\n \u6362\u53e5\u8bdd\u8bf4\uff0c300 \u79d2\u5904\u5728\u4e00\u4e2a\u975e\u5e38\u5b9e\u7528\u7684\u201c\u4e2d\u95f4\u5e26\u201d\uff1a\u8db3\u591f\u77ed\uff0c\u53ef\u4ee5\u652f\u6301\u654f\u6377\u5207\u6362\uff1b\u53c8\u8db3\u591f\u957f\uff0c\u4e0d\u81f3\u4e8e\u5728\u4e1a\u52a1\u9ad8\u5cf0\u65f6\u731b\u9524 DNS \u5c42\uff0c\u540c\u65f6\u5b83\u8db3\u591f\u7b80\u5355\uff0c\u56e2\u961f\u91cc\u6bcf\u4e2a\u4eba\u90fd\u80fd\u8f7b\u677e\u8bb0\u4f4f\uff0c\u800c\u4e0d\u5fc5\u7ffb\u8fd0\u884c\u624b\u518c\u3002\n <\/p>\n

4. \u5178\u578b\u573a\u666f\uff1a\u54ea\u4e9b\u65f6\u5019\u4f60\u4e00\u5b9a\u8981\u5148\u964d TTL<\/strong><\/h2>\n<\/h2>\n

\n \u591a\u6570\u8ba9\u4eba\u201c\u8840\u538b\u98d9\u5347\u201d\u7684 DNS \u4e8b\u6545\uff0c\u5176\u5b9e\u90fd\u9075\u5faa\u76f8\u4f3c\u5267\u672c\uff1a\u5728\u4e00\u4e2a\u9ad8 TTL \u4e4b\u4e0b\u76f4\u63a5\u6539\u8bb0\u5f55\uff0c\u7136\u540e\u770b\u7740\u4e00\u90e8\u5206\u7528\u6237\u5728\u63a5\u4e0b\u6765\u7684\u597d\u51e0\u4e2a\u5c0f\u65f6\uff0c\u4e00\u76f4\u6253\u5230\u9519\u8bef\u7684\u540e\u7aef\uff0c\u6700\u540e\u53ea\u597d\u5728\u5e94\u7528\u5c42\u5806\u8865\u4e01\u53bb\u63a9\u76d6\u884c\u4e3a\u4e0d\u4e00\u81f4\u3002\u4e8b\u5148\u964d\u4f4e TTL \u662f\u4e00\u4e2a\u6781\u5c0f\u7684\u52a8\u4f5c\uff0c\u5374\u80fd\u5b8c\u5168\u6d88\u706d\u8fd9\u4e00\u7c7b\u4e8b\u6545\u3002\n <\/p>\n

\n
1. \n \u4e3a\u7f8e\u56fd\u7528\u6237\u8fc1\u79fb\u670d\u52a1\u5668\u79df\u7528\u73af\u5883<\/strong><\/p>\n
   \n
   • \u628a\u670d\u52a1\u4ece\u5355\u533a\u57df VM \u8fc1\u79fb\u5230\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u670d\u52a1\u5546\u3002<\/li>\n
   • \u5c06\u535a\u5ba2\u6216\u8425\u9500\u7ad9\u70b9\u8fc1\u5230\u9759\u6001\u6258\u7ba1\u6216 CDN \u524d\u7f6e\u7684\u5bf9\u8c61\u5b58\u50a8\u3002<\/li>\n
   • \u5207\u6362\u7b56\u7565\uff1a\u63d0\u524d\u51e0\u5929\u964d\u4f4e TTL\uff0c\u7136\u540e\u5728\u89c4\u5212\u597d\u7684\u65f6\u95f4\u7a97\u5185\u5207\u6362 A \u6216 CNAME \u8bb0\u5f55\u3002<\/li>\n<\/ul>\n<\/li>\n
   • \n \u628a\u5de5\u4f5c\u8d1f\u8f7d\u8fc1\u5f80\u670d\u52a1\u5668\u6258\u7ba1\u673a\u623f<\/strong><\/p>\n
     \n
     • \u4ece\u529e\u516c\u5ba4\u673a\u67dc\u6216\u8001\u65e7\u673a\u623f\u642c\u5165\u73b0\u4ee3\u5316\u670d\u52a1\u5668\u6258\u7ba1\u6570\u636e\u4e2d\u5fc3\u3002<\/li>\n
     • \u4e3a API \u4e0e VPN \u66f4\u6362\u516c\u7f51\u5165\u53e3\uff0c\u540c\u65f6\u4fdd\u6301\u5ba2\u6237\u7aef\u4fe1\u4efb\u94fe\u4e0d\u53d8\u3002<\/li>\n
     • \u6536\u76ca\uff1a\u7f29\u77ed TTL \u80fd\u786e\u4fdd\u5ba2\u6237\u7aef\u66f4\u5feb\u505c\u6b62\u8bbf\u95ee\u65e7\u673a\u623f\u3002<\/li>\n<\/ul>\n<\/li>\n
     • \n \u53d8\u66f4 CDN\u3001WAF \u6216\u8d1f\u8f7d\u5747\u8861\u5668<\/strong><\/p>\n
       \n
       • \u7528\u6258\u7ba1\u8fb9\u7f18\u5e73\u53f0\u66ff\u6362\u81ea\u7814\u53cd\u5411\u4ee3\u7406\u3002<\/li>\n
       • \u5728\u5e94\u7528\u9632\u706b\u5899\u670d\u52a1\u540e\u66f4\u65b0 CNAMES\u3002<\/li>\n
       • \u5f53\u8bb0\u5f55\u5728\u8f83\u77ed TTL \u4e0b\u5207\u6362\u65f6\uff0c\u8fb9\u7f18\u8282\u70b9\u4f1a\u66f4\u5feb\u8ffd\u8e2a\u65b0\u7684\u6e90\u7ad9 IP\u3002<\/li>\n<\/ul>\n<\/li>\n
       • \n \u90ae\u4ef6\u7cfb\u7edf\u4e0e MX \u53d8\u66f4<\/strong><\/p>\n
         \n
         • \u66ff\u6362\u90ae\u4ef6\u670d\u52a1\u5546\uff0c\u6216\u628a\u90ae\u4ef6\u7f51\u5173\u642c\u5230\u66f4\u9760\u8fd1\u7f8e\u56fd\u7528\u6237\u7684\u533a\u57df\u3002<\/li>\n
         • \u5728\u540c\u4e00\u53d8\u66f4\u7a97\u53e3\u5185\u5bf9\u9f50 MX\u3001SPF \u53ca\u76f8\u5173\u8bb0\u5f55\u3002<\/li>\n
         • \u77ed TTL \u80fd\u5e2e\u52a9\u5916\u90e8\u53d1\u4ef6\u4eba\u66f4\u5feb\u6536\u655b\u5230\u65b0\u7684 MX\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

           5. \u4f7f\u7528 300 \u79d2 TTL \u7684\u5206\u6b65\u53d8\u66f4\u7b56\u7565<\/strong><\/h2>\n<\/h2>\n

           \n \u66f4\u5b89\u5168\u7684\u751f\u4ea7 DNS \u53d8\u66f4\u6d41\u7a0b\uff0c\u66f4\u50cf\u4e00\u4e2a\u7cbe\u7b80\u7248\u7684\u53d1\u5e03\u6d41\u6c34\u7ebf\uff0c\u800c\u4e0d\u662f\u4e34\u65f6\u5f00\u5173\u3002\u76ee\u6807\u662f\u5728\u771f\u6b63\u4fee\u6539\u8bb0\u5f55\u503c\u4e4b\u524d\uff0c\u5c31\u786e\u4fdd\u4e92\u8054\u7f51\u5404\u5904\u7684\u7f13\u5b58\u89e3\u6790\u5668\u5df2\u9075\u5b88\u4f60\u8bbe\u5b9a\u7684\u77ed\u751f\u547d\u5468\u671f\u7b56\u7565\u3002\n <\/p>\n

           \n
           1. \n \u76d8\u70b9\u6d89\u53ca\u7684\u8bb0\u5f55<\/strong><\/p>\n
              \n
              • \u8bc6\u522b\u6240\u6709\u76f8\u5173\u7684 A\u3001AAAA\u3001CNAME \u548c MX \u8bb0\u5f55\u3002<\/li>\n
              • \u7559\u610f\u9690\u85cf\u5728\u53cb\u597d\u4e3b\u673a\u540d\u4e4b\u540e\u7684 CNAME \u94fe\u3002<\/li>\n
              • \u8bb0\u5f55\u5f53\u524d TTL \u6570\u503c\uff0c\u5e76\u5173\u6ce8\u6240\u6709\u9ad8\u4e8e 600 \u79d2\u7684\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \n \u63d0\u524d\u964d\u4f4e TTL<\/strong><\/p>\n
                \n
                • \u5c06\u8fd9\u4e9b\u8bb0\u5f55\u7684 TTL \u8c03\u6574\u4e3a 300 \u79d2\uff0c\u4f46\u6682\u65f6\u4e0d\u8981\u4fee\u6539 IP\u3002<\/li>\n
                • \u901a\u8fc7 DNS \u670d\u52a1\u5546\u7684\u63a7\u5236\u53f0\u6216 API \u63d0\u4ea4\u5e76\u53d1\u5e03\u533a\u57df\u53d8\u66f4\u3002<\/li>\n
                • \u5982\u679c\u4f60\u6709\u955c\u50cf\u6216\u8f85\u57df\u540d\u670d\u52a1\u5668\uff0c\u786e\u4fdd\u5b83\u4eec\u90fd\u62ff\u5230\u65b0\u7684 TTL\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \n \u7b49\u5f85\u65e7\u7f13\u5b58\u201c\u81ea\u7136\u5931\u6548\u201d<\/strong><\/p>\n
                  \n
                  • \u5728\u6267\u884c\u6700\u7ec8\u5207\u6362\u524d\uff0c\u81f3\u5c11\u7b49\u5f85\u4e00\u4e2a\u5b8c\u6574\u7684\u65e7 TTL \u5468\u671f\u3002<\/li>\n
                  • \u5982\u679c\u65e7 TTL \u662f 3600\uff0c\u5c31\u7b49\u4e00\u4e2a\u5c0f\u65f6\uff1b\u5982\u679c\u662f 86400\uff0c\u5c31\u628a\u5207\u6362\u5b89\u6392\u5728\u7b2c\u4e8c\u5929\u3002<\/li>\n
                  • \u5728\u8fd9\u6bb5\u65f6\u95f4\u5185\uff0c\u89e3\u6790\u5668\u4f1a\u9010\u6b65\u6539\u4e3a\u9075\u5b88\u65b0\u7684\u4e94\u5206\u949f TTL \u5408\u540c\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • \n \u5728\u89c4\u5212\u597d\u7684\u53d8\u66f4\u7a97\u53e3\u5185\u4fee\u6539\u8bb0\u5f55<\/strong><\/p>\n
                    \n
                    • \u628a A \u6216 AAAA \u8bb0\u5f55\u5207\u5230\u65b0 IP\uff08\u65b0\u7684\u670d\u52a1\u5668\u79df\u7528\u96c6\u7fa4\u3001\u65b0\u7684\u670d\u52a1\u5668\u6258\u7ba1\u5730\u5740\u6bb5\uff0c\u6216\u65b0\u7684\u8d1f\u8f7d\u5747\u8861\u5668\uff09\u3002<\/li>\n
                    • \u66f4\u65b0\u6307\u5411\u65b0 CDN \u6216 WAF \u7aef\u70b9\u7684 CNAME \u8bb0\u5f55\u3002<\/li>\n
                    • \u5728\u4e00\u6bb5\u65f6\u95f4\u5185\uff0c\u8ba9\u76d1\u63a7\u540c\u65f6\u5173\u6ce8\u65e7\u8def\u5f84\u548c\u65b0\u8def\u5f84\u3002<\/li>\n<\/ul>\n<\/li>\n
                    • \n \u89c2\u5bdf\u5e76\u9a8c\u8bc1\u884c\u4e3a<\/strong><\/p>\n
                      \n
                      • \u68c0\u67e5\u4e24\u6761\u8def\u5f84\u7684\u9519\u8bef\u7387\u3001\u5ef6\u8fdf\u4e0e\u65e5\u5fd7\u91cf\u3002<\/li>\n
                      • \u4ece\u4e0d\u540c\u7f51\u7edc\u4f7f\u7528 dig<\/code> \u6216 nslookup<\/code> \u4e4b\u7c7b\u5de5\u5177\uff0c\u786e\u8ba4\u5b9e\u9645\u8fd4\u56de\u7684\u8bb0\u5f55\u3002<\/li>\n
                      • \u786e\u8ba4\u54cd\u5e94\u4e2d\u7684 TTL \u786e\u5b9e\u5df2\u7ecf\u662f 300 \u79d2\u3002<\/li>\n<\/ul>\n<\/li>\n
                      • \n \u89c6\u60c5\u51b5\u91cd\u65b0\u62c9\u9ad8 TTL<\/strong><\/p>\n
                        \n
                        • \u5728\u4e00\u5207\u7a33\u5b9a\u540e\uff0c\u53ef\u4ee5\u9002\u5ea6\u62c9\u9ad8 TTL\uff0c\u4ee5\u5c11\u91cf\u654f\u6377\u6027\u6362\u53d6\u66f4\u4f4e\u67e5\u8be2\u91cf\u3002<\/li>\n
                        • \u524d\u7aef\u8bb0\u5f55\u53ef\u4ee5\u4fdd\u6301\u5728 300\u2013600 \u79d2\uff0c\u800c\u6781\u5c11\u53d8\u66f4\u7684\u8bb0\u5f55\u53ef\u4ee5\u62c9\u5f97\u66f4\u957f\u3002<\/li>\n
                        • \u5728\u8fd0\u884c\u624b\u518c\u4e2d\u6e05\u6670\u8bb0\u5f55\u4f60\u9009\u5b9a\u7684\u57fa\u7ebf\u7b56\u7565\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                          6. \u4fee\u6539 TTL \u65f6\u7f13\u5b58\u5185\u90e8\u5230\u5e95\u53d1\u751f\u4e86\u4ec0\u4e48<\/strong><\/h2>\n<\/h2>\n

                          \n \u5f88\u591a\u56e2\u961f\u5bb9\u6613\u5ffd\u7565\u7684\u4e00\u4e2a\u7ec6\u8282\u662f\uff1a\u8c03\u6574 TTL \u5e76\u4e0d\u4f1a\u91cd\u5199\u5df2\u7ecf\u5b58\u5165\u9012\u5f52\u89e3\u6790\u5668\u4e2d\u7684\u201c\u5269\u4f59\u751f\u547d\u5468\u671f\u201d\u3002\u65b0\u7684 TTL \u53ea\u6709\u5728\u8fd9\u4e9b\u7f13\u5b58\u9879\u8fc7\u671f\u3001\u89e3\u6790\u5668\u518d\u6b21\u5411\u6743\u5a01\u670d\u52a1\u5668\u53d1\u8d77\u67e5\u8be2\u4e4b\u540e\u624d\u4f1a\u771f\u6b63\u88ab\u5e94\u7528\u3002\n <\/p>\n

                          \n
                          • \n \u5982\u679c\u5f53\u524d\u7f13\u5b58\u6761\u76ee\u8fd8\u5269\u4e00\u5c0f\u65f6\u6709\u6548\u671f\uff0c\u628a TTL \u964d\u5230\u4e94\u5206\u949f\u4e5f\u4e0d\u4f1a\u201c\u538b\u7f29\u201d\u6389\u90a3\u4e00\u5c0f\u65f6\u3002\n <\/li>\n
                          • \n \u4e00\u65e6\u8fd9\u4e00\u5c0f\u65f6\u7ed3\u675f\uff0c\u89e3\u6790\u5668\u5237\u65b0\u8bb0\u5f55\u540e\uff0c\u5c31\u4f1a\u5f00\u59cb\u4ee5\u65b0\u7684 300 \u79d2 TTL \u7f13\u5b58\u8fd4\u56de\u7684\u7b54\u6848\u3002<\/li>\n
                          • \n \u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u5728\u9ad8\u98ce\u9669\u5207\u6362\u4e4b\u524d\uff0c\u4e00\u5b9a\u8981\u63d0\u524d\u964d\u4f4e TTL\uff0c\u5c24\u5176\u662f\u4e4b\u524d\u7684 TTL \u6570\u503c\u672c\u6765\u5c31\u5f88\u5927\u7684\u65f6\u5019\u3002\n <\/li>\n<\/ul>\n

                            \n \u7406\u89e3\u8fd9\u4e00\u884c\u4e3a\u4f1a\u76f4\u63a5\u5f71\u54cd\u4f60\u7684\u53d8\u66f4\u65e5\u5386\uff1a\u4f60\u4f1a\u5728\u65e9\u671f\u5c31\u964d\u4f4e TTL\uff0c\u8ba9\u7f13\u5b58\u81f3\u5c11\u5b8c\u6210\u4e00\u6b21\u81ea\u7136\u8f6e\u6362\uff0c\u7136\u540e\u53ea\u5728\u786e\u4fe1\u89e3\u6790\u5668\u5df2\u7ecf\u53ef\u4ee5\u5feb\u901f\u4e22\u5f03\u65e7\u8bb0\u5f55\u65f6\uff0c\u624d\u6267\u884c\u771f\u6b63\u654f\u611f\u7684\u66f4\u65b0\u3002\n <\/p>\n

                            7. \u6743\u8861\uff1a\u5ef6\u8fdf\u3001\u8d1f\u8f7d\u4e0e\u89e3\u6790\u5668\u884c\u4e3a<\/strong><\/h2>\n<\/h2>\n

                            \n \u4ece\u6027\u80fd\u89d2\u5ea6\u770b\uff0c\u964d\u4f4e TTL \u80af\u5b9a\u4f1a\u5e26\u6765\u4e00\u4e9b\u526f\u4f5c\u7528\uff0c\u4f46\u5728\u5408\u7406\u8303\u56f4\u5185\u901a\u5e38\u90fd\u53ef\u63a5\u53d7\u3002\u5c24\u5176\u5728\u4eca\u5929\uff0c\u73b0\u4ee3 DNS \u670d\u52a1\u5546\u4f1a\u5728\u7f8e\u56fd\u53ca\u5168\u7403\u591a\u5730\u8fd0\u884c anycast \u6743\u5a01\u96c6\u7fa4\uff0c\u5728\u8fd9\u6837\u7684\u524d\u63d0\u4e0b\uff0c\u4e94\u5206\u949f\u8fd9\u4e00\u6570\u503c\u5f88\u96be\u6210\u4e3a\u538b\u57ae\u57fa\u7840\u8bbe\u65bd\u7684\u201c\u6700\u540e\u4e00\u6839\u7a3b\u8349\u201d\u3002\n <\/p>\n

                            \n
                            1. \n \u66f4\u9891\u7e41\u7684\u67e5\u8be2<\/strong><\/p>\n
                               \n
                               • \u7531\u4e8e\u53ef\u590d\u7528\u65f6\u95f4\u7f29\u77ed\uff0c\u9012\u5f52\u89e3\u6790\u5668\u9700\u8981\u66f4\u9891\u7e41\u5730\u53d1\u8d77\u67e5\u8be2\u3002<\/li>\n
                               • \u4f60\u7684\u65e5\u5fd7\u4f1a\u770b\u5230\u4e0e TTL \u4e0b\u964d\u5e45\u5ea6\u5927\u81f4\u6210\u6bd4\u4f8b\u7684\u67e5\u8be2\u91cf\u4e0a\u5347\u3002<\/li>\n
                               • \u53ea\u8981\u4f9b\u5e94\u5546\u591f\u4e13\u4e1a\uff0c\u901a\u5e38\u80fd\u8f7b\u677e\u5438\u6536\u8fd9\u70b9\u989d\u5916\u8d1f\u8f7d\u3002<\/li>\n<\/ul>\n<\/li>\n
                               • \n \u8f7b\u5fae\u7684\u5ef6\u8fdf\u5f71\u54cd<\/strong><\/p>\n
                                 \n
                                 • \u7ec8\u7aef\u7528\u6237\u53ef\u80fd\u4f1a\u9047\u5230\u66f4\u591a stub resolver \u7684\u7f13\u5b58\u672a\u547d\u4e2d\u3002<\/li>\n
                                 • \u4e0d\u8fc7\u5728\u6574\u4f53\u8bf7\u6c42\u8def\u5f84\u4e2d\uff0cDNS \u5ef6\u8fdf\u901a\u5e38\u53ea\u662f\u6781\u5c0f\u7684\u4e00\u90e8\u5206\u3002<\/li>\n
                                 • \u5b9e\u8df5\u4e2d\uff0c\u4e00\u6b21\u826f\u597d\u8fc1\u79fb\u5e26\u6765\u7684\u6570\u636e\u9762\u6536\u76ca\uff0c\u8fdc\u8fdc\u76d6\u8fc7\u8fd9\u70b9\u6210\u672c\u3002<\/li>\n<\/ul>\n<\/li>\n
                                 • \n \u89e3\u6790\u5668\u7684\u201c\u4e2a\u6027\u5316\u201d\u884c\u4e3a<\/strong><\/p>\n
                                   \n
                                   • \u4e00\u4e9b\u89e3\u6790\u5668\u4f1a\u5f3a\u5236\u6267\u884c\u81ea\u5df1\u7684 TTL \u6700\u5c0f\u503c\u6216\u6700\u5927\u503c\uff0c\u4e0d\u5b8c\u5168\u5c0a\u91cd\u533a\u57df\u914d\u7f6e\u3002<\/li>\n
                                   • \u516c\u5171\u89e3\u6790\u5668\u53ef\u80fd\u4f1a\u9650\u5236\u8d85\u5927\u7684 TTL\uff0c\u6216\u76f4\u63a5\u5ffd\u7565\u6781\u4f4e\u7684 TTL\u3002<\/li>\n
                                   • \u9009\u62e9 300 \u79d2\u8fd9\u6837\u7684\u4e2d\u7b49\u503c\uff0c\u901a\u5e38\u80fd\u5728\u8fd9\u4e9b\u201c\u4e2a\u6027\u201d\u4e4b\u4e0b\u4fdd\u6301\u66f4\u597d\u517c\u5bb9\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                                     8. \u9ad8\u7ea7\u7528\u6cd5\uff1a\u6253\u9020\u96f6\u505c\u673a\u5207\u6362<\/strong><\/h2>\n<\/h2>\n

                                     \n \u964d\u4f4e TTL \u53ea\u662f\u6253\u9020\u987a\u6ed1\u8fc1\u79fb\u5de5\u5177\u7bb1\u4e2d\u7684\u4e00\u4ef6\u5de5\u5177\u3002\u8fd0\u8425\u5173\u952e\u5e73\u53f0\u7684\u5de5\u7a0b\u5e08\uff0c\u5f80\u5f80\u8fd8\u4f1a\u628a\u77ed\u751f\u547d\u5468\u671f\u7684 DNS \u7b54\u6848\uff0c\u4e0e\u6d41\u91cf\u5206\u6d41\u3001\u5065\u5eb7\u68c0\u67e5\u548c\u5206\u9636\u6bb5\u53d1\u5e03\u7ec4\u5408\u5728\u4e00\u8d77\u4f7f\u7528\u3002\n <\/p>\n

                                     \n
                                     • \n \u57fa\u4e8e DNS \u7684\u84dd\u7eff\u53d1\u5e03<\/strong><\/p>\n
                                       \n
                                       • \u7ef4\u62a4\u4e24\u5957\u5b8c\u5168\u72ec\u7acb\u7684\u6808\uff1a\u201c\u84dd\u201d\u4e0e\u201c\u7eff\u201d\uff0c\u5404\u81ea\u4f7f\u7528\u4e0d\u540c\u7684 IP\u3002<\/li>\n
                                       • \u751f\u4ea7\u8bb0\u5f55\u59cb\u7ec8\u53ea\u6307\u5411\u5176\u4e2d\u4e00\u5957\uff0c\u53e6\u4e00\u5957\u7528\u6765\u505a\u5347\u7ea7\u548c\u538b\u6d4b\u3002<\/li>\n
                                       • TTL \u8f83\u77ed\u65f6\uff0c\u4e00\u65e6\u53d1\u73b0\u95ee\u9898\uff0c\u5c31\u80fd\u8fc5\u901f\u5728\u4e24\u5957\u73af\u5883\u4e4b\u95f4\u5207\u6362\u3002<\/li>\n<\/ul>\n<\/li>\n
                                       • \n Shadow \u6d41\u91cf<\/strong><\/p>\n
                                         \n
                                         • \u5728\u628a\u9762\u5411\u7f8e\u56fd\u7528\u6237\u7684 API \u8fc1\u5f80\u65b0\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u524d\uff0c\u5148\u5c06\u90e8\u5206\u8bf7\u6c42\u955c\u50cf\u5230\u65b0\u6808\u8fdb\u884c\u9a8c\u8bc1\u3002<\/li>\n
                                         • \u5728\u4e0d\u5f71\u54cd\u771f\u5b9e\u7528\u6237\u7684\u524d\u63d0\u4e0b\uff0c\u5bf9\u6bd4\u54cd\u5e94\u5185\u5bb9\u4e0e\u5ef6\u8fdf\u3002<\/li>\n
                                         • \u5f53\u65b0\u6808\u5728 shadow \u6d41\u91cf\u4e0b\u8868\u73b0\u7a33\u5b9a\uff0c\u771f\u6b63\u7684 DNS \u5207\u6362\u5c31\u6ca1\u90a3\u4e48\u53ef\u6015\u3002<\/li>\n<\/ul>\n<\/li>\n
                                         • \n \u6309\u5730\u57df\u6e10\u8fdb\u5f0f\u5207\u6362<\/strong><\/p>\n
                                           \n
                                           • \u5728\u591a\u4e2a\u6570\u636e\u4e2d\u5fc3\u6216\u670d\u52a1\u5668\u6258\u7ba1\u673a\u623f\u540c\u65f6\u8fd0\u884c\u524d\u7aef\u3002<\/li>\n
                                           • \u4ece\u4f4e\u98ce\u9669\u533a\u57df\u5f00\u59cb\uff0c\u6309\u5730\u57df\u9010\u6b65\u5f15\u5165\u65b0\u7684\u5165\u53e3\u7aef\u70b9\u3002<\/li>\n
                                           • \u8f83\u77ed TTL \u80fd\u8ba9\u533a\u57df\u5316\u8c03\u6574\u4fdd\u6301\u66f4\u7075\u6d3b\u3001\u66f4\u5b9e\u65f6\u3002<\/li>\n<\/ul>\n<\/li>\n
                                           • \n \u5206\u5c42\u6545\u969c\u5207\u6362<\/strong><\/p>\n
                                             \n
                                             • \u628a\u5065\u5eb7\u68c0\u67e5 DNS\u3001\u8d1f\u8f7d\u5747\u8861\u4e0e\u7194\u65ad\u673a\u5236\u5206\u5c42\u7ec4\u5408\u8d77\u6765\u3002<\/li>\n
                                             • \u8ba9 DNS \u8d1f\u8d23\u7c97\u7c92\u5ea6\u8def\u7531\u4e0e\u201c\u4e0a\u9650\u6536\u655b\u65f6\u95f4\u201d\u3002<\/li>\n
                                             • \u628a\u77ac\u65f6\u6545\u969c\u7559\u7ed9\u96c6\u7fa4\u5185\u90e8\u673a\u5236\u53bb\u5904\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                                               9. \u53ef\u89c2\u6d4b\u6027\uff1a\u4ec0\u4e48\u65f6\u5019\u53ef\u4ee5\u653e\u5fc3\u547c\u5438<\/strong><\/h2>\n<\/h2>\n

                                               \n \u4e00\u6b21 DNS \u53d8\u66f4\u662f\u5426\u6210\u529f\uff0c\u5e76\u4e0d\u662f\u5728\u4f60\u6309\u4e0b\u201c\u786e\u8ba4\u201d\u6309\u94ae\u7684\u90a3\u4e00\u523b\u51b3\u5b9a\u7684\uff0c\u800c\u662f\u5728\u4e4b\u540e\u7684\u51e0\u5206\u949f\u4e43\u81f3\u51e0\u5341\u5206\u949f\u91cc\u3002\u77ed TTL \u5e26\u6765\u4e86\u66f4\u5feb\u7684\u53cd\u9988\u5faa\u73af\uff0c\u4f46\u4f60\u4ecd\u7136\u9700\u8981\u5404\u79cd\u4fe1\u53f7\u6765\u5224\u65ad\uff0c\u65b0\u8def\u5f84\u7684\u884c\u4e3a\u662f\u5426\u771f\u7684\u7b26\u5408\u9884\u671f\u3002\n <\/p>\n

                                               \n
                                               1. \n \u5ba2\u6237\u7aef\u4e0e\u8fb9\u7f18\u9065\u6d4b<\/strong><\/p>\n
                                                  \n
                                                  • \u5173\u6ce8\u8de8\u5730\u57df\u7684\u9519\u8bef\u7387\u3001\u8fde\u63a5\u5c1d\u8bd5\u6b21\u6570\u548c\u91cd\u8bd5\u60c5\u51b5\u3002<\/li>\n
                                                  • \u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\uff0c\u5206\u522b\u8ddf\u8e2a\u65e7\u7aef\u70b9\u548c\u65b0\u7aef\u70b9\u7684\u5404\u9879\u6307\u6807\u3002<\/li>\n
                                                  • \u4e3a\u72b6\u6001\u770b\u677f\u63d0\u4f9b\u6309\u89e3\u6790\u5668\u6216 ASN \u62c6\u5206\u7684\u6570\u636e\u89c6\u89d2\u3002<\/li>\n<\/ul>\n<\/li>\n
                                                  • \n DNS \u67e5\u8be2\u65e5\u5fd7<\/strong><\/p>\n
                                                    \n
                                                    • \u8bb0\u5f55\u6765\u81ea\u6743\u5a01\u670d\u52a1\u5668\u7684\u54cd\u5e94\uff0c\u5305\u62ec\u5b9e\u9645\u8fd4\u56de\u7684 TTL\u3002<\/li>\n
                                                    • \u786e\u8ba4\u5728\u51e0\u5206\u949f\u5185\uff0c\u6d41\u91cf\u4f1a\u7a33\u6b65\u8fc1\u79fb\u5230\u65b0\u7b54\u6848\u4e0a\u3002<\/li>\n
                                                    • \u8bc6\u522b\u6781\u4e2a\u522b\u4ecd\u7136\u201c\u62b1\u7740\u65e7\u6570\u636e\u4e0d\u653e\u201d\u7684\u89e3\u6790\u5668\uff0c\u5e76\u76f8\u5e94\u8c03\u6574\u9884\u671f\u3002<\/li>\n<\/ul>\n<\/li>\n
                                                    • \n \u7c7b Canary \u7684\u57df\u540d\u63a2\u6d4b<\/strong><\/p>\n
                                                      \n
                                                      • \u521b\u5efa\u4e00\u6b21\u6027\u6d4b\u8bd5\u4e3b\u673a\u540d\uff0c\u7528\u6765\u9a8c\u8bc1\u89e3\u6790\u5668\u5bf9\u66f4\u65b0\u540e TTL \u7684\u5904\u7406\u884c\u4e3a\u3002<\/li>\n
                                                      • \u7528\u81ea\u52a8\u5316\u811a\u672c\u5728\u4e0d\u540c\u7f51\u7edc\u548c\u5730\u57df\u5468\u671f\u6027\u6267\u884c dig<\/code>\u3002<\/li>\n
                                                      • \u628a\u89c2\u6d4b\u5230\u7684\u6536\u655b\u65f6\u95f4\u8bb0\u5f55\u4e3a\u4f60\u7684\u8fd0\u7ef4\u57fa\u7ebf\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                                                        10. \u7ed9\u5de5\u7a0b\u56e2\u961f\u7684\u5b9e\u7528\u7ecf\u9a8c\u6cd5\u5219<\/strong><\/h2>\n<\/h2>\n

                                                        \n \u5176\u5b9e\uff0c\u4f60\u5b8c\u5168\u4e0d\u5fc5\u628a DNS \u641e\u6210\u4e00\u95e8\u590d\u6742\u5b66\u79d1\uff0c\u53ea\u8981\u56e2\u961f\u5171\u4eab\u82e5\u5e72\u7b80\u6d01\u89c4\u5219\uff0c\u5e76\u628a\u5b83\u4eec\u690d\u5165\u65e5\u5e38\u6d41\u7a0b\u4e2d\u5c31\u8db3\u591f\u4e86\u3002\u628a TTL \u7ba1\u7406\u89c6\u4f5c\u90e8\u7f72\u536b\u751f\u7684\u4e00\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u5076\u53d1\u7684\u8fd0\u7ef4\u5947\u6280\uff0c\u662f\u66f4\u5065\u5eb7\u7684\u59ff\u52bf\u3002\n <\/p>\n

                                                        \n
                                                        • \n \u628a TTL \u53d8\u66f4\u5f53\u6210\u4ee3\u7801\uff1a\u6709\u7248\u672c\u3001\u6709\u8bc4\u5ba1\uff0c\u5e76\u901a\u8fc7\u6cbb\u7406\u57fa\u7840\u8bbe\u65bd\u7684\u540c\u4e00\u5957\u6d41\u6c34\u7ebf\u6765\u53d1\u5e03\u3002\n <\/li>\n
                                                        • \n \u8ba9\u9762\u5411\u751f\u4ea7\u7684\u5173\u952e\u8bb0\u5f55\u9ed8\u8ba4\u91c7\u7528\u4e00\u79cd TTL\uff0c\u4f7f\u5f97\u5728\u4e00\u4e2a\u5de5\u4f5c\u5c0f\u65f6\u5185\u53ef\u4ee5\u5b89\u5168\u5b8c\u6210\u53d8\u66f4\uff0c\u800c\u4e0d\u81f3\u4e8e\u614c\u4e71\u3002<\/li>\n
                                                        • \n \u5728\u91cd\u8981\u5e73\u53f0\u8fc1\u79fb\u7684\u524d\u51e0\u5929\uff0c\u5c31\u4e3b\u52a8\u964d\u4f4e TTL\uff0c\u800c\u4e0d\u662f\u7b49\u7b2c\u4e00\u5305\u6d41\u91cf\u6253\u5411\u65b0\u670d\u52a1\u5668\u79df\u7528\u6216\u670d\u52a1\u5668\u6258\u7ba1\u73af\u5883\u65f6\u624d\u60f3\u8d77\u6765\u3002<\/li>\n
                                                        • \n \u660e\u786e\u5199\u51fa\u4f9d\u8d56\u5f53\u524d TTL \u7b56\u7565\u7684\u56de\u9000\u65b9\u6848\uff0c\u8ba9\u503c\u73ed\u4eba\u5458\u77e5\u9053\u5f53\u4e8b\u60c5\u51fa\u9519\u65f6\uff0c\u6700\u7cdf\u7cd5\u9700\u8981\u5fcd\u53d7\u591a\u957f\u65f6\u95f4\u3002<\/li>\n<\/ul>\n

                                                          \n \u4ee5\u8fd9\u79cd\u5fc3\u6001\u6765\u770b\uff0c\u9009\u62e9 300 \u79d2\u5e76\u4e0d\u662f\u6559\u6761\uff0c\u800c\u662f\u4e00\u79cd\u56e2\u961f\u5171\u4eab\u7684\u8fd0\u7ef4\u8bed\u8a00\uff1a\u6240\u6709\u4eba\u90fd\u6e05\u695a\uff0c\u5728\u5173\u952e\u53d8\u66f4\u7a97\u53e3\u5185\uff0c\u7f13\u5b58\u4f1a\u88ab\u523b\u610f\u201c\u62f4\u77ed\u7ef3\u201d\uff0c\u56de\u6eda\u5219\u5929\u7136\u5feb\u6377\u3002\n <\/p>\n

                                                          11. \u603b\u7ed3\uff1a\u628a TTL \u6253\u9020\u6210\u5b89\u5168\u62c9\u6746<\/strong><\/h2>\n<\/h2>\n

                                                          \n \u5bf9\u8fd0\u8425\u4e92\u8054\u7f51\u670d\u52a1\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0cDNS \u4e0d\u53ea\u662f\u5730\u5740\u89e3\u6790\uff1b\u5b83\u662f\u4f60\u4e3a\u6570\u4e0d\u591a\u3001\u53ef\u4ee5\u76f4\u63a5\u5f71\u54cd\u201c\u5916\u90e8\u4e16\u754c\u5bf9\u4f60\u57fa\u7840\u8bbe\u65bd\u53d8\u5316\u53cd\u5e94\u901f\u5ea6\u201d\u7684\u62c9\u6746\u4e4b\u4e00\u3002\u5728\u771f\u6b63\u5207\u6362\u8bb0\u5f55\u4e4b\u524d\uff0c\u6709\u610f\u8bc6\u5730\u628a\u7f13\u5b58\u65f6\u957f\u538b\u7f29\u5230\u4e94\u5206\u949f\u7684\u65f6\u95f4\u5730\u5e73\u7ebf\uff0c\u5c31\u7b49\u4e8e\u7ed9\u81ea\u5df1\u7559\u51fa\u4e86\u4e00\u6761\u53ef\u63a7\u3001\u53ef\u56de\u9000\u7684\u901a\u9053\uff0c\u53bb\u5728\u65e7\u7aef\u70b9\u548c\u65b0\u7aef\u70b9\u4e4b\u95f4\u8def\u7531\u7528\u6237\u2014\u2014\u65e0\u8bba\u8fd9\u4e9b\u7aef\u70b9\u662f\u4e91\u4e0a\u7684\u670d\u52a1\u5668\u79df\u7528\u96c6\u7fa4\u3001\u7cbe\u5fc3\u90e8\u7f72\u5728\u670d\u52a1\u5668\u6258\u7ba1\u673a\u67dc\u4e2d\u7684\u72ec\u7acb\u670d\u52a1\u5668\uff0c\u8fd8\u662f\u4e24\u8005\u6df7\u5408\u6784\u6210\u7684\u6df7\u5408\u62d3\u6251\u2014\u2014\u800c\u8fd9\u6b63\u662f\u90a3\u4e9b\u8c28\u614e\u56e2\u961f\u5728\u8bbe\u8ba1\u5065\u5eb7\u53d8\u66f4\u9884\u6848\u65f6\uff0c\u4f1a\u6807\u51c6\u5316\u91c7\u7528\u8bf8\u5982 DNS TTL 300 seconds \u8fd9\u7c7b\u6a21\u5f0f\u7684\u539f\u56e0\u6240\u5728\u3002\n <\/p>\n","protected":false},"excerpt":{"rendered":"

                                                          \u5982\u679c\u4f60\u6b63\u5728\u4e3a\u4e00\u4e2a\u751f\u4ea7\u57df\u540d\u89c4\u5212\u8bb0\u5f55\u53d8\u66f4\uff0c\u800c\u8fd9\u4e2a\u57df\u540d\u524d\u7aef\u627f\u8f7d\u7740\u9ad8\u5e76\u53d1 API\u3001\u4e00\u4e2a \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528 \u96c6\u7fa4\uff0c\u6216\u8005\u4e00\u4e2a\u591a\u533a\u57df\u670d\u52a1\u5668\u6258\u7ba1\u67b6\u6784\uff0c\u90a3\u4e48\u4f60\u9996\u5148\u8981\u8c03\u6574\u7684\u5e76\u4e0d\u662f IP \u5730\u5740\uff0c\u800c\u662f time-to-live\uff08TTL\uff09\u6570\u503c\u2014\u2014\u901a\u5e38\u4f1a\u5148\u628a\u5b83\u8c03\u4f4e\u5230\u7c7b\u4f3c DNS TTL 300 seconds\uff0c\u8fd9\u6837\u5728\u4f60\u91cd\u6392\u540e\u7aef\u62d3\u6251\u65f6\uff0c\u89e3\u6790\u5668\u548c\u5ba2\u6237\u7aef\u5c31\u4e0d\u4f1a\u7ee7\u7eed\u7d27\u62b1\u9648\u65e7\u7b54\u6848\u4e0d\u653e\u3002 1. \u95ee\u9898\u80cc\u666f\uff1a\u771f\u5b9e\u4e16\u754c\u91cc\u7684 DNS \u53d8\u66f4 \u5bf9\u5927\u591a\u6570\u5f00\u53d1\u8005\u800c\u8a00\uff0cDNS \u50cf\u662f\u5e95\u5c42\u7ba1\u9053\uff1a\u770b\u4e0d\u89c1\u3001\u591f\u65e0\u804a\uff0c\u53ea\u6709\u5728\u4e00\u7247\u706b\u6d77\u65f6\u624d\u4f1a\u88ab\u60f3\u8d77\u3002\u77db\u76fe\u5728\u4e8e\uff0c\u6bcf\u4e00\u6b21\u91cd\u5927\u57fa\u7840\u8bbe\u65bd\u8fc1\u79fb\u90fd\u8981\u7a7f\u8fc7\u8fd9\u5c42\u201c\u9690\u5f62\u201d\u7ec4\u4ef6\uff0c\u800c\u4f60\u5bf9\u7f13\u5b58\u89c4\u5219\u7684\u7ba1\u7406\u65b9\u5f0f\uff0c\u5c06\u51b3\u5b9a\u4e00\u6b21\u8fc1\u79fb\u7a76\u7adf\u662f\u6084\u65e0\u58f0\u606f\uff0c\u8fd8\u662f\u4eb2\u624b\u5236\u9020\u7684\u6545\u969c\u3002 \u628a\u5355\u4f53\u5e94\u7528\u4ece\u533a\u57df\u6027 VM \u8fc1\u5230\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u96c6\u7fa4\u3002 \u628a\u6d41\u91cf\u4ece\u673a\u623f\u81ea\u5efa\u673a\u67b6\u8fc1\u79fb\u5230\u9760\u8fd1\u7528\u6237\u7684\u6570\u636e\u4e2d\u5fc3\u670d\u52a1\u5668\u6258\u7ba1\u673a\u67dc\u3002 \u7528\u73b0\u4ee3 anycast \u6216\u4e91\u8fb9\u7f18\u7f51\u7edc\u66ff\u6362\u4f20\u7edf\u8d1f\u8f7d\u5747\u8861\u5668\u3002 \u4e3a API \u4e0a\u7ebf\u65b0\u7248\u672c\u5e76\u5207\u6362\u5230\u65b0\u7684 IP \u6bb5\u3002 \u8fd9\u4e9b\u52a8\u4f5c\u6bcf\u4e00\u4e2a\u90fd\u4f1a\u5e26\u6765\u81f3\u5c11\u4e00\u6b21\u8bb0\u5f55\u53d8\u66f4\uff0c\u5f80\u5f80\u8fd8\u662f\u4e00\u4e32\uff1a\u524d\u7aef\u7684 A \u4e0e AAAA \u8bb0\u5f55\u3001CDN \u7684 CNAME \u94fe\u3001\u5185\u90e8\u670d\u52a1\u53d1\u73b0\u7684 SRV \u8bb0\u5f55\u3001\u4ee5\u53ca\u90ae\u4ef6\u7cfb\u7edf\u7684 MX \u8bb0\u5f55\u3002\u5207\u6362\u8d8a\u5b89\u5168\uff0c\u4f60\u5c31\u8d8a\u5728\u610f\u8001\u7b54\u6848\u5728\u5404\u7ea7\u7f13\u5b58\u91cc\u8fd8\u80fd\u6d3b\u591a\u4e45\u3002 2. \u5feb\u901f\u56de\u987e\uff1aDNS \u548c TTL \u7a76\u7adf\u5728\u505a\u4ec0\u4e48 \u5728\u5e95\u5c42\uff0c\u57df\u540d\u7cfb\u7edf\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u52a0\u4e86\u6fc0\u8fdb\u7f13\u5b58\u5c42\u7684\u5206\u5e03\u5f0f\u952e\u503c\u5b58\u50a8\u3002\u67e5\u8be2\u4ece\u5ba2\u6237\u7aef\u5230 stub resolver\uff0c\u7ecf\u7531\u9012\u5f52\u89e3\u6790\u5668\uff0c\u4e00\u8def\u8d70\u5230\u6743\u5a01\u670d\u52a1\u5668\uff08\u5982\u679c\u524d\u9762\u6240\u6709\u7f13\u5b58\u90fd\u65e0\u6cd5\u547d\u4e2d\uff09\u3002\u9644\u5728\u6bcf\u6761\u8bb0\u5f55\u4e0a\u7684 time-to-live \u5b57\u6bb5\uff0c\u4f1a\u544a\u8bc9\u8fd9\u4e9b\u7f13\u5b58\u4e00\u4ef6\u4e8b\uff1a\u8fd9\u6761\u7b54\u6848\u53ef\u4ee5\u88ab\u590d\u7528\u591a\u4e45\u3002 \u6838\u5fc3\u6982\u5ff5\uff1aTTL \u662f\u57df\u540d\u6240\u6709\u8005\u548c\u6240\u6709\u7f13\u5b58\u89e3\u6790\u5668\u4e4b\u95f4\u7684\u201c\u5951\u7ea6\u201d\u3002\u4f60\u5b9e\u9645\u4e0a\u5728\u8bf4\uff1a\u201c\u5728 X \u79d2\u4e4b\u5185\uff0c\u4f60\u53ef\u4ee5\u4fe1\u4efb\u8fd9\u6761\u7b54\u6848\u3002\u201d […]<\/p>\n

                                                          Read More…<\/a><\/p>\n","protected":false},"author":1,"featured_media":35762,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[14243,14244,14245,14246,14247],"class_list":["post-35766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-dns-ttl-300-seconds","tag-dns-cutover","tag-dns-change-window","tag-low-ttl-strategy","tag-zero-downtime-migration"],"acf":[],"yoast_head":"\n