u804a\u5730\u505c\u7559\u5728 10\u201320%\uff0c\u7528\u6236\u7aef\u7684\u5be6\u969b\u541e\u5410\u4ecd\u7136\u53ef\u80fd\u56e0\u70ba 200&nbsp;ms \u7b49\u7d1a\u7684 RTT\u3001\u904e\u5c0f\u7684 TCP \u8996\u7a97\u6216\u8f15\u5fae\u5c01\u5305\u907a\u5931\u800c\u4e00\u843d\u5343\u4e08\u3002\u8981\u6709\u6548\u6392\u969c\uff0c\u4f60\u7684\u5fc3\u667a\u6a21\u578b\u5fc5\u9808\u628a\u9019\u4e9b\u770b\u4f5c\u76f8\u4e92\u7368\u7acb\u4f46\u5f7c\u6b64\u5f71\u97ff\u7684\u7dad\u5ea6\uff0c\u800c\u4e0d\u662f\u540c\u4e00\u6307\u6a19\u7684\u4e0d\u540c\u8aaa\u6cd5\u3002\n<\/p>\n<h2><strong>2. \u70ba\u4ec0\u9ebc\u300c\u983b\u5bec\u7a7a\u9592\u300d\u4e26\u4e0d\u4fdd\u8b49\u4e0b\u8f09\u5f88\u5feb<\/strong><\/h2>\n<p>\n\u7576\u4f7f\u7528\u8005\u5f9e\u7f8e\u570b\u4e3b\u6a5f\u4e0b\u8f09\u6642\u767c\u73fe\u901f\u5ea6\u6158\u6de1\uff0c\u4ed6\u5011\u5f80\u5f80\u6703\u60f3\uff1a\u4f60\u7684\u57e0\u53e3\u80af\u5b9a\u5df2\u7d93\u88ab\u6253\u6eff\u3002\u4f46\u5229\u7528\u7387\u5831\u8868\u537b\u7d93\u5e38\u5c55\u793a\u76f8\u53cd\u7684\u7d50\u679c\u3002\u9019\u7a2e\u5dee\u7570\u901a\u5e38\u610f\u5473\u8457\uff0c\u771f\u6b63\u7684\u74f6\u9838\u4e26\u4e0d\u5728\u6a5f\u623f\u51fa\u53e3\u2014\u2014\u800c\u662f\u5728\u7aef\u5230\u7aef\u8def\u5f91\u4e2d\u7684\u67d0\u500b\u74b0\u7bc0\uff0c\u5728\u9060\u9060\u4f4e\u65bc\u540d\u7fa9\u5bb9\u91cf\u7684\u5730\u65b9\u5c31\u5df2\u7d93\u5c0d\u6709\u6548\u541e\u5410\u300c\u5361\u6b7b\u300d\u4e86\u3002\n<\/p>\n<ol>\n<li><strong>\u93c8\u8def\u4e2d\u7684\u300c\u6728\u6876\u77ed\u677f\u300d<\/strong>\uff1a\u8def\u7531\u4e0a\u7684\u67d0\u4e00\u689d\u7a84\u93c8\u8def\u53ef\u4ee5\u9650\u5236\u6574\u9ad4\u6d41\u91cf\u7684\u4e0a\u9650\uff0c\u5373\u4f7f\u4f60\u7684\u8cc7\u6599\u4e2d\u5fc3\u908a\u7de3\u93c8\u8def\u975e\u5e38\u5bec\u88d5\u3002<\/li>\n<li><strong>\u5354\u5b9a\u884c\u70ba<\/strong>\uff1a\u58c5\u585e\u63a7\u5236\u6703\u5c0d\u5c01\u5305\u907a\u5931\u8207\u9ad8\u5ef6\u9072\u505a\u51fa\u4fdd\u5b88\u53cd\u61c9\uff0c\u5f9e\u800c\u8b93\u541e\u5410\u9577\u671f\u8655\u65bc\u504f\u4f4e\u6c34\u6e96\u3002<\/li>\n<li><strong>\u4f3a\u670d\u5668\u81ea\u8eab\u9650\u5236<\/strong>\uff1a\u884c\u7a0b\u3001\u78c1\u789f I\/O \u6216\u55ae\u9023\u7dda\u9650\u901f\uff0c\u90fd\u53ef\u80fd\u628a\u50b3\u8f38\u901f\u7387\u58d3\u5728\u9060\u4f4e\u65bc\u5be6\u9ad4\u7dda\u8def\u901f\u5ea6\u7684\u6c34\u6e96\u4e0a\u3002<\/li>\n<li><strong>\u7528\u6236\u7aef\u5074\u4e0a\u9650<\/strong>\uff1a\u5bb6\u5ead\u5bec\u983b\u548c\u8f03\u5dee\u7684 Wi\u2011Fi \u93c8\u8def\u5728\u5be6\u969b\u8868\u73fe\u4e0a\u5f80\u5f80\u9060\u4f4e\u65bc\u9aa8\u5e79\u7db2\u7684\u80fd\u529b\u3002<\/li>\n<\/ol>\n<p>\n\u4e00\u65e6\u4f60\u4e0d\u518d\u628a\u300c\u8cc7\u6599\u4e2d\u5fc3\u908a\u7de3\u983b\u5bec\u6c92\u8dd1\u6eff\u300d\u7c21\u55ae\u7b49\u540c\u65bc\u300c\u80af\u5b9a\u6c92\u554f\u984c\u300d\uff0c\u5c31\u66f4\u5bb9\u6613\u628a\u5be6\u969b\u4e0b\u8f09\u8868\u73fe\u6620\u5c04\u5230\u5177\u9ad4\u74b0\u7bc0\uff0c\u5f9e\u800c\u9078\u64c7\u66f4\u73fe\u5be6\u7684\u512a\u5316\u7b56\u7565\uff0c\u800c\u4e0d\u662f\u5728\u932f\u8aa4\u7684\u5c64\u9762\u4e0a\u76f2\u76ee\u52a0\u5bb9\u91cf\u3002\n<\/p>\n<h2><strong>3. \u7f8e\u570b\u4f3a\u670d\u5668\u4e0a\u7684\u4f3a\u670d\u7aef\u7d04\u675f<\/strong><\/h2>\n<p>\n\u5c0d\u65bc\u5728\u7f8e\u570b\u6a5f\u623f\u505a\u4f3a\u670d\u5668\u79df\u7528\u6216\u4f3a\u670d\u5668\u8a17\u7ba1\u7684\u5718\u968a\u4f86\u8aaa\uff0c\u6392\u67e5\u61c9\u9996\u5148\u5f9e\u6700\u63a5\u8fd1\u300c\u63a8\u9001\u4f4d\u5143\u7d44\u300d\u7684\u884c\u7a0b\u958b\u59cb\u3002\u5373\u4f7f\u57e0\u53e3\u5728\u983b\u5bec\u5c64\u9762\u4e0a\u9084\u6709\u5f88\u5927\u5bcc\u9918\uff0c\u4e0a\u5c64\u7684\u9650\u5236\u6216\u4f3a\u670d\u5668\u672c\u8eab\u7522\u51fa\u8cc7\u6599\u7684\u80fd\u529b\u4e0d\u8db3\uff0c\u4e5f\u6703\u8b93\u9019\u4e9b\u770b\u4f3c\u300c\u53ef\u7528\u300d\u7684\u983b\u5bec\u5f62\u540c\u865b\u8a2d\u3002\n<\/p>\n<ul>\n<li>\n    <strong>CPU \u8207 I\/O \u4e0a\u9650<\/strong><br \/>\n    \u5982\u679c\u4f60\u7684\u696d\u52d9\u5f9e\u6a5f\u68b0\u786c\u789f\u4e2d\u4e32\u6d41\u8b80\u53d6\u5927\u7269\u4ef6\uff0c\u6bcf\u4e00\u6b21\u96a8\u6a5f\u5c0b\u9053\u548c\u65cb\u8f49\u5ef6\u9072\u90fd\u5728\u589e\u52a0\u7b49\u5f85\u6642\u9593\u3002\u5373\u4fbf\u4f7f\u7528 SSD\uff0c\u5728\u9ad8\u4f75\u767c\u4e0b\u4e5f\u53ef\u80fd\u6253\u6eff IOPS \u6216\u63a7\u5236\u5668\u4f47\u5217\u3002\u7576 CPU \u983b\u7e41\u5167\u5bb9\u5207\u63db\uff0c\u540c\u6642\u9084\u8981\u8ca0\u8cac\u52a0\u89e3\u5bc6\u548c\u696d\u52d9\u908f\u8f2f\u6642\uff0c\u50b3\u9001\u8def\u5f91\u7684\u5be6\u969b\u57f7\u884c\u5c31\u6703\u6bd4\u60f3\u50cf\u4e2d\u66f4\u300c\u5e8f\u5217\u5316\u300d\u3002\n  <\/li>\n<li>\n    <strong>\u6838\u5fc3\u8207\u901a\u8a0a\u7aef\u914d\u7f6e<\/strong><br \/>\n    \u6a94\u6848\u63cf\u8ff0\u5143\u4e0a\u9650\u3001backlog \u4f47\u5217\u4ee5\u53ca\u66ab\u6642\u6027\u57e0\u7bc4\u570d\u7b49\u9810\u8a2d\u503c\uff0c\u90fd\u53ef\u80fd\u6084\u6084\u5730\u300c\u6390\u6b7b\u300d\u4e00\u500b\u9ad8\u8ca0\u8f09\u7684\u4e0b\u8f09\u7bc0\u9ede\u3002\u904e\u5c0f\u7684 TCP \u50b3\u9001\u8207\u63a5\u6536\u7de9\u885d\u5340\uff0c\u6216\u8005\u6c92\u6709\u555f\u7528\u73fe\u4ee3\u58c5\u585e\u63a7\u5236\u6f14\u7b97\u6cd5\uff0c\u90fd\u6703\u8b93\u9577\u8ddd\u96e2\u93c8\u8def\u8b8a\u5f97\u6975\u70ba\u4f4e\u6548\u3002\n  <\/li>\n<li>\n    <strong>\u61c9\u7528\u5c64\u9650\u901f<\/strong><br \/>\n    \u8a31\u591a\u5e38\u7528\u6280\u8853\u68e7\u539f\u5ee0\u9810\u8a2d\u5c31\u5f88\u4fdd\u5b88\u3002Web \u4f3a\u670d\u5668\u901a\u5e38\u6703\u8a2d\u5b9a\u55ae\u9023\u7dda\u8207\u55ae IP \u7684\u901f\u7387\u4e0a\u9650\uff0c\u9632\u6b62\u300c\u5435\u9b27\u7684\u9130\u5c45\u300d\u3002\u53cd\u5411\u4ee3\u7406\u3001\u9650\u6d41\u904e\u6ffe\u5668\u3001\u9a57\u8b49\u9598\u9053\u7b49\uff0c\u4e5f\u53ef\u80fd\u5728\u5be6\u9ad4\u57e0\u53e3\u4e4b\u5916\u518d\u5957\u4e0a\u4e00\u5c64\u300c\u96b1\u5f62\u5929\u82b1\u677f\u300d\u3002\n  <\/li>\n<li>\n    <strong>\u55ae\u6a5f\u5bb9\u91cf vs. \u6a5f\u6ac3\uff0f\u6a5f\u67b6\u7e3d\u5bb9\u91cf<\/strong><br \/>\n    \u6a5f\u623f\u7684\u884c\u92b7\u6587\u6848\u5f80\u5f80\u5f37\u8abf\u7684\u662f\u6574\u500b\u6a5f\u623f\u6216\u6a5f\u67b6\u7684\u7e3d\u983b\u5bec\u80fd\u529b\u3002\u800c\u4f60\u5728\u5176\u4e2d\u7684\u4e00\u53f0\u4f3a\u670d\u5668\uff0c\u5be6\u969b\u53ef\u80fd\u88ab\u9650\u5236\u5728\u9060\u4f4e\u65bc\u5ba3\u50b3\u6578\u5b57\u7684\u627f\u8afe\u901f\u7387\u4e4b\u5167\uff0c\u9084\u8981\u8207\u6a5f\u6ac3\u5167\u7684\u5176\u4ed6\u6a5f\u5668\u5171\u4eab\u4e00\u689d\u88ab\u904e\u5ea6\u5f59\u805a\u7684 ToR \u4e0a\u884c\u3002\u53ea\u770b\u6a5f\u623f\u5ba3\u50b3\u5f88\u5bb9\u6613\u5ffd\u7565\u9019\u4e9b\u55ae\u57e0\u53e3\u3001\u55ae\u4f3a\u670d\u5668\u7684\u771f\u5be6\u4e0a\u9650\u3002\n  <\/li>\n<\/ul>\n<p>\n\u5f9e\u7cfb\u7d71\u7ba1\u7406\u54e1\u7684\u89d2\u5ea6\u4f86\u770b\uff0c\u300c\u51fa\u53e3\u983b\u5bec\u7a7a\u7a7a\u5982\u4e5f\u300d\u8207\u300c\u9019\u500b\u5e38\u99d0\u884c\u7a0b\u548c\u5b83\u7684\u6838\u5fc3\u914d\u7f6e\u628a\u6d41\u91cf\u52d2\u4f4f\u4e86\u8116\u5b50\u300d\u5b8c\u5168\u53ef\u4ee5\u540c\u6642\u6210\u7acb\u3002\u53ea\u6709\u628a CPU\u3001\u78c1\u789f\u4f47\u5217\u3001\u901a\u8a0a\u7aef\u7d71\u8a08\u8207\u908a\u7de3\u983b\u5bec\u5716\u4e00\u8d77\u76e3\u63a7\uff0c\u624d\u80fd\u5f97\u5230\u5b8c\u6574\u3001\u8aa0\u5be6\u7684\u8996\u5716\u3002\n<\/p>\n<h2><strong>4. \u9762\u5411\u7f8e\u570b\u4f3a\u670d\u5668\u7684\u8de8\u6d0b\u9577\u9014\u8def\u7531\u4e4b\u75db<\/strong><\/h2>\n<p>\n\u7576\u6d41\u91cf\u7684\u4f86\u6e90\u7aef\u8ddd\u96e2\u4f60\u7684\u7f8e\u570b\u6a5f\u623f\u5f88\u9060\u6642\uff0c\u7db2\u8def\u8def\u5f91\u672c\u8eab\u5c31\u6210\u4e86\u5de6\u53f3\u4f7f\u7528\u8005\u9ad4\u9a57\u7684\u4e3b\u89d2\u3002\u90a3\u4e9b\u8a66\u5716\u5f9e\u7f8e\u570b\u5340\u57df\u5411\u4e9e\u6d32\u3001\u6b50\u6d32\u6216\u975e\u6d32\u63d0\u4f9b\u670d\u52d9\u7684\u5718\u968a\uff0c\u5f80\u5f80\u6703\u767c\u73fe\uff0c\u771f\u6b63\u7684\u9650\u5236\u56e0\u7d20\u4e0d\u5728\u65bc\u983b\u5bec\uff0c\u800c\u5728\u65bc\u591a\u81ea\u6cbb\u7cfb\u7d71\u8def\u5f91\u4e0a\u7684\u5ef6\u9072\u548c\u54c1\u8cea\u3002\n<\/p>\n<ol>\n<li>\n    <strong>\u5149\u901f\u8207\u5730\u7406\u8ddd\u96e2<\/strong><br \/>\n    \u8de8\u6d0b\u5149\u7e9c\u5728\u7269\u7406\u4e0a\u70ba RTT \u8a2d\u5b9a\u4e86\u786c\u6027\u4e0b\u9650\u3002\u4e00\u6b21\u8de8\u8d8a\u6578\u5343\u516c\u91cc\u7684\u5f80\u8fd4\uff0c\u5fc5\u7136\u5f15\u5165\u6578\u5341\u751a\u81f3\u4e0a\u767e\u6beb\u79d2\u7684\u984d\u5916\u5ef6\u9072\u2014\u2014\u518d\u600e\u9ebc\u672c\u5730\u512a\u5316\u4e5f\u7121\u6cd5\u6d88\u9664\u3002\n  <\/li>\n<li>\n    <strong>\u4e92\u806f\u8207\u5c0d\u7b49\u54c1\u8cea<\/strong><br \/>\n    \u5373\u4fbf\u662f\u5927\u578b\u96fb\u4fe1\u5546\uff0c\u4e5f\u53ef\u80fd\u505a\u51fa\u4e26\u4e0d\u7406\u60f3\u7684\u8def\u7531\u6c7a\u7b56\u3002\u6d77\u5916 ISP \u8207\u4f60\u5728\u7f8e\u570b\u7684\u96fb\u4fe1\u5546\u4e4b\u9593\u7684\u6d41\u91cf\uff0c\u53ef\u80fd\u8981\u8f3e\u8f49\u591a\u500b\u4ea4\u63db\u9ede\uff0c\u5f15\u5165\u984d\u5916\u7684\u5ef6\u9072\u3001\u6392\u968a\u548c\u96f6\u661f\u5c01\u5305\u907a\u5931\uff0c\u5f9e\u800c\u5c0d\u58c5\u585e\u63a7\u5236\u9020\u6210\u6975\u5927\u5e72\u64fe\u3002\n  <\/li>\n<li>\n    <strong>\u6642\u9593\u7dad\u5ea6\u4e0a\u7684\u58c5\u585e<\/strong><br \/>\n    \u5728\u7576\u5730\u7684\u665a\u9ad8\u5cf0\u6642\u6bb5\uff0c\u5171\u4eab\u7684\u570b\u969b\u93c8\u8def\u66f4\u53ef\u80fd\u51fa\u73fe\u5fae\u7a81\u767c\u548c\u4f47\u5217\u7a4d\u58d3\u3002\u5f9e TCP \u6d41\u7684\u89d2\u5ea6\u770b\uff0c\u9019\u5c31\u50cf\u96f6\u661f\u5c01\u5305\u907a\u5931\u548c RTT \u7a81\u7136\u98c6\u5347\uff0c\u8feb\u4f7f\u90a3\u4e9b\u4fdd\u5b88\u8abf\u6821\u7684\u6f14\u7b97\u6cd5\u4e0d\u65b7\u300c\u8e29\u715e\u8eca\u300d\u3002\n  <\/li>\n<\/ol>\n<p>\n\u5f9e\u591a\u500b\u9060\u7aef\u89c0\u6e2c\u9ede\u9032\u884c\u8def\u7531\u8ffd\u8e64\uff0c\u4e26\u96a8\u6642\u9593\u8ffd\u8e64\u5ef6\u9072\u5206\u4f48\uff0c\u53ef\u4ee5\u89e3\u91cb\uff1a\u70ba\u4ec0\u9ebc\u5169\u4f4d\u6700\u5f8c\u4e00\u516c\u91cc\u983b\u5bec\u76f8\u4f3c\u7684\u4f7f\u7528\u8005\uff0c\u5728\u5b58\u53d6\u540c\u4e00\u500b\u7f8e\u570b\u7aef\u9ede\u6642\uff0c\u611f\u53d7\u5230\u7684\u4e0b\u8f09\u901f\u5ea6\u537b\u5929\u5dee\u5730\u5225\u3002\n<\/p>\n<h2><strong>5. TCP \u52d5\u614b\uff1a\u9ad8\u5ef6\u9072\u70ba\u4f55\u6703\u300c\u58d3\u57ae\u300d\u541e\u5410<\/strong><\/h2>\n<p>\n\u4e00\u65e6\u4f60\u96e2\u958b\u4f4e\u5ef6\u9072\u5340\u57df\u7db2\u7684\u8212\u9069\u5708\uff0c\u958b\u59cb\u8de8\u5927\u6d32\u50b3\u9001\u6d41\u91cf\uff0cTCP \u7684\u5404\u7a2e\u7d30\u7bc0\u5c31\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u9019\u500b\u5354\u5b9a\u7684\u8a2d\u8a08\u521d\u8877\u662f\u516c\u5e73\u5171\u4eab\u93c8\u8def\u5bb9\u91cf\u3001\u4fdd\u8b77\u58c5\u585e\u4e2d\u7684\u8def\u7531\u5668\uff0c\u800c\u4e0d\u662f\u5728\u4e00\u689d\u9577\u800c\u4e7e\u6de8\u7684\u93c8\u8def\u4e0a\uff0c\u8b93\u55ae\u4e00\u7528\u6236\u7aef\u77ac\u9593\u300c\u8dd1\u6eff\u983b\u5bec\u300d\u3002\n<\/p>\n<ul>\n<li>\n    <strong>\u6162\u555f\u52d5\u8207\u58c5\u585e\u907f\u514d<\/strong><br \/>\n    \u65b0\u9023\u7dda\u6703\u8b39\u614e\u5730\u958b\u59cb\uff0c\u9010\u6b65\u63a2\u6e2c\u8def\u5f91\u4e0a\u7684\u53ef\u7528\u901f\u7387\u3002\u5728\u8de8\u6d0b\u93c8\u8def\u4e0a\uff0c\u6bcf\u4e00\u6b21\u300c\u63a2\u6e2c\u2014\u78ba\u8a8d\u300d\u5faa\u74b0\u90fd\u6703\u6d88\u8017\u4e00\u500b\u5b8c\u6574\u7684 RTT\u3002\u5728 200&nbsp;ms \u7b49\u7d1a\u7684 RTT \u4e0b\uff0c\u58c5\u585e\u8996\u7a97\u53ef\u80fd\u9700\u8981\u5e7e\u79d2\u9418\u624d\u80fd\u6210\u9577\u5230\u8207\u7406\u8ad6\u983b\u5bec\u76f8\u5339\u914d\u7684\u91cf\u7d1a\u3002\n  <\/li>\n<li>\n    <strong>\u8996\u7a97\u5927\u5c0f\u8207\u983b\u5bec\u2013\u5ef6\u9072\u7a4d<\/strong><br \/>\n    \u8981\u586b\u6eff\u4e00\u689d\u300c\u53c8\u5feb\u53c8\u9060\u300d\u7684\u93c8\u8def\uff0c\u50b3\u9001\u7aef\u5fc5\u9808\u540c\u6642\u4fdd\u6301\u8db3\u5920\u591a\u7684\u672a\u78ba\u8a8d\u8cc7\u6599\u5728\u9014\uff0c\u4ee5\u5339\u914d\u983b\u5bec\u2013\u5ef6\u9072\u7a4d\u3002\u5982\u679c\u63a5\u6536\u8996\u7a97\u592a\u5c0f\uff0c\u6216\u8005\u50b3\u9001\u7aef\u81ea\u8eab\u9650\u5236\u592a\u4fdd\u5b88\uff0c\u5c31\u8a3b\u5b9a\u7121\u6cd5\u5145\u5206\u5229\u7528\u93c8\u8def\u80fd\u529b\uff0c\u4e0d\u7ba1\u4f60\u7684\u96fb\u4fe1\u5546\u8ce3\u7d66\u4e86\u4f60\u591a\u5927\u7684\u983b\u5bec\u3002\n  <\/li>\n<li>\n    <strong>\u5c01\u5305\u907a\u5931\u7684\u5f71\u97ff<\/strong><br \/>\n    \u6bcf\u4e00\u500b\u5c01\u5305\u907a\u5931\u90fd\u6703\u88ab\u8996\u70ba\u58c5\u585e\u8a0a\u865f\u3002\u50b3\u7d71\u6f14\u7b97\u6cd5\u5f80\u5f80\u6703\u975e\u5e38\u6fc0\u9032\u5730\u6536\u7e2e\u58c5\u585e\u8996\u7a97\u3002\u770b\u4f3c\u53ea\u6709 0.5% \u7684\u5c01\u5305\u907a\u5931\u7387\uff0c\u518d\u758a\u52a0\u8f03\u9ad8\u7684 RTT\uff0c\u5c31\u53ef\u4ee5\u628a\u53ef\u7528\u541e\u5410\u58d3\u7e2e\u5230\u93c8\u8def\u540d\u7fa9\u5bb9\u91cf\u7684\u4e00\u5c0f\u90e8\u5206\u3002\n  <\/li>\n<li>\n    <strong>\u52a0\u5bc6\u63e1\u624b\u8207\u984d\u5916\u5f80\u8fd4<\/strong><br \/>\n    TLS \u5354\u5b9a\u7684\u5354\u5546\u548c\u6191\u8b49\u9a57\u8b49\u9700\u8981\u984d\u5916\u7684\u5f80\u8fd4\u4e92\u52d5\u3002\u5728\u77ed\u8def\u5f91\u4e0a\uff0c\u9019\u7a2e\u958b\u92b7\u53ef\u4ee5\u5ffd\u7565\uff1b\u4f46\u5728\u6d32\u969b\u8def\u5f91\u4e0a\uff0c\u9019\u4e9b\u984d\u5916 RTT \u6703\u758a\u52a0\u5230\u9996\u5305\u5ef6\u9072\u4e0a\uff0c\u4e5f\u63a8\u9072\u4e86\u7a69\u5b9a\u614b\u541e\u5410\u300c\u8d77\u98db\u300d\u7684\u6642\u9593\u3002\n  <\/li>\n<\/ul>\n<p>\n\u73fe\u4ee3\u5354\u5b9a\u68e7\u63a1\u7528\u66f4\u5927\u7684\u8996\u7a97\u3001SACK\uff08\u9078\u64c7\u6027\u78ba\u8a8d\uff09\u548c\u66f4\u5148\u9032\u7684\u58c5\u585e\u63a7\u5236\u6f14\u7b97\u6cd5\uff0c\u8868\u73fe\u78ba\u5be6\u6bd4\u50b3\u7d71\u9810\u8a2d\u503c\u597d\u5f97\u591a\uff0c\u4f46\u4e5f\u6539\u8b8a\u4e0d\u4e86\u7269\u7406\u6975\u9650\u3002\u7576 RTT \u8207\u5c01\u5305\u907a\u5931\u63a5\u8fd1\u73fe\u5be6\u7db2\u8def\u4e2d\u90a3\u4e9b\u300c\u6b98\u9177\u300d\u7684\u6578\u503c\u6642\uff0c\u7406\u8ad6\u983b\u5bec\u8207\u5be6\u969b\u53ef\u7528\u983b\u5bec\u4e4b\u9593\u7684\u5dee\u8ddd\u5c31\u6703\u8b8a\u5f97\u89f8\u76ee\u9a5a\u5fc3\u3002\n<\/p>\n<h2><strong>6. \u4f75\u767c\u6578\u3001HTTP \u7248\u672c\u8207\u4e0b\u8f09\u6a21\u5f0f<\/strong><\/h2>\n<p>\n\u5373\u4f7f\u5728 TCP \u53c3\u6578\u5df2\u7d93\u8f03\u70ba\u5408\u7406\u7684\u60c5\u6cc1\u4e0b\uff0c\u61c9\u7528\u5982\u4f55\u7ba1\u7406\u9023\u7dda\uff0c\u540c\u6a23\u6703\u6df1\u523b\u5f71\u97ff\u4f7f\u7528\u8005\u9ad4\u9a57\u3002\u5169\u500b\u7528\u6236\u7aef\u5373\u4fbf\u4e0b\u8f09\u76f8\u540c\u7684\u5167\u5bb9\uff0c\u6240\u7372\u5f97\u7684\u901f\u5ea6\u4e5f\u6703\u56e0\u70ba\u958b\u555f\u7684\u4e32\u6d41\u6578\u91cf\u4e0d\u540c\u3001\u6240\u7528 HTTP \u7248\u672c\u4e0d\u540c\u800c\u5927\u76f8\u9015\u5ead\u3002\n<\/p>\n<ol>\n<li>\n    <strong>\u55ae\u4e32\u6d41\u4e0b\u8f09 vs. \u591a\u4e32\u6d41\u4e0b\u8f09<\/strong><br \/>\n    \u55ae\u4e00 TCP \u4e32\u6d41\u5728\u9577\u8ddd\u96e2\u93c8\u8def\u4e0a\uff0c\u5f88\u96e3\u5feb\u901f\u586b\u6eff\u53ef\u7528\u983b\u5bec\u3002\u628a\u4e00\u500b\u5927\u578b\u6a94\u6848\u62c6\u5206\u70ba\u591a\u500b\u7247\u6bb5\u4e26\u5e73\u884c\u62c9\u53d6\uff0c\u53ef\u4ee5\u5206\u6563\u98a8\u96aa\uff1a\u5373\u4fbf\u5176\u4e2d\u4e00\u689d\u4e32\u6d41\u56e0\u5c01\u5305\u907a\u5931\u88ab\u300c\u8e29\u715e\u8eca\u300d\uff0c\u5176\u4ed6\u4e32\u6d41\u4ecd\u53ef\u4fdd\u6301\u8f03\u9ad8\u901f\u5ea6\uff0c\u5f9e\u800c\u5728\u7e3d\u9ad4\u4e0a\u6524\u5e73\u640d\u5931\u3002\n  <\/li>\n<li>\n    <strong>HTTP\/1.1 \u7684\u9650\u5236<\/strong><br \/>\n    \u9023\u7dda\u8907\u7528\u80fd\u529b\u6709\u9650\uff0c\u7528\u6236\u7aef\u5f80\u5f80\u6703\u5728\u5c11\u91cf\u6301\u4e45\u9023\u7dda\u4e0a\u5e8f\u5217\u5316\u95dc\u9375\u8acb\u6c42\u3002\u61c9\u7528\u5c64\u7684\u968a\u982d\u963b\u585e\uff0c\u6703\u8b93\u6574\u9ad4\u541e\u5410\u770b\u8d77\u4f86\u9060\u9060\u4f4e\u65bc\u50b3\u8f38\u5c64\u672c\u8eab\u53ef\u4ee5\u9054\u5230\u7684\u6c34\u6e96\u3002\n  <\/li>\n<li>\n    <strong>HTTP\/2 \u8207 HTTP\/3 \u7684\u512a\u52e2<\/strong><br \/>\n    \u9019\u4e9b\u5354\u5b9a\u5f15\u5165\u4e86\u591a\u8def\u8907\u7528\u3001\u6a19\u982d\u58d3\u7e2e\uff0c\u800c HTTP\/3 \u900f\u904e QUIC\uff08\u57fa\u65bc UDP\uff09\u64c1\u6709\u4e00\u5957\u65b0\u7684\u5c01\u5305\u907a\u5931\u56de\u5fa9\u6a5f\u5236\u3002\u5728\u5c01\u5305\u7a81\u767c\u907a\u5931\u983b\u7e41\u7684\u771f\u5be6\u7db2\u8def\u4e2d\uff0c\u5b83\u5011\u5f80\u5f80\u80fd\u7dad\u6301\u66f4\u9ad8\u7684\u6709\u6548\u541e\u5410\u548c\u66f4\u597d\u7684\u4f75\u884c\u5ea6\uff0c\u76f8\u6bd4\u7d14\u7cb9\u7684 HTTP\/1.1 \u9ad4\u9a57\u66f4\u4f73\u3002\n  <\/li>\n<li>\n    <strong>\u5c0d\u55ae\u7528\u6236\u7aef\u7684\u9023\u7dda\u6578\u9650\u5236<\/strong><br \/>\n    \u70ba\u9632\u6b62\u6feb\u7528\uff0c\u71df\u904b\u65b9\u901a\u5e38\u6703\u5c0d\u55ae IP \u7684\u9023\u7dda\u6578\u8a2d\u5b9a\u8f03\u5c0f\u7684\u4e0a\u9650\uff0c\u6216\u8005\u6309 ASN \u5be6\u65bd\u516c\u5e73\u5171\u4eab\u7b56\u7565\u3002\u5c0d\u591a\u79df\u6236\u74b0\u5883\u4f86\u8aaa\uff0c\u9019\u662f\u5065\u5eb7\u7684\u4f5c\u6cd5\uff0c\u4f46\u4e5f\u6703\u9650\u5236\u55ae\u500b\u4e0b\u8f09\u5de5\u5177\u5728\u9ad8\u5ef6\u9072\u74b0\u5883\u4e0b\u53ef\u4ee5\u767c\u63ee\u7684\u6975\u9650\u3002\n  <\/li>\n<\/ol>\n<p>\n\u6392\u67e5\u300c\u4e0b\u8f09\u5f88\u6162\u300d\u6642\uff0c\u5982\u679c\u53ea\u770b\u55ae\u4f4d\u6642\u9593\u5167\u7684\u7e3d\u4f4d\u5143\u7d44\u6578\uff0c\u5f88\u5bb9\u6613\u5ffd\u7565\u9019\u4e9b\u7d50\u69cb\u6027\u554f\u984c\u3002\u53ea\u6709\u900f\u904e\u5c01\u5305\u64f7\u53d6\u548c\u7d30\u7dfb\u7684\u9023\u7dda\u65e5\u8a8c\uff0c\u4f60\u624d\u80fd\u770b\u5230\u8af8\u5982\u300c\u5e8f\u5217\u5316\u50b3\u8f38\u300d\u300c\u591a\u8def\u8907\u7528\u6c92\u6709\u771f\u6b63\u7528\u8d77\u4f86\u300d\u7b49\u6a21\u5f0f\uff0c\u800c\u9019\u4e9b\u5728\u7c21\u55ae\u7684\u983b\u5bec\u5716\u4e2d\u662f\u5b8c\u5168\u4e0d\u53ef\u898b\u7684\u3002\n<\/p>\n<h2><strong>7. \u570d\u7e5e\u7f8e\u570b\u6e90\u7ad9\u7684 CDN \u7b56\u7565\u8207\u908a\u7de3\u5e03\u5c40<\/strong><\/h2>\n<p>\n\u5982\u679c\u4f60\u8b93\u6240\u6709\u7528\u6236\u7aef\u5de5\u4f5c\u968e\u6bb5\u90fd\u76f4\u63a5\u6253\u5230\u7f8e\u570b\u6e90\u7ad9\uff0c\u672c\u8cea\u4e0a\u5c31\u662f\u6307\u671b\u958b\u653e\u7db2\u969b\u7db2\u8def\u80fd\u8868\u73fe\u5f97\u50cf\u4e00\u689d\u4e7e\u6de8\u7684\u79c1\u6709\u9aa8\u5e79\u7db2\u2014\u2014\u800c\u4e8b\u5be6\u986f\u7136\u4e0d\u6703\u5982\u6b64\u3002\u5167\u5bb9\u50b3\u905e\u7db2\u8def\uff08CDN\uff09\u8207\u908a\u7de3\u5feb\u53d6\u7684\u5b58\u5728\u610f\u7fa9\uff0c\u5c31\u662f\u628a TCP \u63e1\u624b\u7d42\u6b62\u5728\u66f4\u9760\u8fd1\u4f7f\u7528\u8005\u7684\u4f4d\u7f6e\uff0c\u628a\u90a3\u4e9b\u9577\u9014\u8def\u7531\u4e2d\u7684\u300c\u919c\u964b\u7d30\u7bc0\u300d\u96b1\u85cf\u5728\u61c9\u7528\u8eab\u5f8c\u3002\n<\/p>\n<ul>\n<li>\n    <strong>\u7e2e\u77ed\u8ddd\u96e2\u8207 RTT<\/strong><br \/>\n    \u628a\u908a\u7de3\u7bc0\u9ede\uff08POP\uff09\u90e8\u7f72\u5728\u9760\u8fd1\u4f7f\u7528\u8005\u7684\u5730\u65b9\uff0c\u80fd\u628a\u539f\u672c\u6578\u767e\u6beb\u79d2\u7684 RTT \u58d3\u7e2e\u5230\u6578\u5341\u6beb\u79d2\u3002\u4e00\u65e6 RTT \u964d\u4e0b\u4f86\uff0c\u58c5\u585e\u63a7\u5236\u5c31\u80fd\u66f4\u5feb\u9032\u5165\u7a69\u5b9a\u72c0\u614b\uff0c\u4e0b\u8f09\u5728\u9810\u71b1\u4e4b\u5f8c\u5f80\u5f80\u53ef\u4ee5\u6536\u6582\u5230\u66f4\u9ad8\u7684\u7a69\u614b\u541e\u5410\u3002\n  <\/li>\n<li>\n    <strong>\u4fdd\u8b77\u6e90\u7ad9\u8207\u56de\u6e90\u5c08\u7dda<\/strong><br \/>\n    \u8207\u5176\u8b93\u4f60\u7684\u6e90\u7ad9\u76f4\u63a5\u66b4\u9732\u5728\u6574\u500b\u7db2\u969b\u7db2\u8def\u9762\u524d\uff0c\u4e0d\u5982\u628a\u9023\u7dda\u96c6\u4e2d\u5230\u6709\u9650\u6578\u91cf\u3001\u54c1\u8cea\u66f4\u53ef\u63a7\u7684\u908a\u7de3\u7bc0\u9ede\u4e0a\uff0c\u518d\u900f\u904e\u76f8\u5c0d\u4e7e\u6de8\u7684\u8def\u5f91\u56de\u6e90\u3002\u9019\u6a23\u4e00\u4f86\uff0c\u4f60\u7684\u4f3a\u670d\u5668\u79df\u7528\u6216\u4f3a\u670d\u5668\u8a17\u7ba1\u57e0\u53e3\u914d\u7f6e\u53ef\u4ee5\u4fdd\u6301\u76f8\u5c0d\u300c\u6a38\u7d20\u300d\uff0c\u537b\u4f9d\u7136\u63d0\u4f9b\u51fa\u8272\u7684\u4f7f\u7528\u8005\u9ad4\u9a57\u3002\n  <\/li>\n<li>\n    <strong>\u5feb\u53d6\u7b56\u7565\u8207\u7269\u4ef6\u5927\u5c0f<\/strong><br \/>\n    \u908a\u7de3\u5132\u5b58\u4e26\u975e\u7121\u9650\u3002\u5982\u679c\u5feb\u53d6\u6642\u9593\u904e\u77ed\uff0c\u6216\u70ba\u4e86\u898f\u907f\u98a8\u96aa\u800c\u523b\u610f\u5c0d\u5927\u6a94\u6848\u7e5e\u904e\u5feb\u53d6\uff0c\u90a3\u9ebc\u6e90\u7ad9\u4ecd\u7136\u6703\u9762\u5c0d\u5927\u91cf\u9577\u9014\u56de\u6e90\u8acb\u6c42\u3002\u5c0d\u4f7f\u7528\u8005\u800c\u8a00\uff0c\u9019\u6703\u5927\u5927\u524a\u5f31\u50b3\u905e\u5c64\u672c\u61c9\u5e36\u4f86\u7684\u52a0\u901f\u6548\u679c\u3002\n  <\/li>\n<li>\n    <strong>\u5730\u7406\u8986\u84cb\u7a7a\u767d<\/strong><br \/>\n    \u53ea\u5728\u7f8e\u570b\u548c\u6b50\u6d32\u555f\u7528 CDN \u7bc0\u9ede\uff0c\u5f80\u5f80\u6703\u8b93\u5176\u4ed6\u5730\u5340\u7684\u4f7f\u7528\u8005\u8655\u65bc\u300c\u5be6\u969b\u4e0a\u7b49\u65bc\u6c92\u5feb\u53d6\u300d\u7684\u72c0\u614b\uff0c\u6bcf\u6b21\u5b58\u53d6\u90fd\u8981\u8de8\u534a\u500b\u5730\u7403\u3002\u8981\u60f3\u9a57\u8b49\u908a\u7de3\u90e8\u7f72\u662f\u5426\u5339\u914d\u4f60\u7684\u4f7f\u7528\u8005\u5206\u4f48\uff0c\u5c31\u5fc5\u9808\u4f9d\u9760\u8986\u84cb\u5730\u5716\u548c\u6309\u5340\u57df\u5283\u5206\u7684\u6548\u80fd\u770b\u677f\u3002\n  <\/li>\n<\/ul>\n<p>\n\u5f9e\u7d14\u7cb9\u7684\u57e0\u53e3\u76e3\u63a7\u89d2\u5ea6\u770b\uff0c\u4f60\u5728\u7f8e\u570b\u7684\u6e90\u7ad9\u53ef\u80fd\u986f\u5f97\u300c\u5229\u7528\u7387\u4e0d\u8db3\u300d\uff0c\u56e0\u70ba\u5927\u90e8\u5206\u9ad8\u5cf0\u6d41\u91cf\u5df2\u88ab CDN \u5438\u6536\u3002\u9019\u4e26\u4e0d\u662f\u6d6a\u8cbb\uff0c\u800c\u662f\u6210\u529f\u2014\u2014\u4f4d\u5143\u7d44\u5df2\u7d93\u5728\u66f4\u9760\u8fd1\u4f7f\u7528\u8005\u7684\u5730\u65b9\u88ab\u9001\u9054\uff0c\u800c\u4e0d\u518d\u88ab\u5f37\u884c\u64e0\u904e\u67d0\u4e00\u500b\u770b\u5f97\u898b\u7684\u55ae\u9ede\u300c\u71b1\u9ede\u300d\u3002\n<\/p>\n<h2><strong>8. \u7528\u6236\u7aef\u9650\u5236\u8207\u672c\u5730\u63a5\u5165\u7db2\u8def<\/strong><\/h2>\n<p>\n\u4e26\u4e0d\u662f\u6240\u6709\u4e0b\u8f09\u7de9\u6162\u7684\u554f\u984c\u90fd\u80fd\u6b78\u548e\u65bc\u4f60\u5728\u7f8e\u570b\u7684\u57fa\u790e\u8a2d\u65bd\u3002\u4e00\u65e6\u6d41\u91cf\u96e2\u958b\u4f60\u7684\u908a\u7de3\u7bc0\u9ede\uff0c\u5b83\u9084\u8981\u7a7f\u8d8a\u672c\u5730\u63a5\u5165\u7db2\u8def\u3001\u5bb6\u5ead\u8def\u7531\u5668\u548c\u7121\u7dda\u93c8\u8def\uff0c\u800c\u9019\u4e9b\u74b0\u7bc0\u5f80\u5f80\u7121\u6cd5\u771f\u6b63\u514c\u73fe\u6700\u5f8c\u4e00\u516c\u91cc\u4f9b\u61c9\u5546\u6240\u5ba3\u50b3\u7684\u300c\u7406\u60f3\u983b\u5bec\u300d\u3002\n<\/p>\n<ol>\n<li>\n    <strong>\u5bb6\u5ead\u5bec\u983b\u7684\u73fe\u5be6\u4e0a\u9650<\/strong><br \/>\n    \u5f88\u591a\u4f7f\u7528\u8005\u4f7f\u7528\u7684\u662f\u4e2d\u4f4e\u901f\u7684\u5171\u4eab\u7dda\u8def\u3002\u5373\u4fbf\u4ed6\u5011\u7684\u8def\u7531\u5668\u4ecb\u9762\u986f\u793a\u7684\u662f\u6578\u767e Mb\/s\uff0c\u6574\u5f62\u7b56\u7565\u3001\u904e\u5ea6\u5171\u4eab\u4ee5\u53ca\u5bb6\u5ead\u5167\u90e8\u7af6\u722d\uff08\u591a\u88dd\u7f6e\u540c\u6642\u4f7f\u7528\uff09\u90fd\u53ef\u80fd\u628a\u7a69\u5b9a\u53ef\u7528\u7684\u541e\u5410\u58d3\u5230\u6a19\u7a31\u503c\u7684\u4e00\u5c0f\u90e8\u5206\u3002\n  <\/li>\n<li>\n    <strong>Wi\u2011Fi \u93c8\u8def\u901f\u7387\u795e\u8a71 vs. \u771f\u5be6\u541e\u5410<\/strong><br \/>\n    \u73fe\u4ee3\u7121\u7dda\u88dd\u7f6e\u4e0a\u986f\u793a\u7684\u9ad8\u93c8\u8def\u901f\u7387\uff0c\u4e26\u4e0d\u7b49\u65bc TCP \u5c64\u7684\u6de8\u541e\u5410\u3002\u5e72\u64fe\u3001\u91cd\u50b3\u4ee5\u53ca\u534a\u96d9\u5de5\u7684\u7a7a\u4e2d\u4ecb\u9762\u5171\u4eab\uff0c\u90fd\u6703\u5927\u5e45\u300c\u5403\u6389\u300d\u770b\u4f3c\u53ef\u89c0\u7684\u5bb9\u91cf\u3002\u6240\u6709\u4e0b\u8f09\u90fd\u8981\u8207\u5bb6\u88e1\u5176\u4ed6\u88dd\u7f6e\u4e00\u8d77\u300c\u5435\u8457\u6436\u300d\u540c\u4e00\u6bb5\u983b\u8b5c\u3002\n  <\/li>\n<li>\n    <strong>\u672c\u5730\u58c5\u585e\u8207\u6392\u968a<\/strong><br \/>\n    \u4fbf\u5b9c\u7684\u5bb6\u5ead\u8def\u7531\u5668\u901a\u5e38\u53ea\u6709\u5f88\u6dfa\u7684\u7de9\u885d\u5340\u548c\u8106\u5f31\u7684\u4f47\u5217\u7b56\u7565\u3002\u4e00\u500b\u6b63\u5728\u57f7\u884c\u7684\u96f2\u5099\u4efd\u4efb\u52d9\u5c31\u80fd\u8f15\u9b06\u6253\u6eff\u4e0a\u884c\uff0c\u8b93 RTT \u56e0\u7de9\u885d\u81a8\u8139\uff08bufferbloat\uff09\u800c\u98c6\u5347\uff0c\u4e26\u9806\u5e36\u628a\u4e0b\u884c\u4e0b\u8f09\u901f\u5ea6\u300c\u62d6\u6b7b\u300d\u3002\n  <\/li>\n<li>\n    <strong>\u7d42\u7aef\u7b97\u529b\u8207\u8cc7\u6e90\u7d04\u675f<\/strong><br \/>\n    \u7576\u700f\u89bd\u5668\u5728\u4e00\u53f0\u88ab\u56b4\u91cd\u964d\u983b\u7684\u7b46\u96fb\u6216\u6548\u80fd\u5b71\u5f31\u7684\u624b\u6a5f\u4e0a\u4e0b\u8f09\u6642\uff0c\u6fc0\u70c8\u7684\u78c1\u789f\u5beb\u5165\u6216\u6821\u9a57\u8a08\u7b97\u540c\u6a23\u6703\u5c0e\u81f4\u5361\u9813\u3002\u5728\u76e3\u63a7\u7cfb\u7d71\u773c\u4e2d\uff0c\u9019\u770b\u4e0a\u53bb\u50cf\u4e00\u500b\u7db2\u8def\u554f\u984c\uff0c\u5be6\u969b\u4e0a\u74f6\u9838\u537b\u5728\u7528\u6236\u7aef\u672c\u6a5f\u3002\n  <\/li>\n<\/ol>\n<p>\n\u7dad\u904b\u5718\u968a\u5fc5\u9808\u5408\u7406\u6821\u6e96\u9810\u671f\uff1a\u4f60\u80fd\u6539\u5584\u7684\u300c\u6700\u5f8c\u4e00\u516c\u91cc\u300d\u662f\u6709\u9650\u7684\u3002\u4e0d\u904e\uff0c\u900f\u904e\u6e05\u6670\u7684\u89c0\u6e2c\u548c\u7528\u6236\u7aef\u8a3a\u65b7\uff0c\u81f3\u5c11\u53ef\u4ee5\u5206\u5f97\u6e05\u300c\u6211\u5011\u7684\u908a\u7de3\u771f\u7684\u58de\u4e86\u300d\u8207\u300c\u4f7f\u7528\u8005\u6240\u5728\u7684\u662f\u4e00\u500b\u64c1\u64e0\u4e14\u8106\u5f31\u7684\u5bb6\u5ead\u7db2\u8def\u300d\u3002\n<\/p>\n<h2><strong>9. \u627e\u51fa\u771f\u5be6\u74f6\u9838\u7684\u5be6\u6230\u6280\u5de7<\/strong><\/h2>\n<p>\n\u7531\u65bc\u4e0b\u8f09\u8def\u5f91\u6a6b\u8de8\u773e\u591a\u9818\u57df\u2014\u2014\u6838\u5fc3\u3001\u61c9\u7528\u3001\u96fb\u4fe1\u5546\u50b3\u8f38\u3001\u6700\u5f8c\u4e00\u516c\u91cc\u2014\u2014\u4f60\u9700\u8981\u4e00\u5957\u6709\u7d00\u5f8b\u7684\u6d41\u7a0b\u4f86\u5224\u65b7\u5230\u5e95\u8a72\u628a\u7cbe\u529b\u6295\u5165\u54ea\u88e1\u3002\u6c92\u6709\u53ef\u898b\u6027\u7684\u76f2\u76ee\u8abf\u6821\uff0c\u53ea\u6703\u8b93\u5de5\u7a0b\u5e2b\u75b2\u65bc\u5954\u547d\uff0c\u800c\u4f7f\u7528\u8005\u4f9d\u7136\u770b\u5230\u6642\u5feb\u6642\u6162\u7684\u4e0b\u8f09\u3002\n<\/p>\n<ul>\n<li>\n    <strong>\u5c0d\u6bd4\u591a\u500b\u89c0\u6e2c\u9ede<\/strong><br \/>\n    \u5f9e\u4e0d\u540c\u7db2\u8def\u767c\u8d77\u7684\u5408\u6210\u63a2\u6e2c\u53ef\u4ee5\u63d0\u4f9b\u65e9\u671f\u7dda\u7d22\u3002\u5982\u679c\u67d0\u4e9b\u5340\u57df\u59cb\u7d42\u80fd\u8dd1\u51fa\u9ad8\u901f\u5ea6\uff0c\u800c\u53e6\u4e00\u4e9b\u5340\u57df\u6c38\u9060\u8dd1\u4e0d\u8d77\u4f86\uff0c\u90a3\u9ebc\u74f6\u9838\u5f88\u53ef\u80fd\u4e0d\u5728\u4f60\u7684\u8cc7\u6599\u4e2d\u5fc3\u3002\u76f8\u53cd\uff0c\u5982\u679c\u9760\u8fd1\u6e90\u7ad9\u7684\u63a2\u91dd\u8868\u73fe\u90fd\u5f88\u5dee\uff0c\u5c31\u8981\u512a\u5148\u61f7\u7591\u672c\u5730\u4f3a\u670d\u5668\u5074\u7684\u9650\u5236\u3002\n  <\/li>\n<li>\n    <strong>\u505a\u8def\u7531\u8ffd\u8e64\u8207 RTT \u5f71\u50cf<\/strong><br \/>\n    \u4e00\u8df3\u4e00\u8df3\u5730\u8ffd\u8e64\u8def\u7531\u53ef\u4ee5\u63ed\u9732\u4e00\u4e9b\u53cd\u5e38\u7e5e\u8def\u548c\u53ef\u7591\u7684\u5ef6\u9072\u9661\u589e\u3002\u5982\u679c\u5728\u67d0\u4e9b\u4ea4\u63db\u9ede\u4e0a\u9577\u671f\u770b\u5230\u7570\u5e38\uff0c\u90a3\u901a\u5e38\u5c31\u5c0d\u61c9\u8457\u8def\u7531\u7b56\u7565\u554f\u984c\u6216\u96fb\u4fe1\u5546\u4e4b\u9593\u5c0d\u7b49\u57e0\u7684\u58c5\u585e\u3002\n  <\/li>\n<li>\n    <strong>\u5206\u6790\u6d41\u91cf\u8207\u8996\u7a97\u5927\u5c0f<\/strong><br \/>\n    \u5728\u4f3a\u670d\u5668\u5074\u64f7\u53d6\u5c01\u5305\uff0c\u89c0\u5bdf\u58c5\u585e\u8996\u7a97\u7684\u8b8a\u5316\u3001\u91cd\u50b3\u60c5\u6cc1\u4ee5\u53ca\u7528\u6236\u7aef\u7684\u901a\u544a\u8996\u7a97\u5927\u5c0f\uff0c\u4f60\u5c31\u80fd\u5224\u65b7 TCP \u4e3b\u8981\u662f\u88ab\u5c01\u5305\u907a\u5931\u9650\u5236\u3001\u88ab\u4fdd\u5b88\u914d\u7f6e\u675f\u7e1b\uff0c\u9084\u662f\u88ab\u7528\u6236\u7aef\u904e\u5c0f\u7684\u7de9\u885d\u5340\u62d6\u5f8c\u817f\u3002\n  <\/li>\n<li>\n    <strong>\u5c07\u7cfb\u7d71\u6307\u6a19\u8207\u4f7f\u7528\u8005\u5c64\u9762\u7684\u5361\u9813\u95dc\u806f\u8d77\u4f86<\/strong><br \/>\n    \u4f7f\u7528\u8005\u6295\u8a34\u6216\u5408\u6210\u6e2c\u8a66\u7684\u6642\u9593\u6233\uff0c\u61c9\u7576\u8207\u4e3b\u6a5f\u7d1a\u6307\u6a19\u9032\u884c\u5c0d\u9f4a\u3002\u5982\u679c\u6bcf\u4e00\u6b21\u541e\u5410\u300c\u5d29\u76e4\u300d\u7684\u6642\u9593\u9ede\uff0c\u90fd\u6070\u597d\u5c0d\u61c9\u6e90\u7ad9 CPU \u98c6\u5347\u6216\u78c1\u789f\u4f47\u5217\u6253\u6eff\uff0c\u90a3\u9ebc\u518d\u591a\u7684\u5916\u90e8\u8abf\u6821\u4e5f\u7121\u6fdf\u65bc\u4e8b\u2014\u2014\u554f\u984c\u6839\u672c\u9084\u6c92\u8d70\u51fa\u6a5f\u5668\u672c\u8eab\u3002\n  <\/li>\n<\/ul>\n<p>\n\u4e00\u5957\u53ef\u91cd\u73fe\u7684\u6e2c\u8a66\u77e9\u9663\u548c\u5171\u4eab\u7684\u53ef\u8996\u5316\u770b\u677f\uff0c\u80fd\u907f\u514d\u5718\u968a\u300c\u6191\u611f\u89ba\u300d\u64cd\u4f5c\u3002\u4e00\u65e6\u77e5\u9053\u74f6\u9838\u7a76\u7adf\u662f\u6838\u5fc3\u914d\u7f6e\u3001\u6e90\u7ad9\u98fd\u548c\u3001\u9577\u9014\u93c8\u8def\u554f\u984c\u3001\u908a\u7de3\u914d\u7f6e\u932f\u8aa4\uff0c\u9084\u662f\u6700\u5f8c\u4e00\u516c\u91cc\u58c5\u585e\uff0c\u4f60\u5c31\u80fd\u9078\u64c7\u771f\u6b63\u6709\u7522\u51fa\u7684\u6539\u9032\u63aa\u65bd\u3002\n<\/p>\n<h2><strong>10. \u9762\u5411\u7f8e\u570b\u8a17\u7ba1\u4e0b\u8f09\u5834\u666f\u7684\u512a\u5316\u624b\u518a<\/strong><\/h2>\n<p>\n\u5728\u627e\u5230\u8584\u5f31\u74b0\u7bc0\u4e4b\u5f8c\uff0c\u4f60\u53ef\u4ee5\u5faa\u5e8f\u6f38\u9032\u5730\u628a\u73fe\u5be6\u4e16\u754c\u4e2d\u7684\u4e0b\u8f09\u541e\u5410\u63a8\u9032\u5230\u66f4\u8cbc\u8fd1\u7406\u8ad6\u4e0a\u9650\u7684\u6c34\u6e96\uff0c\u800c\u4e0d\u662f\u76f2\u76ee\u5730\u7838\u9322\u52a0\u983b\u5bec\u3002\u5c0d\u65bc\u5728\u7f8e\u570b\u958b\u5c55\u56b4\u8085\u696d\u52d9\u7684\u71df\u904b\u8005\u800c\u8a00\uff0c\u9019\u901a\u5e38\u662f\u4e00\u9805\u6301\u7e8c\u6f14\u9032\u7684\u5de5\u7a0b\u5be6\u8e10\uff0c\u800c\u7d55\u975e\u4e00\u6b21\u6027\u8abf\u53c3\u3002\n<\/p>\n<ol>\n<li>\n    <strong>\u8abf\u6821\u50b3\u8f38\u5c64\u8207\u6838\u5fc3\u53c3\u6578<\/strong><br \/>\n    \u555f\u7528\u73fe\u4ee3\u58c5\u585e\u63a7\u5236\u3001\u5728\u5408\u9069\u5834\u666f\u4e0b\u589e\u5927\u7de9\u885d\u5340\u3001\u4e26\u8b93\u901a\u8a0a\u7aef\u9078\u9805\u8207\u983b\u5bec\u2013\u5ef6\u9072\u7a4d\u7684\u8a08\u7b97\u7d50\u679c\u5c0d\u9f4a\uff0c\u90fd\u53ef\u4ee5\u986f\u8457\u6539\u5584\u9577\u8ddd\u96e2\u93c8\u8def\u7684\u300c\u586b\u5145\u6548\u7387\u300d\u3002\u5b9a\u671f\u5be9\u67e5\u9019\u4e9b\u914d\u7f6e\uff0c\u78ba\u4fdd\u5b83\u5011\u80fd\u8ddf\u4e0a\u6d41\u91cf\u578b\u614b\u7684\u6f14\u5316\u3002\n  <\/li>\n<li>\n    <strong>\u5347\u7d1a\u5132\u5b58\u8207 I\/O \u8def\u5f91<\/strong><br \/>\n    \u628a\u9ad8\u983b\u5b58\u53d6\u7684\u7269\u4ef6\u5f9e\u6a5f\u68b0\u786c\u789f\u79fb\u8f49\u5230 SSD \u6216 NVMe \u5c64\uff0c\u53ef\u4ee5\u9632\u6b62\u5132\u5b58\u5b50\u7cfb\u7d71\u6210\u70ba\u4e0b\u8f09\u74f6\u9838\u3002\u5408\u7406\u7684\u6a94\u6848\u4f48\u5c40\u8207\u9810\u71b1\u7b56\u7565\u5247\u6709\u52a9\u65bc\u5728\u6d41\u91cf\u5cf0\u503c\u671f\u9593\u907f\u514d\u300c\u51b7\u8b80\u61f2\u7f70\u300d\u3002\n  <\/li>\n<li>\n    <strong>\u90e8\u7f72\u6216\u64f4\u5c55 CDN \u8986\u84cb<\/strong><br \/>\n    \u628a\u66f4\u591a\u6d41\u91cf\u8f49\u79fb\u5230\u9760\u8fd1\u4f7f\u7528\u8005\u7684\u908a\u7de3\u5feb\u53d6\u4e0a\uff0c\u53ef\u4ee5\u628a\u5927\u90e8\u5206\u5ef6\u9072\u8207\u5c01\u5305\u907a\u5931\u5c01\u88dd\u5728\u79c1\u6709\u9aa8\u5e79\u5167\u90e8\uff0c\u800c\u4e0d\u662f\u66b4\u9732\u5728\u516c\u7db2\u4e4b\u4e0a\u3002\u5408\u7406\u8a2d\u8a08\u5feb\u53d6\u9375\u548c TTL \u7b56\u7565\uff0c\u6709\u52a9\u65bc\u7dad\u6301\u9ad8\u547d\u4e2d\u7387\uff0c\u907f\u514d\u7d66\u7f8e\u570b\u6e90\u7ad9\u88fd\u9020\u4e0d\u5fc5\u8981\u7684\u9577\u9014\u56de\u6e90\u8ca0\u8f09\u3002\n  <\/li>\n<li>\n    <strong>\u5145\u5206\u5229\u7528\u73fe\u4ee3 HTTP \u7248\u672c\u8207\u4f75\u767c\u7b56\u7565<\/strong><br \/>\n    \u652f\u63f4 HTTP\/2 \u548c HTTP\/3\uff0c\u4e26\u914d\u5408\u7406\u60f3\u7684\u512a\u5148\u9806\u5e8f\u7b56\u7565\uff0c\u53ef\u4ee5\u5e6b\u52a9\u700f\u89bd\u5668\u8207\u4e0b\u8f09\u5de5\u5177\u66f4\u6709\u6548\u5730\u5229\u7528\u6bcf\u4e00\u689d\u9023\u7dda\u3002\u5728\u9069\u7576\u5834\u666f\u4e0b\uff0c\u4f60\u4e5f\u53ef\u4ee5\u660e\u78ba\u5efa\u8b70\u7528\u6236\u7aef\u5c0d\u5927\u6a94\u6848\u63a1\u7528\u591a\u5206\u6bb5\u4f75\u767c\u4e0b\u8f09\uff0c\u4ee5\u5c0d\u6c96\u8def\u5f91\u54c1\u8cea\u7684\u6ce2\u52d5\u3002\n  <\/li>\n<li>\n    <strong>\u5408\u7406\u898f\u5283\u4f3a\u670d\u5668\u79df\u7528\uff0f\u4f3a\u670d\u5668\u8a17\u7ba1\u7684\u983b\u5bec\u8207\u57e0\u53e3\u898f\u683c<\/strong><br \/>\n    \u5c0d\u90a3\u4e9b\u78ba\u5be6\u7d93\u5e38\u300c\u9802\u6eff\u300d\u627f\u8afe\u983b\u5bec\u7684\u4f3a\u670d\u5668\uff0c\u5347\u7d1a\u57e0\u53e3\u901f\u7387\u6216\u589e\u52a0\u5c08\u5c6c\u5bb9\u91cf\u662f\u5408\u7406\u7684\u6295\u8cc7\u3002\u53cd\u4e4b\uff0c\u5982\u679c\u6e90\u7ad9\u57e0\u53e3\u9577\u671f\u8655\u65bc\u4f4e\u5229\u7528\u7387\uff0c\u5f80\u5f80\u900f\u904e\u512a\u5316\u8def\u7531\u3001\u5feb\u53d6\u548c\u50b3\u8f38\u5c64\u53c3\u6578\u6240\u7372\u5f97\u7684\u6536\u76ca\uff0c\u6703\u6bd4\u55ae\u7d14\u5806\u983b\u5bec\u66f4\u53ef\u89c0\u3002\n  <\/li>\n<li>\n    <strong>\u52a0\u5f37\u5168\u93c8\u8def\u89c0\u6e2c\u4e26\u6301\u7e8c\u8fed\u4ee3<\/strong><br \/>\n    \u70ba\u6bcf\u4e00\u5c64\u6253\u9ede\uff1a\u7cfb\u7d71\u8ca0\u8f09\u3001\u7db2\u8def\u4ecb\u9762\u8a08\u6578\u3001RTT \u5206\u4f48\u3001\u6d41\u91cf\u884c\u70ba\u3001CDN \u5feb\u53d6\u547d\u4e2d\u7387\u7b49\u3002\u628a\u9019\u4e9b\u6307\u6a19\u7d0d\u5165\u5b9a\u671f\u8a55\u5be9\uff0c\u4f7f\u56de\u6b78\u554f\u984c\u80fd\u88ab\u5118\u65e9\u767c\u73fe\uff0c\u540c\u6642\u4e5f\u80fd\u7528\u771f\u5be6\u4f7f\u7528\u8005\u9ad4\u9a57\u800c\u975e\u5be6\u9a57\u5ba4\u8cc7\u6599\u4f86\u9a57\u8b49\u6bcf\u4e00\u6b21\u8b8a\u66f4\u3002\n  <\/li>\n<\/ol>\n<p>\n\u9019\u4e9b\u884c\u52d5\u7684\u7d2f\u7a4d\u6548\u61c9\u5f80\u5f80\u5341\u5206\u986f\u8457\u3002\u5373\u4f7f\u4f60\u5728\u7f8e\u570b\u7684\u6e90\u7ad9\u983b\u5bec\u5716\u4e0a\u4ecd\u7136\u80fd\u770b\u5230\u300c\u7a7a\u9592\u7a7a\u9593\u300d\uff0c\u4f7f\u7528\u8005\u5176\u5be6\u66f4\u95dc\u5fc3\u7684\u4e26\u4e0d\u662f\u90a3\u4e9b\u5c1a\u672a\u4f7f\u7528\u7684\u5bb9\u91cf\uff0c\u800c\u662f\u4ed6\u5011\u81ea\u5df1\u7684\u63a5\u5165\u93c8\u8def\u662f\u5426\u80fd\u5920\u88ab\u7a69\u5b9a\u800c\u5145\u5206\u5730\u300c\u8dd1\u6eff\u300d\u3002\n<\/p>\n<h2><strong>11. \u6536\u675f\u300c\u983b\u5bec vs. \u9ad4\u9a57\u300d\u6096\u8ad6<\/strong><\/h2>\n<p>\n\u7ad9\u5728\u5de5\u7a0b\u5718\u968a\u7684\u8996\u89d2\uff0c\u4e00\u65e6\u4f60\u7528\u7aef\u5230\u7aef\u7684\u65b9\u5f0f\u4f86\u5efa\u6a21\u6574\u500b\u7cfb\u7d71\uff0c\u6709\u95dc\u300c\u4e0b\u8f09\u5f88\u6162\u4f46\u983b\u5bec\u5229\u7528\u7387\u5f88\u4f4e\u300d\u7684\u56f0\u60d1\u5c31\u6703\u7159\u6d88\u96f2\u6563\u3002\u8de8\u6d0b\u5ef6\u9072\u3001\u6613\u5c01\u5305\u907a\u5931\u8def\u5f91\u3001\u4fdd\u5b88\u7684\u58c5\u585e\u63a7\u5236\u3001\u4f3a\u670d\u7aef\u9650\u5236\u3001\u5feb\u53d6\u62d3\u6a38\u4ee5\u53ca\u8106\u5f31\u7684\u6700\u5f8c\u4e00\u516c\u91cc\u7db2\u8def\uff0c\u9019\u4e9b\u56e0\u7d20\u5f7c\u6b64\u4f5c\u7528\uff0c\u800c\u666e\u901a\u7684\u983b\u5bec\u5716\u6839\u672c\u7121\u6cd5\u523b\u756b\u9019\u7a2e\u8907\u96dc\u5ea6\u2014\u2014\u5373\u4f7f\u4f60\u5f9e\u4e00\u958b\u59cb\u5c31\u570d\u7e5e\u7f8e\u570b\u4f3a\u670d\u5668\u983b\u5bec\u512a\u5316\u4f86\u505a\u8a2d\u8a08\u3002\n<\/p>\n<p>\n\u8207\u5176\u628a\u7f8e\u570b\u67d0\u689d\u4e0a\u884c\u93c8\u8def\u4e0a\u5269\u9918\u7684\u983b\u5bec\u8996\u70ba\u300c\u4e00\u5207\u6b63\u5e38\u300d\u7684\u8b49\u64da\uff0c\u4e0d\u5982\u628a\u5b83\u7576\u4f5c\u773e\u591a\u8a0a\u865f\u4e2d\u7684\u4e00\u500b\u3002\u6cbf\u8457\u300c\u5f9e\u78c1\u789f\u5230\u6838\u5fc3\u3001\u5f9e\u7db2\u5361\u5230\u50b3\u8f38\u7db2\u8def\u3001\u5f9e\u9aa8\u5e79\u5230\u5bb6\u5ead\u8def\u7531\u5668\u300d\u7684\u8def\u5f91\u9010\u5c64\u8ffd\u8e64\u4f4d\u5143\u7d44\u7684\u6d41\u52d5\uff0c\u4e26\u89c0\u5bdf\u771f\u5be6\u4f7f\u7528\u8005\u5728\u4e0d\u540c\u689d\u4ef6\u4e0b\u7684\u884c\u70ba\u3002\u9019\u6a23\u7684\u8996\u89d2\u53ef\u4ee5\u628a\u7c60\u7d71\u7684\u300c\u4e0b\u8f09\u5f88\u6162\u300d\u62b1\u6028\uff0c\u62c6\u89e3\u70ba\u4e00\u500b\u500b\u53ef\u6e2c\u91cf\u7684\u5de5\u7a0b\u4efb\u52d9\uff0c\u8b93\u4f60\u5f97\u4ee5\u512a\u5148\u8655\u7406\u90a3\u4e9b\u771f\u6b63\u5728\u8def\u7531\u3001\u50b3\u8f38\u548c\u61c9\u7528\u5c64\u4e0a\u300c\u80fd\u52d5\u91dd\u300d\u7684\u6539\u52d5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f9e\u8868\u9762\u770b\uff0c\u9019\u50cf\u662f\u500b\u6096\u8ad6\uff1a\u4f60\u7684 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