{"id":35814,"date":"2026-09-01T17:05:10","date_gmt":"2026-09-01T09:05:10","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/why-lower-dns-ttl-before-a-site-migration\/"},"modified":"2026-09-01T17:12:18","modified_gmt":"2026-09-01T09:12:18","slug":"why-lower-dns-ttl-before-a-site-migration","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/blog\/why-lower-dns-ttl-before-a-site-migration\/","title":{"rendered":"\u7f51\u7ad9\u8fc1\u79fb\u524d\u4e3a\u4ec0\u4e48\u8981\u964d\u4f4e DNS TTL"},"content":{"rendered":"<p>\n    \u5982\u679c\u4f60\u66fe\u7ecf\u76ef\u7740 traceroute \u53d1\u5446\uff0c\u60f3\u4e0d\u660e\u767d\u4e3a\u4ec0\u4e48\u5728\u4f60\u201c\u5207\u6362\u4e86 DNS\u201d \u5f88\u4e45\u4e4b\u540e\uff0c\u4ecd\u7136\u8fd8\u6709\u7528\u6237\u6253\u5230\u65e7 IP\uff0c\u90a3\u8fd9\u7bc7\u6587\u7ae0\u5c31\u662f\u4e3a\u4f60\u51c6\u5907\u7684\u3002\u6211\u4eec\u4f1a\u62c6\u89e3\u5728\u4f60\u8fc1\u79fb\u7f51\u7ad9\uff08\u7279\u522b\u662f\u628a\u4e1a\u52a1\u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\uff09\u65f6\uff0c\u89e3\u6790\u5668\u548c\u7f13\u5b58\u5185\u90e8\u7a76\u7adf\u53d1\u751f\u4e86\u4ec0\u4e48\uff0c\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u964d\u4f4e DNS TTL \u662f\u4f60\u5b9e\u73b0\u63a5\u8fd1\u96f6\u505c\u673a\u5207\u6362\u65f6\u6700\u6709\u529b\u7684\u63a7\u5236\u6746\u3002\u6574\u4e2a\u8fc7\u7a0b\u4e2d\u6211\u4eec\u4f1a\u53cd\u590d\u56f4\u7ed5\u4e00\u4e2a\u5177\u4f53\u77ed\u8bed\u6765\u601d\u8003\uff1a\u57fa\u4e8e DNS\u2011TTL \u914d\u7f6e\uff0c\u5b9e\u73b0\u7f51\u7ad9\u8fc1\u79fb\u81f3<a target=\"_blank\" href=\"https:\/\/www.varidata.com\/zh-cn\/server\/tokyo\/cn2\/\">\u65e5\u672c\u670d\u52a1\u5668<\/a>\u7684\u96f6\u505c\u673a\u6258\u7ba1\u4e0e\u673a\u67dc\u6258\u7ba1\u65b9\u6848 \u3002\n  <\/p>\n<h2><strong>1. \u7ed9\u6ca1\u8010\u5fc3\u5de5\u7a0b\u5e08\u770b\u7684 DNS TTL \u4e00\u6bb5\u8bdd\u89e3\u91ca<\/strong><\/h2>\n<\/h2>\n<p>\n    DNS \u7684 time-to-live\uff08TTL\uff09\u672c\u8d28\u4e0a\u5c31\u662f\u7f13\u5b58\u4e2d\u4e00\u6761\u8bb0\u5f55\u7684\u201c\u79df\u7ea6\u201d\u3002\u5728\u79df\u7ea6\u6709\u6548\u671f\u5185\uff0c\u9012\u5f52\u89e3\u6790\u5668\u4f1a\u5f88\u4e50\u610f\u4e00\u76f4\u8fd4\u56de\u65e7\u7b54\u6848\uff0c\u800c\u4e0d\u4f1a\u518d\u6b21\u8be2\u95ee\u4f60\u7684\u6743\u5a01 DNS \u670d\u52a1\u5668\u3002\u5728\u8fc1\u79fb\u573a\u666f\u4e2d\uff0c\u8fd9\u4e2a\u79df\u7ea6\u5c31\u662f\u5feb\u901f\u6536\u655b\u7684\u654c\u4eba\uff1a\u957f\u79df\u7ea6\u610f\u5473\u7740\u6709\u4e9b\u5ba2\u6237\u7aef\u4f1a\u5728\u5f88\u957f\u65f6\u95f4\u91cc\u7ee7\u7eed\u89e3\u6790\u5230\u65e7\u5730\u5740\u3002\u901a\u8fc7\u63d0\u524d\u628a TTL \u6536\u7f29\u5230\u8f83\u5c0f\u7684\u503c\uff08\u901a\u5e38\u4e0d\u8d85\u8fc7 300 \u79d2\uff09\uff0c\u4f60\u4f1a\u8feb\u4f7f\u89e3\u6790\u5668\u66f4\u9891\u7e41\u5730\u5237\u65b0\uff0c\u4ece\u800c\u8ba9\u7528\u6237\u6d41\u91cf\u7684\u5207\u6362\u66f4\u63a5\u8fd1\u4f60\u5b9e\u9645\u7684\u5272\u63a5\u65f6\u95f4\u7a97\u53e3\uff0c\u800c\u4e0d\u662f\u5728\u597d\u51e0\u4e2a\u5c0f\u65f6\u91cc\u968f\u673a\u6269\u6563\u3002([en.wikipedia.org](https:\/\/en.wikipedia.org\/wiki\/Time_to_live?utm_source=openai))\n  <\/p>\n<h2><strong>2. \u8fc1\u79fb\u8fc7\u7a0b\u4e2d DNS \u89e3\u6790\u7684\u771f\u5b9e\u884c\u4e3a<\/strong><\/h2>\n<\/h2>\n<p>\n    \u4ece\u534f\u8bae\u5c42\u9762\u770b\uff0c\u7f51\u7ad9\u8fc1\u79fb\u5bf9 DNS \u6765\u8bf4\u5e76\u6ca1\u6709\u4ec0\u4e48\u201c\u7279\u6b8a\u201d\u7684\u64cd\u4f5c\uff0c\u4f60\u53ea\u662f\u628a\u4e00\u6761 A \u6216 AAAA \u8bb0\u5f55\u4ece\u201c\u65e7\u6e90\u7ad9\u201d\u6539\u6210\u201c\u65b0\u6e90\u7ad9\u201d\u3002\u590d\u6742\u6027\u6765\u81ea DNS \u5468\u8fb9\u7684\u751f\u6001\uff1a\u591a\u5c42\u7f13\u5b58\uff08\u6d4f\u89c8\u5668\u3001\u64cd\u4f5c\u7cfb\u7edf stub resolver\u3001\u672c\u5730\u7f13\u5b58\u89e3\u6790\u5668\u3001\u8fd0\u8425\u5546\u53ca\u516c\u5171\u9012\u5f52\u89e3\u6790\u5668\uff09\u3001\u5404\u5bb6\u4e0d\u540c\u7684\u7f13\u5b58\u7b56\u7565\uff0c\u8fd8\u6709\u4e00\u4e9b\u4f1a\u65e0\u89c6\u4f60\u7cbe\u5fc3\u8bbe\u7f6e TTL \u7684\u95ee\u9898\u5b9e\u73b0\u3002\u5b9e\u9645\u6548\u679c\u5c31\u662f\uff0c\u5f53\u4f60\u4fee\u6539\u5730\u5740\u65f6\uff0c\u603b\u4f1a\u6709\u4e00\u90e8\u5206\u5ba2\u6237\u7aef\u6ede\u540e\uff0c\u7ee7\u7eed\u4f7f\u7528\u65e7\u6570\u636e\u4e00\u6bb5\u65f6\u95f4\u3002([en.wikipedia.org](https:\/\/en.wikipedia.org\/wiki\/Domain_Name_System?utm_source=openai))\n  <\/p>\n<ul>\n<li>\u6d4f\u89c8\u5668\u53ef\u4ee5\u72ec\u7acb\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58 DNS \u54cd\u5e94\u3002<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u7ef4\u62a4\u81ea\u5df1\u7684\u89e3\u6790\u7f13\u5b58\u3002<\/li>\n<li>\u9012\u5f52\u89e3\u6790\u5668\u4f1a\u4e3a\u6210\u5343\u4e0a\u4e07\u751a\u81f3\u4e0a\u767e\u4e07\u7528\u6237\u805a\u5408\u8bf7\u6c42\u3002<\/li>\n<li>\u6709\u4e9b\u89e3\u6790\u5668\u4f1a\u8986\u76d6 TTL\uff0c\u6216\u628a TTL \u9650\u5236\u5728\u81ea\u5df1\u7684\u7b56\u7565\u7a97\u53e3\u5185\u3002<\/li>\n<\/ul>\n<p>\n    \u4e00\u65e6\u4f60\u5728\u5730\u7406\u4e0a\u62c9\u5f00\u8ddd\u79bb\u2014\u2014\u4f8b\u5982\u4ece\u672c\u5730\u673a\u623f\u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\u533a\u57df\u2014\u2014\u89e3\u6790\u5668\u7684\u5206\u5e03\u4ee5\u53ca\u7f13\u5b58\u884c\u4e3a\u5c31\u4f1a\u66f4\u52a0\u5f02\u6784\uff1a\u6709\u7684\u7f51\u7edc\u5237\u65b0\u5f88\u5feb\uff0c\u6709\u7684\u5219\u6bd4\u4f60\u8bbe\u7f6e\u7684\u503c\u66f4\u957f\u65f6\u95f4\u5730\u4fdd\u7559\u9648\u65e7\u7b54\u6848\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u5728\u51e0\u4e4e\u6240\u6709\u4e25\u8083\u7684\u7f51\u7ad9\u8fc1\u79fb\u4f5c\u6218\u624b\u518c\u91cc\uff0c\u4e8b\u5148\u8c03\u4f18 TTL \u90fd\u662f\u5fc5\u5907\u6b65\u9aa4\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2804.html?utm_source=openai))\n  <\/p>\n<h2><strong>3. \u5ffd\u7565\u8fc1\u79fb\u524d TTL \u8c03\u6574\u4f1a\u53d1\u751f\u4ec0\u4e48<\/strong><\/h2>\n<\/h2>\n<p>\n    \u6211\u4eec\u6765\u5efa\u6a21\u4e00\u4e0b\uff0c\u5982\u679c\u4f60\u4fdd\u6301\u201c\u6b63\u5e38\u751f\u4ea7\u73af\u5883\u201d\u7684 TTL \u6570\u503c\u2014\u2014\u6bd4\u5982 3600 \u79d2\u30017200 \u79d2\u751a\u81f3\u6574\u6574\u4e00\u5929\u2014\u2014\u7136\u540e\u53ea\u662f\u5728\u8fc1\u79fb\u7a97\u53e3\u91cc\u76f4\u63a5\u7f16\u8f91\u8bb0\u5f55\uff0c\u4f1a\u51fa\u73b0\u54ea\u4e9b\u5931\u8d25\u6a21\u5f0f\u3002\u8fd9\u4e9b\u60c5\u51b5\u5e76\u4e0d\u662f\u7406\u8bba\u63a8\u6f14\uff0c\u800c\u662f\u771f\u5b9e\u5730\u51fa\u73b0\u5728\u5404\u5927\u670d\u52a1\u5546\u7684\u5de5\u5355\u3001\u4e8b\u6545\u56de\u987e\u548c\u590d\u76d8\u62a5\u544a\u91cc\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>\u6d41\u91cf\u201c\u8111\u88c2\u201d<\/strong><br \/>\n      \u4e00\u90e8\u5206\u89e3\u6790\u5668\u5f88\u5feb\u62ff\u5230\u4e86\u65b0 IP\uff0c\u53e6\u4e00\u90e8\u5206\u5219\u4f1a\u5728\u7f13\u5b58\u8fc7\u671f\u524d\u4e00\u76f4\u8fd4\u56de\u65e7\u7b54\u6848\u3002\u7ed3\u679c\u5c31\u662f\u5927\u91cf\u771f\u5b9e\u7528\u6237\u6d41\u91cf\u5728\u8f83\u957f\u4e00\u6bb5\u65f6\u95f4\u5185\uff0c\u540c\u65f6\u6253\u5230\u65e7\u96c6\u7fa4\u548c\u65b0\u96c6\u7fa4\u3002\u5982\u679c\u4f60\u7684\u5e94\u7528\u5b8c\u5168\u65e0\u72b6\u6001\u3001\u6570\u636e\u540c\u6b65\u53c8\u505a\u5230\u6781\u81f4\uff0c\u8fd9\u53ef\u80fd\u8fd8\u80fd\u63a5\u53d7\u3002\u4f46\u5927\u591a\u6570\u771f\u5b9e\u7cfb\u7edf\u81f3\u5c11\u90e8\u5206\u662f\u6709\u72b6\u6001\u7684\u2014\u2014\u4f1a\u8bdd\u3001\u8d2d\u7269\u8f66\u3001\u914d\u7f6e\u3001\u65e5\u5fd7\u7b49\u7b49\u3002\n    <\/li>\n<li>\n      <strong>\u6570\u636e\u5206\u53c9\u4e0e\u201c\u5e7d\u7075\u5199\u5165\u201d<\/strong><br \/>\n      \u5f53\u8fc1\u79fb\u6d89\u53ca\u5b58\u50a8\u6216\u6570\u636e\u5e93\u65f6\uff0c\u5199\u64cd\u4f5c\u53ef\u80fd\u4f1a\u540c\u65f6\u843d\u5728\u4e24\u4e2a\u6570\u636e\u4e2d\u5fc3\u3002\u5982\u679c\u65e5\u672c\u670d\u52a1\u5668\u88ab\u8bbe\u5b9a\u4e3a\u65b0\u7684\u6743\u5a01\u6570\u636e\u6e90\uff0c\u800c\u65e7\u5b9e\u4f8b\u53c8\u6ca1\u6709\u6301\u7eed\u5411\u65b0\u5b9e\u4f8b\u590d\u5236\uff0c\u4f60\u5c31\u4f1a\u4ea7\u751f\u201c\u5e7d\u7075\u5199\u5165\u201d\u2014\u2014\u7528\u6237\u8ba4\u4e3a\u5df2\u7ecf\u6210\u529f\u7684\u64cd\u4f5c\uff0c\u5b9e\u9645\u4e0a\u6c38\u8fdc\u6ca1\u6709\u8fdb\u5165\u6700\u7ec8\u7684\u6743\u5a01\u6570\u636e\u96c6\u3002\n    <\/li>\n<li>\n      <strong>\u6309\u5730\u57df\u5212\u5206\u7684\u5f02\u5e38<\/strong><br \/>\n      \u7531\u4e8e DNS \u7f13\u5b58\u662f\u5206\u5e03\u5f0f\u7684\uff0c\u4f60\u5f88\u5bb9\u6613\u9047\u5230\u8fd9\u6837\u7684\u60c5\u51b5\uff1a\u56fd\u5185\u6d41\u91cf\u5df2\u7ecf\u6253\u5230\u65b0\u6e90\u7ad9\uff0c\u800c\u6d77\u5916\u7528\u6237\u8fd8\u5728\u65e7\u6e90\u7ad9\uff0c\u6216\u8005\u53cd\u8fc7\u6765\u3002\u8c03\u8bd5\u65f6\u5c31\u4f1a\u9677\u5165\u5669\u68a6\uff1a\u4e00\u4e2a\u5730\u533a\u7684\u76d1\u63a7\u5168\u7eff\uff0c\u53e6\u4e00\u4e2a\u5730\u533a\u5374\u7b49\u4e8e\u5728\u8dd1\u53e6\u4e00\u5957\u90e8\u7f72\u3002\n    <\/li>\n<li>\n      <strong>\u628a\u641c\u7d22\u5f15\u64ce\u722c\u866b\u641e\u6655<\/strong><br \/>\n      \u722c\u866b\u672c\u8d28\u4e0a\u4e5f\u662f\u8eb2\u5728\u5927\u578b\u9012\u5f52\u89e3\u6790\u5668\u540e\u9762\u7684\u5ba2\u6237\u7aef\u3002\u5728\u8ba1\u5212\u7cdf\u7cd5\u7684\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\uff0c\u7d22\u5f15\u7cfb\u7edf\u53ef\u80fd\u4f1a\u4ea4\u66ff\u6293\u53d6\u4e0d\u540c\u7248\u672c\u7684\u5185\u5bb9\uff0c\u89c2\u5bdf\u5230\u4e0d\u4e00\u81f4\u7684 HTTP \u72b6\u6001\u7801\uff0c\u6216\u8005\u770b\u5230\u65e7\u7684\u91cd\u5b9a\u5411\u3002\u5bf9\u4e8e\u641c\u7d22\u6392\u540d\u800c\u8a00\uff0c\u76f8\u6bd4\u5c0f\u5e45\u5ea6\u7684\u5ef6\u8fdf\u4f18\u5316\uff0c\u201c\u7a33\u5b9a\u6027\u4fe1\u53f7\u201d\u5f80\u5f80\u66f4\u91cd\u8981\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2735.html?utm_source=openai))\n    <\/li>\n<\/ol>\n<p>\n    \u53ea\u8981\u5728\u5272\u63a5\u524d\u7684\u51e0\u5c0f\u65f6\u91cc\uff0c\u786e\u4fdd\u7f13\u5b58\u8db3\u591f\u77ed\uff0c\u5c31\u53ef\u4ee5\u5927\u5e45\u964d\u4f4e\u6574\u7c7b\u95ee\u9898\u51fa\u73b0\u7684\u6982\u7387\u3002\n  <\/p>\n<h2><strong>4. \u4e3a\u4ec0\u4e48\u8981\u63d0\u524d\u964d\u4f4e TTL\uff08\u800c\u4e0d\u662f\u6700\u540e\u4e00\u523b\uff09<\/strong><\/h2>\n<\/h2>\n<p>\n    \u964d\u4f4e TTL \u672c\u8eab\u4e5f\u662f\u4e00\u6b21 DNS \u53d8\u66f4\uff0c\u800c\u5b83\u53ea\u4f1a\u5728\u5df2\u6709\u7684\u9ad8 TTL \u54cd\u5e94\u81ea\u7136\u8fc7\u671f\u4e4b\u540e\u624d\u4f1a\u751f\u6548\u3002\u5982\u679c\u4f60\u5f53\u524d TTL \u662f 86400 \u79d2\uff0c\u5374\u5728\u8fc1\u79fb\u524d 5 \u5206\u949f\u624d\u628a\u5b83\u6539\u6210 300 \u79d2\uff0c\u5927\u591a\u6570\u89e3\u6790\u5668\u4f9d\u7136\u4f1a\u575a\u5b88\u4e4b\u524d\u62ff\u5230\u7684 86400 \u79d2\u79df\u7ea6\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cTTL \u53d8\u66f4\u4e0d\u662f\u201c\u8ffd\u6eaf\u751f\u6548\u201d\u7684\u3002\u6240\u4ee5\uff0c\u5927\u90e8\u5206\u8fd0\u7ef4\u6307\u5357\u624d\u4f1a\u5efa\u8bae\uff1a\u81f3\u5c11\u63d0\u524d\u4e00\u4e2a\u5b8c\u6574\u7684 TTL \u5468\u671f\uff0c\u751a\u81f3\u66f4\u65e9\uff0c\u5c31\u628a TTL \u964d\u4e0b\u6765\u3002([en.wikipedia.org](https:\/\/en.wikipedia.org\/wiki\/Time_to_live?utm_source=openai))\n  <\/p>\n<ul>\n<li>\u5148\u68c0\u67e5\u6240\u6709\u76f8\u5173\u8bb0\u5f55\u5f53\u524d\u7684 TTL \u6570\u503c\u3002<\/li>\n<li>\u8ba1\u5212\u81f3\u5c11\u5728\u4e00\u4e2a\u5b8c\u6574 TTL \u7a97\u53e3\u4e4b\u524d\u5c31\u628a\u5b83\u4eec\u8c03\u4f4e\u3002<\/li>\n<li>\u9a8c\u8bc1\u5404\u7c7b\u89e3\u6790\u5668\u5f00\u59cb\u9075\u5b88\u65b0\u7684\u66f4\u77ed TTL \u503c\u3002<\/li>\n<\/ul>\n<p>\n    \u5728\u5b9e\u8df5\u4e2d\uff0c\u5f88\u591a\u56e2\u961f\u90fd\u4f1a\u628a\u201c\u8fc1\u79fb TTL\u201d\u6807\u51c6\u5316\u4e3a 300 \u79d2\u3002\u8fd9\u662f\u4e00\u4e2a\u76f8\u5bf9\u6298\u4e2d\u3001\u53c8\u53ef\u64cd\u4f5c\u7684\u6570\u503c\uff1a\u89e3\u6790\u5668\u5237\u65b0\u8db3\u591f\u9891\u7e41\uff0c\u4f60\u80fd\u5728\u51e0\u5206\u949f\u5185\u770b\u5230\u8fd1\u4e4e\u5168\u7403\u7684\u6536\u655b\uff0c\u540c\u65f6\u53c8\u4e0d\u4f1a\u628a\u6743\u5a01 DNS \u670d\u52a1\u5668\u538b\u57ae\u3002\u4e91\u670d\u52a1\u5546\u548c DNS \u5382\u5546\u5728\u8c08\u5230\u5272\u63a5\u9636\u6bb5\u65f6\uff0c\u4e5f\u7ecf\u5e38\u7ed9\u51fa 60\u2013300 \u79d2\u8fd9\u6837\u4e00\u4e2a\u533a\u95f4\u3002([developers.cloudflare.com](https:\/\/developers.cloudflare.com\/learning-paths\/dns-best-practices\/concepts\/phase-2\/?utm_source=openai))\n  <\/p>\n<h2><strong>5. \u5177\u4f53\u6570\u503c\u5efa\u8bae\uff1a\u964d\u5230\u591a\u4f4e\uff0c\u63d0\u524d\u591a\u4e45<\/strong><\/h2>\n<\/h2>\n<p>\n    \u5bf9\u4e8e\u8fc1\u79fb\u5230\u65b0\u7684\u65e5\u672c\u670d\u52a1\u5668\u96c6\u7fa4\uff0c\u4f60\u53ef\u4ee5\u628a\u4e0b\u9762\u8fd9\u4e9b\u6570\u503c\u89c6\u4e3a\u201c\u6709\u5b9e\u6218\u80cc\u4e66\u201d\u7684\u57fa\u7ebf\uff0c\u800c\u4e0d\u662f\u62cd\u8111\u888b\u3002\u5b83\u4eec\u7efc\u5408\u53c2\u8003\u4e86\u5404\u5bb6\u8fd0\u8425\u5546\u516c\u5f00\u7684\u5efa\u8bae\uff0c\u4e5f\u6765\u81ea\u4e00\u7ebf\u7ecf\u9a8c\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>\u5e38\u89c4\u751f\u4ea7\u73af\u5883 TTL<\/strong><br \/>\n      \u5927\u591a\u6570\u7f51\u7ad9\u7684 TTL \u5728 1800\u20137200 \u79d2\u4e4b\u95f4\u3002\u8fd9\u80fd\u4fdd\u8bc1 DNS \u67e5\u8be2\u91cf\u4fdd\u6301\u5728\u4e00\u4e2a\u5408\u7406\u6c34\u5e73\uff0c\u540c\u65f6\u5728\u9700\u8981\u65f6\u8fd8\u80fd\u5728\u51e0\u5c0f\u65f6\u5185\u5b8c\u6210\u53d8\u66f4\u3002\u9ad8\u5ea6\u9759\u6001\u7684\u8bb0\u5f55\u6709\u65f6\u4f1a\u8bbe\u5f97\u66f4\u9ad8\u3002\n    <\/li>\n<li>\n      <strong>\u8fc1\u79fb\u524d TTL<\/strong><br \/>\n      \u5728\u6b63\u5f0f\u5272\u63a5\u524d\u81f3\u5c11 24\u201372 \u5c0f\u65f6\uff0c\u5c06\u6838\u5fc3 Web \u4e0e API \u8bb0\u5f55\u7684 TTL \u964d\u5230 300 \u79d2\uff0c\u6709\u65f6\u662f 120 \u79d2\u3002\u201c72 \u5c0f\u65f6\u201d\u7684\u505a\u6cd5\u4e3a\u90a3\u4e9b\u4f1a\u5f3a\u5236\u4fee\u6539 TTL \u6216\u5237\u65b0\u504f\u6162\u7684\u89e3\u6790\u5668\u7559\u51fa\u7f13\u51b2\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2804.html?utm_source=openai))\n    <\/li>\n<li>\n      <strong>\u8fc1\u79fb\u8fdb\u884c\u4e2d TTL<\/strong><br \/>\n      \u5728\u4f60\u786e\u4fe1\u5927\u90e8\u5206\u6d41\u91cf\u5df2\u7ecf\u6253\u5411\u65b0\u6e90\u7ad9\u3001\u7cfb\u7edf\u6307\u6807\u7a33\u5b9a\u4e4b\u524d\uff0c\u4e00\u76f4\u4fdd\u6301\u8f83\u77ed TTL\u3002\u6839\u636e\u6d41\u91cf\u6a21\u5f0f\u4e0d\u540c\uff0c\u8fd9\u4e2a\u65f6\u95f4\u53ef\u80fd\u662f\u6570\u5c0f\u65f6\u5230\u6574\u6574\u4e00\u5929\u3002\n    <\/li>\n<li>\n      <strong>\u8fc1\u79fb\u7a33\u5b9a\u540e\u7684 TTL<\/strong><br \/>\n      \u4e00\u65e6\u4e00\u5207\u6062\u590d\u5230\u201c\u65e0\u804a\u6a21\u5f0f\u201d\u2014\u2014\u201c\u65e0\u804a\u201d\u5728\u8fd0\u7ef4\u4e16\u754c\u91cc\u901a\u5e38\u662f\u597d\u4e8b\u2014\u2014\u5c31\u53ef\u4ee5\u628a TTL \u62c9\u56de\u66f4\u4fdd\u5b88\u7684\u6570\u503c\uff0c\u6bd4\u5982 1800\u20133600 \u79d2\uff0c\u7528\u4e8e\u957f\u671f\u8fd0\u884c\u3002\n    <\/li>\n<\/ol>\n<p>\n    \u5f53\u7136\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u6743\u5a01 DNS \u627f\u8f7d\u80fd\u529b\u3001\u67e5\u8be2\u91cf\u4ee5\u53ca\u8fd0\u7ef4\u6210\u719f\u5ea6\u5bf9\u8fd9\u4e9b\u6570\u5b57\u505a\u5fae\u8c03\u3002\u4f46\u6574\u4f53\u7684\u5f62\u72b6\u2014\u2014\u7a33\u5b9a\u671f TTL \u8f83\u9ad8\uff0c\u53d8\u66f4\u671f TTL \u8f83\u4f4e\u2014\u2014\u4ece\u4e2a\u4eba\u9879\u76ee\u5230\u591a\u533a\u57df\u7684\u5927\u578b\u751f\u4ea7\u7cfb\u7edf\u90fd\u5f88\u9002\u7528\u3002([arxiv.org](https:\/\/arxiv.org\/abs\/1606.09530?utm_source=openai))\n  <\/p>\n<h2><strong>6. \u65e5\u672c\u670d\u52a1\u5668\u573a\u666f\u7684\u7279\u6b8a\u8003\u91cf<\/strong><\/h2>\n<\/h2>\n<p>\n    \u628a\u4e1a\u52a1\u8fc1\u5165\u65e5\u672c\u670d\u52a1\u5668\u533a\u57df\uff0c\u4f1a\u5e26\u6765\u989d\u5916\u7684\u62d3\u6251\u4e0e\u65f6\u5ef6\u7ef4\u5ea6\uff0c\u4f7f TTL \u89c4\u5212\u7684\u91cd\u8981\u6027\u8fdb\u4e00\u6b65\u653e\u5927\u3002\u65e5\u672c\u4f4d\u4e8e\u4e1c\u4e9a\u5173\u952e\u4e92\u8054\u8282\u70b9\u4f4d\u7f6e\uff0c\u8bb8\u591a\u672c\u5730 ISP \u81ea\u5efa\u9012\u5f52\u89e3\u6790\u5668\uff0c\u5e76\u91c7\u7528\u5404\u81ea\u7684\u7b56\u7565\u3002\u968f\u7740\u6d41\u91cf\u4ece\u672c\u5730\u6216\u5176\u4ed6\u533a\u57df\u6570\u636e\u4e2d\u5fc3\u8fc1\u79fb\u5230\u4e1c\u4eac\u6216\u5927\u962a\u53ef\u7528\u533a\uff0c\u4f60\u4e0d\u4ec5\u6539\u53d8\u4e86\u5f80\u8fd4\u65f6\u5ef6\uff0c\u4e5f\u6539\u53d8\u4e86\u9ed8\u8ba4\u4f1a\u67e5\u8be2\u4f60\u57df\u540d\u7684\u89e3\u6790\u5668\u7fa4\u4f53\u3002([iij.ad.jp](https:\/\/www.iij.ad.jp\/en\/dev\/iir\/pdf\/iir_vol15_infra_EN.pdf?utm_source=openai))\n  <\/p>\n<ul>\n<li>\n      <strong>\u533a\u57df\u89e3\u6790\u5668\u7684\u81ea\u5b9a\u4e49 TTL \u7b56\u7565<\/strong><br \/>\n      \u4e00\u4e9b\u4e9a\u592a\u5730\u533a\u7684\u89e3\u6790\u5668\u4f1a\u628a\u6781\u4f4e\u7684 TTL \u5f3a\u5236\u63d0\u5347\u5230\u4f8b\u5982 300 \u6216 600 \u79d2\u3002\u56f4\u7ed5 300 \u79d2\u8fd9\u4e00\u4e0b\u9650\u6765\u89c4\u5212\u9884\u671f\uff0c\u4f1a\u66f4\u8d34\u8fd1\u73b0\u5b9e\u3002\n    <\/li>\n<li>\n      <strong>\u6df7\u5408\u8bbf\u95ee\u6a21\u5f0f<\/strong><br \/>\n      \u65e5\u672c\u672c\u5730\u7528\u6237\u53ef\u80fd\u4e3b\u8981\u4f7f\u7528\u672c\u5730 ISP \u7684\u89e3\u6790\u5668\uff0c\u800c\u6d77\u5916\u7528\u6237\u5219\u66f4\u591a\u7ecf\u7531\u5927\u578b\u516c\u5171\u89e3\u6790\u5668\u8bbf\u95ee\u3002\u4e24\u8005\u7684\u7f13\u5b58\u884c\u4e3a\u548c\u4f20\u64ad\u53ef\u89c2\u6d4b\u6027\u622a\u7136\u4e0d\u540c\uff0c\u56e0\u6b64\u4f60\u9700\u8981\u4ece\u591a\u4e2a\u63a2\u6d4b\u70b9\u3001\u591a\u4e2a\u5730\u533a\u6765\u6301\u7eed\u76d1\u63a7\u3002\n    <\/li>\n<li>\n      <strong>CDN \u4e0e\u591a CDN \u5c42<\/strong><br \/>\n      \u5982\u679c\u4f60\u5728\u65e5\u672c\u8fb9\u7f18\u8282\u70b9\u7ec8\u6b62\u7528\u6237\u6d41\u91cf\uff0c\u4f46\u4ecd\u7136\u9700\u8981\u8fc1\u79fb\u6e90\u7ad9\uff0c\u5c31\u5fc5\u987b\u641e\u6e05\u695a CDN \u81ea\u8eab\u7684 DNS \u5c42\u662f\u5982\u4f55\u8fd0\u4f5c\u7684\u3002\u5927\u578b CDN \u5f80\u5f80\u4f9d\u8d56\u975e\u5e38\u6fc0\u8fdb\u3001\u8d85\u4f4e TTL \u6765\u505a\u5730\u7406\u8def\u7531\uff0c\u4f60\u4e0d\u5e0c\u671b\u6e90\u7ad9\u7684 DNS \u53d8\u66f4\u7b56\u7565\u548c CDN \u7684\u8bbe\u8ba1\u4e92\u76f8\u201c\u6253\u67b6\u201d\u3002([globaldots.com](https:\/\/www.globaldots.com\/wp-content\/uploads\/2022\/04\/GlobalDots-How-to-Evaluate-and-Implement-Multi-CDN-Strategy_.pdf?utm_source=openai))\n    <\/li>\n<\/ul>\n<p>\n    \u7ed3\u5408\u8fd9\u4e9b\u56e0\u7d20\uff0c\u6700\u5e72\u51c0\u7684\u6a21\u5f0f\u901a\u5e38\u662f\uff1a\u5bf9\u5916\u4fdd\u6301\u7528\u6237\u53ef\u89c1\u57df\u540d\u7a33\u5b9a\uff0c\u628a\u5b83\u6307\u5411\u65e5\u672c\u4e00\u4e2a\u884c\u4e3a\u826f\u597d\u7684\u8fb9\u7f18\u5c42\u6216\u8d1f\u8f7d\u5747\u8861\u5c42\uff1b\u5728\u5185\u90e8\u518d\u7528\u4e13\u95e8\u7684 DNS \u6216\u670d\u52a1\u53d1\u73b0\u57df\u540d\u6765\u7ba1\u7406\u6e90\u7ad9\u8fc1\u79fb\uff0c\u5e76\u901a\u8fc7\u53ef\u8c03\u8282\u7684 TTL \u6765\u7cbe\u7ec6\u63a7\u5236\uff0c\u800c\u4e0d\u76f4\u63a5\u5f71\u54cd\u5916\u90e8\u5ba2\u6237\u7aef\u3002\n  <\/p>\n<h2><strong>7. \u8fc1\u79fb\u524d\u5230\u5e95\u8981\u4fee\u6539\u54ea\u4e9b\u8bb0\u5f55<\/strong><\/h2>\n<\/h2>\n<p>\n    \u4f60\u7684\u533a\u57df\u6587\u4ef6\u91cc\u5e76\u4e0d\u662f\u6240\u6709\u8bb0\u5f55\u90fd\u5e94\u8be5\u5728\u8fc1\u79fb\u524d\u4e00\u5200\u5207\u5730\u964d\u4f4e TTL\u3002\u76ee\u6807\u662f\uff1a\u5728\u5c3d\u91cf\u51cf\u5c11\u7528\u6237\u53ef\u89c1\u4e2d\u65ad\u7684\u524d\u63d0\u4e0b\uff0c\u907f\u514d\u65e0\u8c13\u5730\u653e\u5927 DNS \u67e5\u8be2\u91cf\uff0c\u4e5f\u907f\u514d\u8ba9\u4e0e\u8fc1\u79fb\u65e0\u5173\u7684\u670d\u52a1\u88ab\u7275\u8fde\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>\u6838\u5fc3 Web \u5165\u53e3<\/strong><br \/>\n      \u6839\u57df\u548c <code>www<\/code> \u4e3b\u673a\u540d\u7684 A \/ AAAA \u8bb0\u5f55\u3001\u5404\u4e3b\u5e94\u7528\u57df\u540d\u4ee5\u53ca\u91cd\u8981 API \u7aef\u70b9\uff0c\u662f\u6700\u4e3b\u8981\u7684 TTL \u4e0b\u8c03\u76ee\u6807\u3002\n    <\/li>\n<li>\n      <strong>\u652f\u6491\u578b\u5e94\u7528\u4e3b\u673a<\/strong><br \/>\n      \u7528\u4e8e\u540e\u53f0\u7ba1\u7406\u3001\u4eea\u8868\u76d8\u4ee5\u53ca\u7ecf\u516c\u7f51\u8bbf\u95ee\u7684\u5185\u90e8\u5de5\u5177\u5b50\u57df\uff0c\u4e5f\u5efa\u8bae\u4e00\u8d77\u52a0\u5165\u4f4e TTL \u961f\u5217\uff0c\u5c24\u5176\u662f\u5728\u5b83\u4eec\u4f1a\u540c\u6b65\u8fc1\u79fb\u5230\u65b0\u7684\u65e5\u672c\u670d\u52a1\u5668\u96c6\u7fa4\u65f6\u3002\n    <\/li>\n<li>\n      <strong>\u90ae\u4ef6\u4e0e MX \u8bb0\u5f55<\/strong><br \/>\n      \u5982\u679c\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\u90ae\u4ef6\u57fa\u7840\u8bbe\u65bd\u4e0d\u53d8\uff0c\u5c31\u4e0d\u8981\u52a8 MX \u7684 TTL\u3002\u5982\u679c\u8981\u8fc1\u79fb\u90ae\u4ef6\u7cfb\u7edf\uff0c\u6700\u597d\u5355\u72ec\u89c4\u5212\u90a3\u4e00\u5957\u8fc1\u79fb\uff1b\u90ae\u4ef6\u961f\u5217\u548c\u91cd\u8bd5\u673a\u5236\u6709\u81ea\u5df1\u7684\u4e00\u5957\u9884\u671f\u548c\u5931\u8d25\u6a21\u5f0f\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2735.html?utm_source=openai))\n    <\/li>\n<li>\n      <strong>TXT\u3001SPF \u548c DKIM<\/strong><br \/>\n      \u8ba4\u8bc1\u4e0e\u7b56\u7565\u7c7b\u8bb0\u5f55\u901a\u5e38\u4e0d\u4f1a\u53d7\u7eaf Web \u6e90\u7ad9\u8fc1\u79fb\u5f71\u54cd\uff0c\u56e0\u6b64\u4e00\u822c\u53ef\u4ee5\u4fdd\u6301\u539f\u6709 TTL \u4e0d\u52a8\u3002\n    <\/li>\n<\/ol>\n<p>\n    \u5728\u4fee\u6539\u4efb\u4f55\u4e1c\u897f\u4e4b\u524d\uff0c\u5148\u5bfc\u51fa\u5b8c\u6574\u7684\u533a\u57df\u6587\u4ef6\uff0c\u5e76\u7eb3\u5165\u7248\u672c\u63a7\u5236\u3002\u5f88\u591a\u8fc1\u79fb\u4e8b\u6545\u5e76\u975e\u6e90\u4e8e TTL \u9519\u914d\uff0c\u800c\u662f\u56e0\u4e3a\u67d0\u4e2a\u201c\u4f4e\u8bbf\u95ee\u91cf\u5b50\u57df\u540d\u201d\u88ab\u9057\u5fd8\uff0c\u7ed3\u679c\u5b83\u5b9e\u9645\u4e0a\u80cc\u540e\u8fde\u7740\u5173\u952e\u96c6\u6210\u3002\n  <\/p>\n<h2><strong>8. \u4f4e TTL \u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\u7684\u5b9e\u6218\u5267\u672c<\/strong><\/h2>\n<\/h2>\n<p>\n    \u4e0b\u9762\u662f\u4e00\u4efd\u8fd0\u7ef4\u5de5\u7a0b\u5e08\u53ef\u4ee5\u76f4\u63a5\u7167\u7740\u8d70\u7684\u6b65\u9aa4\u6e05\u5355\u3002\u5047\u8bbe\u4f60\u8981\u628a\u73b0\u6709\u751f\u4ea7\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u4ece\u4e00\u4e2a\u73af\u5883\u8fc1\u79fb\u5230\u65b0\u7684\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\uff0c\u8fd9\u4e2a\u73af\u5883\u53ef\u80fd\u662f\u4f60\u81ea\u5efa\uff0c\u4e5f\u53ef\u80fd\u662f\u7531\u63d0\u4f9b\u670d\u52a1\u5668\u79df\u7528\u6216\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\u7684\u5382\u5546\u6258\u7ba1\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>T\u201372\uff5e48 \u5c0f\u65f6\uff1a\u68b3\u7406\u5e76\u964d\u4f4e TTL<\/strong>  <\/p>\n<ul>\n<li>\u76d8\u70b9\u6240\u6709\u6307\u5411\u65e7\u6e90\u7ad9\u7684 A\u3001AAAA \u548c CNAME \u8bb0\u5f55\u3002<\/li>\n<li>\u5c06\u5b83\u4eec\u7684 TTL \u964d\u5230\u7ea6 300 \u79d2\uff08\u6216\u4f60\u7684\u670d\u52a1\u5546\u5141\u8bb8\u7684\u6700\u5c0f\u503c\uff09\u3002<\/li>\n<li>\u4f7f\u7528 <code>dig<\/code> \u548c <code>nslookup<\/code> \u5bf9\u591a\u4e2a\u516c\u5171\u89e3\u6790\u5668\u67e5\u8be2\uff0c\u786e\u8ba4\u65b0 TTL \u5df2\u51fa\u73b0\u5728\u54cd\u5e94\u91cc\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>T\u201348\uff5e24 \u5c0f\u65f6\uff1a\u6784\u5efa\u65b0\u73af\u5883<\/strong>  <\/p>\n<ul>\n<li>\u5728\u65e5\u672c\u670d\u52a1\u5668\u533a\u57df\u4e2d\u51c6\u5907\u597d\u8ba1\u7b97\u3001\u5b58\u50a8\u548c\u7f51\u7edc\u8d44\u6e90\u3002<\/li>\n<li>\u540c\u6b65\u4ee3\u7801\u3001\u6570\u636e\u548c\u914d\u7f6e\uff0c\u786e\u4fdd\u65b0\u65e7\u73af\u5883\u8bed\u4e49\u4e00\u81f4\u3002<\/li>\n<li>\u642d\u5efa\u76d1\u63a7\uff0c\u80fd\u591f\u533a\u5206\u6253\u5230\u65e7\u6e90\u7ad9\u548c\u65b0\u6e90\u7ad9\u7684\u6d41\u91cf\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>T\u201324\uff5e4 \u5c0f\u65f6\uff1a\u9a8c\u8bc1\u4e0e\u9884\u6f14<\/strong>  <\/p>\n<ul>\n<li>\u901a\u8fc7 hosts \u6587\u4ef6\u8986\u76d6\u6216\u53cc\u7ebf DNS \u7684\u65b9\u5f0f\uff0c\u4ece\u6307\u5b9a\u5ba2\u6237\u7aef\u8bbf\u95ee\u65b0\u6e90\u7ad9\u3002<\/li>\n<li>\u5bf9\u65e5\u672c\u73af\u5883\u8fdb\u884c\u70df\u96fe\u6d4b\u8bd5\u548c\u538b\u529b\u6d4b\u8bd5\u3002<\/li>\n<li>\u786e\u8ba4\u65e5\u5fd7\u3001\u6307\u6807\u548c\u94fe\u8def\u8ffd\u8e2a\u90fd\u5de5\u4f5c\u6b63\u5e38\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>T\u20131 \u5c0f\u65f6\uff1a\u51bb\u7ed3\u9ad8\u98ce\u9669\u53d8\u66f4<\/strong>  <\/p>\n<ul>\n<li>\u5982\u679c\u5e94\u7528\u6709\u72b6\u6001\uff0c\u63d0\u524d\u516c\u544a\u5185\u5bb9\u51bb\u7ed3\u6216\u7ef4\u62a4\u7a97\u53e3\u3002<\/li>\n<li>\u505a\u4e00\u6b21\u6700\u7ec8\u5907\u4efd\uff0c\u5e76\u9a8c\u8bc1\u786e\u5b9e\u53ef\u4ee5\u6062\u590d\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>\u5272\u63a5\u65f6\u523b\uff1a\u5207\u6362 DNS<\/strong>  <\/p>\n<ul>\n<li>\u5c06 A\/AAAA\/CNAME \u76ee\u6807\u66f4\u65b0\u4e3a\u65e5\u672c\u670d\u52a1\u5668\u6216\u5176\u524d\u7aef\u8d1f\u8f7d\u5747\u8861\u5730\u5740\u3002<\/li>\n<li>\u4ece\u591a\u4e2a\u89e3\u6790\u5668\u6301\u7eed\u67e5\u8be2 DNS \u7b54\u6848\uff0c\u7b49\u5f85\u5b83\u4eec\u5168\u90e8\u8fd4\u56de\u65b0 IP\u3002<\/li>\n<li>\u901a\u8fc7\u65e5\u5fd7\u4e0e\u5206\u6790\u7cfb\u7edf\u5b9e\u65f6\u89c2\u5bdf\u6d41\u91cf\u5207\u6362\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>\u5272\u63a5\u540e\uff1a\u89c2\u5bdf\u5e76\u4fdd\u6301<\/strong>  <\/p>\n<ul>\n<li>\u5728\u89c2\u5bdf\u4f1a\u8bdd\u3001\u5ef6\u8fdf\u548c\u9519\u8bef\u7387\u5f02\u5e38\u7684\u8fd9\u6bb5\u65f6\u95f4\u91cc\uff0c\u7ee7\u7eed\u4fdd\u6301\u4f4e TTL\u3002<\/li>\n<li>\u5982\u679c\u51fa\u73b0\u4e25\u91cd\u95ee\u9898\uff0c\u4f9d\u7136\u53ef\u4ee5\u901a\u8fc7\u518d\u6b21\u4fee\u6539 DNS \u5feb\u901f\u628a\u6d41\u91cf\u5207\u56de\u65e7\u73af\u5883\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n      <strong>T+24\uff5e48 \u5c0f\u65f6\uff1a\u518d\u6b21\u63d0\u9ad8 TTL<\/strong>  <\/p>\n<ul>\n<li>\u5f53\u65b0\u7684\u65e5\u672c\u90e8\u7f72\u5df2\u7ecf\u201c\u65e0\u804a\u4e14\u7a33\u5b9a\u201d\uff0c\u628a TTL \u8c03\u56de\u6b63\u5e38\u503c\u3002<\/li>\n<li>\u5728\u786e\u4fe1\u6ca1\u6709\u91cd\u8981\u6d41\u91cf\u518d\u6253\u5230\u65e7\u73af\u5883\u540e\uff0c\u518d\u8003\u8651\u4e0b\u7ebf\u6216\u56de\u6536\u65e7\u8d44\u6e90\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\n    \u8fd9\u79cd\u6d41\u7a0b\u4e0e\u4f17\u591a DNS \u4e0e\u8fc1\u79fb\u6307\u5357\u7684\u5efa\u8bae\u9ad8\u5ea6\u4e00\u81f4\uff1a\u63d0\u524d\u964d\u4f4e TTL\uff0c\u5145\u5206\u51c6\u5907\u65b0\u670d\u52a1\u5668\uff0c\u5207\u6362\u8bb0\u5f55\uff0c\u7136\u540e\u8010\u5fc3\u89c2\u6d4b\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2804.html?utm_source=openai))\n  <\/p>\n<h2><strong>9. \u9762\u5411\u6781\u5ba2\u7684\u5de5\u5177\u4e0e\u8c03\u8bd5\u6280\u5de7<\/strong><\/h2>\n<\/h2>\n<p>\n    \u65e2\u7136\u8bfb\u8005\u662f\u6280\u672f\u4eba\u5458\uff0c\u6211\u4eec\u5c31\u7a0d\u5fae\u591a\u8d70\u4e00\u6b65\uff0c\u770b\u4e00\u770b\u6709\u54ea\u4e9b\u76d1\u63a7\u4e0e\u8c03\u8bd5\u6280\u5de7\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u770b\u6e05 DNS \u53d8\u66f4\u5728\u771f\u5b9e\u73af\u5883\u4e2d\u7684\u4f20\u64ad\u60c5\u51b5\u3002\n  <\/p>\n<ul>\n<li>\n      <strong>\u76f4\u63a5\u201c\u8be2\u95ee\u201d\u89e3\u6790\u5668<\/strong><br \/>\n      \u4f7f\u7528 <code>dig @resolver-ip yourdomain.com A<\/code> \u6765\u67e5\u8be2\u6307\u5b9a\u9012\u5f52\u89e3\u6790\u5668\u2014\u2014\u5305\u62ec 1.1.1.1\u30018.8.8.8 \u4e4b\u7c7b\u7684\u516c\u5171\u89e3\u6790\u5668\uff0c\u4ee5\u53ca\u5c3d\u53ef\u80fd\u591a\u7684\u65e5\u672c\u672c\u5730\u8fd0\u8425\u5546\u89e3\u6790\u5668\u3002\u5bf9\u6bd4\u8fd4\u56de\u7684 TTL \u548c IP\uff0c\u770b\u770b\u4e0d\u540c\u5730\u70b9\u7684\u5dee\u5f02\u3002\n    <\/li>\n<li>\n      <strong>\u7ed9\u8fb9\u7f18\u5c42\u6253\u4e0a\u6807\u7b7e<\/strong><br \/>\n      \u5728\u65e7\u73af\u5883\u548c\u65b0\u73af\u5883\u4e2d\uff0c\u901a\u8fc7\u5e94\u7528\u65e5\u5fd7\u6216 HTTP \u5934\u6253\u4e0a\u4e0d\u540c\u6807\u8bb0\u3002\u5206\u6790\u54ea\u4e9b\u6765\u6e90 IP\u3001\u56fd\u5bb6\u6216 ASN \u5728\u5272\u63a5\u540e\u4ecd\u7136\u6253\u5230\u65e7\u96c6\u7fa4\u3002\n    <\/li>\n<li>\n      <strong>\u5229\u7528\u5916\u90e8\u63a2\u9488<\/strong><br \/>\n      \u4f7f\u7528\u5206\u5e03\u5f0f\u76d1\u63a7\u670d\u52a1\uff0c\u6216\u81ea\u5efa\u591a\u4e2a VPS \u63a2\u9488\u8282\u70b9\uff0c\u4ece\u4e0d\u540c\u5730\u533a\u6301\u7eed\u89e3\u6790\u57df\u540d\u5e76\u8bbf\u95ee HTTP \u7aef\u70b9\uff0c\u8ddf\u8e2a\u5168\u5c40\u7b54\u590d\u6536\u655b\u901f\u5ea6\u3002\n    <\/li>\n<li>\n      <strong>\u89c2\u5bdf\u89e3\u6790\u5668 TTL \u9012\u51cf<\/strong><br \/>\n      \u5bf9\u540c\u4e00\u4e2a\u89e3\u6790\u5668\u53cd\u590d\u67e5\u8be2\uff0c\u4f60\u53ef\u4ee5\u770b\u5230 TTL \u5982\u4f55\u4e00\u70b9\u70b9\u5012\u8ba1\u65f6\u3002\u5f53\u4f60\u89c2\u5bdf\u5230\u5b83\u4ece\u4f60\u8bbe\u5b9a\u7684\u65b0\u4f4e\u503c\u5f00\u59cb\u5012\u8ba1\uff0c\u8bf4\u660e\u8be5\u89e3\u6790\u5668\u7684\u65e7\u9ad8 TTL \u79df\u7ea6\u5df2\u7ecf\u5168\u90e8\u8fc7\u671f\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u5bf9\u4e8e\u8d85\u5927\u89c4\u6a21\u90e8\u7f72\uff0c\u4e00\u4e9b\u8fd0\u8425\u8005\u751a\u81f3\u4f1a\u6839\u636e TTL \u6570\u503c\u5efa\u6a21\u9884\u671f\u670d\u52a1\u5668\u8d1f\u8f7d\uff0c\u4ee5\u786e\u4fdd\u6743\u5a01 DNS \u5728\u7f29\u77ed TTL \u65f6\u4e0d\u4f1a\u88ab\u538b\u57ae\u3002\u5b66\u672f\u5de5\u4f5c\u4e5f\u663e\u793a\uff0c\u901a\u8fc7\u7cbe\u7ec6\u8c03\u6574\uff0c\u5b8c\u5168\u53ef\u4ee5\u5728\u4e0d\u628a\u6743\u5a01\u670d\u52a1\u5668\u6253\u7206\u7684\u524d\u63d0\u4e0b\uff0c\u5728\u7f13\u5b58\u6548\u7387\u548c\u8fc1\u79fb\u7075\u6d3b\u6027\u4e4b\u95f4\u53d6\u5f97\u8f83\u597d\u5e73\u8861\u3002([arxiv.org](https:\/\/arxiv.org\/abs\/1606.09530?utm_source=openai))\n  <\/p>\n<h2><strong>10. SEO \u4e0e\u7528\u6237\u4f53\u9a8c\uff1a\u8fd0\u7ef4\u51b3\u7b56\u5982\u4f55\u5f71\u54cd\u6392\u540d<\/strong><\/h2>\n<\/h2>\n<p>\n    \u641c\u7d22\u4f18\u5316\u8fdc\u4e0d\u53ea\u662f\u5143\u6570\u636e\u548c schema \u6807\u6ce8\u90a3\u4e48\u7b80\u5355\uff1b\u641c\u7d22\u5f15\u64ce\u5bf9\u5728\u7ebf\u7387\u548c\u4e00\u81f4\u6027\u6781\u5176\u654f\u611f\u3002\u4e00\u6b21\u89c4\u5212\u7cdf\u7cd5\u3001TTL \u8fc7\u957f\u7684\u7f51\u7ad9\u8fc1\u79fb\uff0c\u4f1a\u5728\u65e5\u5fd7\u91cc\u7559\u4e0b\u95f4\u6b47\u6027\u5b95\u673a\u3001\u8fde\u63a5\u65f6\u95f4\u5f02\u5e38\u62c9\u957f\u6216\u54cd\u5e94\u7ed3\u679c\u4e0d\u4e00\u81f4\u7684\u6a21\u5f0f\uff0c\u800c\u641c\u7d22\u5f15\u64ce\u4f1a\u5c06\u8fd9\u4e9b\u89c6\u4e3a\u8d28\u91cf\u95ee\u9898\u3002\n  <\/p>\n<ul>\n<li>\n      <strong>\u51cf\u5c11\u77ac\u65f6\u9519\u8bef<\/strong><br \/>\n      \u5982\u679c\u7528\u6237\u6216\u722c\u866b\u5728\u65e7\u6e90\u7ad9\u5df2\u7ecf\u534a\u4e0b\u7ebf\u4e4b\u540e\u4ecd\u7136\u6253\u5230\u5b83\uff0c\u53ef\u80fd\u4f1a\u770b\u5230 500 \u9519\u8bef\u3001\u4e0d\u5b8c\u6574\u5185\u5bb9\u6216\u8fc7\u671f\u7684\u91cd\u5b9a\u5411\u3002\n    <\/li>\n<li>\n      <strong>\u66f4\u5feb\u4f20\u64ad\u89c4\u8303\u7248\u672c\u5185\u5bb9<\/strong><br \/>\n      \u8f83\u4f4e TTL \u80fd\u8ba9\u722c\u866b\u66f4\u5feb\u8bbf\u95ee\u5230\u65e5\u672c\u65b0\u90e8\u7f72\uff0c\u5305\u62ec\u4f60\u5728\u8fd9\u6b21\u8fc1\u79fb\u4e2d\u987a\u5e26\u4e0a\u7ebf\u7684\u6027\u80fd\u4f18\u5316\u6216\u7ed3\u6784\u91cd\u6784\u3002\n    <\/li>\n<li>\n      <strong>\u7a33\u5b9a\u6027\u4f5c\u4e3a\u6392\u540d\u4fe1\u53f7<\/strong><br \/>\n      \u957f\u671f\u6765\u770b\uff0c\u66f4\u5c11\u7684\u65ad\u7ebf\u548c\u91cd\u8bd5\u610f\u5473\u7740\u66f4\u4f4e\u7684\u8df3\u51fa\u7387\u4ee5\u53ca\u66f4\u5065\u5eb7\u7684\u7528\u6237\u884c\u4e3a\u753b\u50cf\uff0c\u800c\u8fd9\u4e9b\u4f1a\u95f4\u63a5\u5730\u5f3a\u5316\u641c\u7d22\u8868\u73b0\u3002([dns.com](https:\/\/www.dns.com\/en\/supports\/2735.html?utm_source=openai))\n    <\/li>\n<\/ul>\n<p>\n    \u7b80\u800c\u8a00\u4e4b\uff0c\u6b63\u786e\u89c4\u5212 TTL \u662f\u6280\u672f SEO \u536b\u751f\u7684\u4e00\u90e8\u5206\uff1a\u5b83\u4f1a\u5728\u4f60\u8fdb\u884c\u91cd\u5927\u57fa\u7840\u8bbe\u65bd\u53d8\u66f4\u65f6\uff0c\u76f4\u63a5\u5220\u9664\u4e00\u6574\u7c7b\u53ef\u4ee5\u907f\u514d\u7684\u566a\u58f0\u3002\n  <\/p>\n<h2><strong>11. \u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\u7684\u793a\u4f8b\u67b6\u6784<\/strong><\/h2>\n<\/h2>\n<p>\n    \u4e3a\u4e86\u8ba9\u8fd9\u4e9b\u5185\u5bb9\u4e0d\u90a3\u4e48\u62bd\u8c61\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u5178\u578b\u67b6\u6784\uff1a\u4e00\u4e2a\u516c\u7f51\u57df\u540d\u3001\u4e00\u5c42\u8d1f\u8f7d\u5747\u8861\u3001\u591a\u53f0\u5e94\u7528\u670d\u52a1\u5668\u548c\u4e00\u5957\u6258\u7ba1\u6570\u636e\u5e93\u3002\u4f60\u8981\u4ece\u4e00\u4e2a\u533a\u57df\u8fc1\u79fb\u5230\u53e6\u4e00\u4e2a\u533a\u57df\uff0c\u65b0\u7684\u533a\u57df\u7531\u63d0\u4f9b\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u670d\u52a1\u7684\u5382\u5546\u652f\u6491\u3002\n  <\/p>\n<ul>\n<li><strong>\u5916\u90e8 DNS<\/strong> \u5c06 <code>app.example.com<\/code> \u6307\u5411\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<li><strong>\u8d1f\u8f7d\u5747\u8861<\/strong> \u5c06\u6d41\u91cf\u5206\u53d1\u5230\u591a\u53f0\u5e94\u7528\u8282\u70b9\u3002<\/li>\n<li><strong>\u6570\u636e\u5e93<\/strong> \u590d\u5236\u5230\u65e5\u672c\u7684\u65b0\u5b9e\u4f8b\u3002<\/li>\n<li><strong>\u9759\u6001\u8d44\u6e90<\/strong> \u7f6e\u4e8e\u81ea\u5e26 DNS \u903b\u8f91\u7684 CDN \u4e4b\u540e\u3002<\/li>\n<\/ul>\n<p>\n    \u5728\u8fd9\u6837\u7684\u573a\u666f\u91cc\uff0c\u4f60\u5f80\u5f80\u53ef\u4ee5\u5728\u7b2c\u4e00\u9636\u6bb5\u907f\u514d\u76f4\u63a5\u4fee\u6539\u7528\u6237\u53ef\u89c1\u7684\u57df\u540d\u3002\u66f4\u597d\u7684\u505a\u6cd5\u662f\uff1a\n  <\/p>\n<ol>\n<li>\u5148\u5728\u65e5\u672c\u642d\u597d\u4e00\u5957\u5e73\u884c\u6808\uff0c\u4f7f\u7528\u5355\u72ec\u7684\u5185\u90e8\u4e3b\u673a\u540d\u3002<\/li>\n<li>\u5728\u5916\u90e8\u540d\u79f0\u4ecd\u7136\u4fdd\u6301\u9ad8 TTL \u65f6\uff0c\u540c\u6b65\u5e76\u4fdd\u6301\u6570\u636e\u4e00\u81f4\u3002<\/li>\n<li>\u63d0\u524d\u53ea\u7ed9\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u540d\u79f0\u964d\u4f4e TTL\u3002<\/li>\n<li>\u5272\u63a5\u65f6\uff0c\u5c06\u8fd9\u6761\u8bb0\u5f55\u6539\u6307\u5411\u65e5\u672c\u7684\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<li>\u5982\u6709\u9700\u8981\uff0c\u53ef\u4ee5\u901a\u8fc7\u8d1f\u8f7d\u5747\u8861\u7b56\u7565\u6e10\u8fdb\u5730\u63d0\u9ad8\u65e5\u672c\u6d41\u91cf\u5360\u6bd4\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u6027 DNS \u7ffb\u8f6c\u5168\u90e8\u6d41\u91cf\u3002<\/li>\n<\/ol>\n<p>\n    \u8fd9\u6837\u53ef\u4ee5\u663e\u8457\u7f29\u5c0f\u7206\u70b8\u534a\u5f84\uff1a\u4f60\u53ea\u9700\u8981\u5728\u4e00\u4e2a\u4e2d\u5fc3\u8def\u7531\u51b3\u7b56\u70b9\u4e0a\u505a\u9009\u62e9\uff0c\u5e76\u7528\u4e00\u4e2a\u7cbe\u5fc3\u8bbe\u7f6e\u7684 TTL \u548c\u6e05\u6670\u7684\u56de\u6eda\u8def\u5f84\u6765\u4fdd\u62a4\u5b83\uff0c\u800c\u4e0d\u662f\u540c\u65f6\u64cd\u4f5c\u4e00\u6574\u7247\u8bb0\u5f55\u77e9\u9635\u3002\n  <\/p>\n<h2><strong>12. \u7528\u56fe\u50cf\u5316\u89c6\u89d2\u7406\u89e3\uff1a\u4ece\u957f TTL \u6df7\u4e71\u5230\u77ed TTL \u53ef\u63a7<\/strong><\/h2>\n<\/h2>\n<p>\n    \u4e00\u4e2a\u7b80\u5355\u7684\u5fc3\u667a\u56fe\u53ef\u4ee5\u5e2e\u4f60\u52a0\u6df1\u76f4\u89c9\u3002\u60f3\u8c61\u4e24\u6761\u76f8\u4e92\u4ea4\u53c9\u7684\u66f2\u7ebf\uff1a\u4e00\u6761\u4ee3\u8868\u4ecd\u7136\u6253\u5230\u65e7\u6e90\u7ad9\u7684\u6d41\u91cf\uff0c\u53e6\u4e00\u6761\u4ee3\u8868\u6253\u5230\u65e5\u672c\u65b0\u6e90\u7ad9\u7684\u6d41\u91cf\uff0c\u6a2a\u8f74\u662f\u65f6\u95f4\u3002\n  <\/p>\n<p>\n    <img decoding=\"async\" src=\"japan-server-migration-dns-ttl.png\" alt=\"\u5c55\u793a\u7f51\u7ad9\u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\u65f6\uff0cDNS TTL \u8c03\u6574\u4e0b\u65e7\u6e90\u7ad9\u548c\u65b0\u6e90\u7ad9\u6d41\u91cf\u4ea4\u53c9\u8fc7\u7a0b\u7684\u6d41\u91cf\u66f2\u7ebf\u793a\u610f\u56fe\" \/>\n  <\/p>\n<p>\n    \u5728\u975e\u5e38\u957f\u7684 TTL \u4e0b\uff0c\u8fd9\u4e24\u6761\u7ebf\u4ea4\u53c9\u5f97\u53c8\u6162\u53c8\u4e71\uff1a\u6709\u7684\u5ba2\u6237\u7aef\u5f88\u65e9\u5207\u6362\uff0c\u6709\u7684\u5f88\u665a\u624d\u5207\u6362\uff0c\u4ea4\u53e0\u533a\u57df\u975e\u5e38\u5bbd\u3002\u800c\u5728\u7cbe\u5fc3\u89c4\u5212\u3001\u5728\u5272\u63a5\u524d\u540e\u6570\u5c0f\u65f6\u5185\u4f7f\u7528\u8f83\u77ed TTL \u7684\u60c5\u51b5\u4e0b\uff0c\u4ea4\u53c9\u4f1a\u53d8\u5f97\u5f88\u9661\uff1a\u5927\u90e8\u5206\u7528\u6237\u4f1a\u5728\u4e00\u4e2a\u7d27\u51d1\u7a97\u53e3\u5185\u5b8c\u6210\u8fc1\u79fb\uff0c\u4ea4\u53e0\u533a\u57df\u663e\u8457\u6536\u7a84\u3002\u4f60\u4ecd\u7136\u9700\u8981\u5904\u7406\u6781\u5c11\u6570\u201c\u6f0f\u7f51\u4e4b\u9c7c\u201d\uff0c\u4f46\u5b83\u4eec\u5c06\u6210\u4e3a\u4f8b\u5916\uff0c\u800c\u4e0d\u662f\u5e38\u6001\u3002\n  <\/p>\n<h2><strong>13. \u4e0b\u6b21\u8fc1\u79fb\u524d\u7684\u7ec8\u6781\u68c0\u67e5\u6e05\u5355<\/strong><\/h2>\n<\/h2>\n<p>\n    \u6700\u540e\uff0c\u6211\u4eec\u6574\u7406\u4e00\u4efd\u4f60\u53ef\u4ee5\u76f4\u63a5\u5957\u7528\u5728\u65e5\u672c\u670d\u52a1\u5668\u8fc1\u79fb\u4e2d\u7684\u8fd0\u7ef4\u68c0\u67e5\u6e05\u5355\uff1a\n  <\/p>\n<ul>\n<li>\u5bfc\u51fa\u3001\u6587\u6863\u5316\u5e76\u7528\u7248\u672c\u63a7\u5236\u7ba1\u7406\u5b8c\u6574 DNS \u533a\u57df\u6587\u4ef6\u3002<\/li>\n<li>\u660e\u786e\u54ea\u4e9b\u8bb0\u5f55\u5fc5\u987b\u968f\u5e94\u7528\u4e00\u8d77\u8fc1\u79fb\u3002<\/li>\n<li>\u63d0\u524d 24\u201372 \u5c0f\u65f6\u4e3a\u8fd9\u4e9b\u8bb0\u5f55\u964d\u4f4e TTL\u3002<\/li>\n<li>\u5728\u72ec\u7acb\u73af\u5883\u4e2d\u6784\u5efa\u5e76\u9a8c\u8bc1\u65b0\u73af\u5883\u2014\u2014\u4e0d\u8981\u4f9d\u8d56\u7ebf\u4e0a\u6d41\u91cf\u6765\u6d4b\u8bd5\u3002<\/li>\n<li>\u5728\u5272\u63a5\u524d\u51bb\u7ed3\u9ad8\u98ce\u9669\u53d8\u66f4\uff0c\u5e76\u505a\u597d\u53ef\u6062\u590d\u7684\u5907\u4efd\u3002<\/li>\n<li>\u53ea\u5728\u65b0\u73af\u5883\u5df2\u5c31\u7eea\u4e14\u53d7\u76d1\u63a7\u7684\u524d\u63d0\u4e0b\u5207\u6362 DNS\u3002<\/li>\n<li>\u7d27\u76ef\u6d41\u91cf\u5206\u5e03\u3001\u89e3\u6790\u5668\u884c\u4e3a\u548c\u5e94\u7528\u6307\u6807\u3002<\/li>\n<li>\u5728\u786e\u4fe1\u8fc1\u79fb\u5f7b\u5e95\u5b8c\u6210\u524d\uff0c\u4fdd\u7559\u65e7\u73af\u5883\u7684\u53ea\u8bfb\u6216\u5907\u7528\u89d2\u8272\u3002<\/li>\n<li>\u7cfb\u7edf\u7a33\u5b9a\u540e\u518d\u628a TTL \u8c03\u56de\u66f4\u9002\u5408\u957f\u671f\u8fd0\u884c\u7684\u6570\u503c\uff0c\u4ee5\u5e73\u8861\u67e5\u8be2\u8d1f\u8f7d\u548c\u7075\u6d3b\u6027\u3002<\/li>\n<\/ul>\n<p>\n    \u53ea\u8981\u4f60\u4e0d\u518d\u628a DNS TTL \u5f53\u6210\u4e00\u4e2a\u9759\u6001\u914d\u7f6e\u9879\uff0c\u800c\u662f\u5f53\u4f5c\u63a7\u5236\u8fc1\u79fb\u52a8\u529b\u5b66\u7684\u7cbe\u7ec6\u65cb\u94ae\uff0c\u90a3\u4e48\u5207\u6362\u5230\u65e5\u672c\u670d\u52a1\u5668\u5c31\u4f1a\u53d8\u5f97\u53ef\u9884\u6d4b\u5f97\u591a\u3002\u5bf9\u4e8e\u8fd0\u8425\u6216\u4f7f\u7528\u670d\u52a1\u5668\u79df\u7528\u3001\u670d\u52a1\u5668\u6258\u7ba1\u5e73\u53f0\u7684\u5de5\u7a0b\u5e08\u6765\u8bf4\uff0c\u826f\u597d\u7684 TTL \u536b\u751f\u4e60\u60ef\u3001\u4e25\u8c28\u7684\u5206\u9636\u6bb5\u90e8\u7f72\u548c\u201c\u5f3a\u8feb\u75c7\u7ea7\u522b\u201d\u7684\u53ef\u89c2\u6d4b\u6027\uff0c\u80fd\u628a\u4e00\u6b21\u9ad8\u98ce\u9669\u7684\u5348\u591c\u8fc1\u79fb\uff0c\u53d8\u6210\u4e00\u573a\u51e0\u4e4e\u4e4f\u5473\u5230\u8ba9\u4eba\u6253\u54c8\u6b20\u7684\u5e38\u89c4\u53d8\u66f4\u3002\u800c\u53ea\u8981\u4f60\u5728\u89c4\u5212\u65f6\u8bb0\u5f97\u8fd9\u4e00\u4e32\u5173\u952e\u8bcd\uff1aDNS TTL website migration Japan server zero downtime hosting colocation\uff0c\u4f60\u5c31\u4f1a\u59cb\u7ec8\u805a\u7126\u5728\u6700\u5173\u952e\u7684\u90a3\u4e9b\u53d8\u91cf\u4e0a\u3002\n  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u4f60\u66fe\u7ecf\u76ef\u7740 traceroute \u53d1\u5446\uff0c\u60f3\u4e0d\u660e\u767d\u4e3a\u4ec0\u4e48\u5728\u4f60\u201c\u5207\u6362\u4e86 DNS\u201d \u5f88\u4e45\u4e4b\u540e\uff0c\u4ecd\u7136\u8fd8\u6709\u7528\u6237\u6253\u5230\u65e7 IP\uff0c\u90a3\u8fd9\u7bc7\u6587\u7ae0\u5c31\u662f\u4e3a\u4f60\u51c6\u5907\u7684\u3002\u6211\u4eec\u4f1a\u62c6\u89e3\u5728\u4f60\u8fc1\u79fb\u7f51\u7ad9\uff08\u7279\u522b\u662f\u628a\u4e1a\u52a1\u8fc1\u79fb\u5230\u65e5\u672c\u670d\u52a1\u5668\uff09\u65f6\uff0c\u89e3\u6790\u5668\u548c\u7f13\u5b58\u5185\u90e8\u7a76\u7adf\u53d1\u751f\u4e86\u4ec0\u4e48\uff0c\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u964d\u4f4e DNS TTL 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