{"id":33191,"date":"2026-09-14T10:00:00","date_gmt":"2026-09-14T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=33191"},"modified":"2026-09-16T19:57:26","modified_gmt":"2026-09-16T11:57:26","slug":"server-migration-dns-ttl","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/server-migration-dns-ttl\/","title":{"rendered":"\u7f51\u7ad9\u670d\u52a1\u5668\u8fc1\u79fb\u4e0d\u505c\u673a\uff1aDNS TTL 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\u7f13\u5b58\u5206\u5c42\u793a\u610f\uff1a\u6d4f\u89c8\u5668\u3001\u672c\u5730\u89e3\u6790\u3001\u8fd0\u8425\u5546\u4e0e\u6839\u670d\u52a1\u5668\u9010\u5c42\u7f13\u5b58\u89e3\u6790\u8bb0\u5f55\" loading=\"lazy\" \/><\/p>\n<p>\u6240\u4ee5\u8981\u5b9e\u73b0\u4e0d\u505c\u673a\uff0c\u6838\u5fc3\u601d\u8def\u662f\u4e24\u5c42\u914d\u5408\uff1a\u7b2c\u4e00\uff0c\u63d0\u524d\u628a TTL \u8c03\u4f4e\uff0c\u7f29\u77ed\u65e7\u7f13\u5b58\u7684\u5b58\u6d3b\u65f6\u95f4\uff1b\u7b2c\u4e8c\uff0c\u7528\u7070\u5ea6\u5207\u6362\u7684\u65b9\u5f0f\uff0c\u8ba9\u65b0\u65e7\u4e24\u4e2a\u670d\u52a1\u5668\u5e76\u884c\u8fd0\u884c\u4e00\u6bb5\u65f6\u95f4\uff0c\u800c\u4e0d\u662f\u5728\u540c\u4e00\u65f6\u523b\u5f7b\u5e95\u5207\u6362\u3002\u4e0b\u9762\u5206\u522b\u5c55\u5f00\u8fd9\u4e24\u6b65\u600e\u4e48\u505a\u3002\u5982\u679c\u4f60\u521a\u5f00\u59cb\u89c4\u5212\u65b0\u673a\u623f\uff0c\u4e5f\u53ef\u4ee5\u5148\u53c2\u8003\u6211\u4eec\u6574\u7406\u7684<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e\u4e0e\u9009\u578b\u6307\u5357<\/a>\uff0c\u628a\u65b0\u73af\u5883\u7684\u57fa\u7840\u6253\u597d\u3002<\/p>\n<h2>\u8fc1\u79fb\u524d\u7684\u51c6\u5907\uff1a\u628a TTL \u8c03\u4f4e\u5e76\u8dd1\u987a\u65b0\u73af\u5883<\/h2>\n<p>\u6b63\u5f0f\u7684\u8fc1\u79fb\u52a8\u4f5c\u4ece\u964d\u4f4e TTL \u5f00\u59cb\u3002\u64cd\u4f5c\u4e0a\uff0c\u4f60\u9700\u8981\u5728\u57df\u540d\u89e3\u6790\u670d\u52a1\u5546\u7684\u7ba1\u7406\u540e\u53f0\uff0c\u628a\u4f60\u9700\u8981\u8fc1\u79fb\u7684\u8fd9\u6761 A \u8bb0\u5f55\uff08\u4ee5\u53ca\u53ef\u80fd\u7528\u5230\u7684 CNAME\u3001MX \u7b49\u5728\u57df\u540d\u7cfb\u7edf\u91cc\u7528\u4e8e\u90ae\u4ef6\u8def\u7531\u7684\u89e3\u6790\u8bb0\u5f55\uff09\u7684 TTL \u503c\uff0c\u4ece\u9ed8\u8ba4\u7684 3600 \u79d2\u751a\u81f3 86400 \u79d2\uff0c\u8c03\u4f4e\u5230 300 \u79d2\u6216\u66f4\u4f4e\u3002\u8fd9\u91cc\u7ed9\u51fa\u5e38\u89c1 TTL \u6863\u4f4d\u4e0e\u6548\u679c\u53c2\u8003\uff1a<\/p>\n<ul>\n<li>3600 \u79d2\uff081 \u5c0f\u65f6\uff09\uff1a\u5e38\u89c4\u9ed8\u8ba4\u503c\uff0c\u9002\u5408\u7a33\u5b9a\u4e0d\u6539\u52a8\u7684\u60c5\u51b5<\/li>\n<li>300 \u79d2\uff085 \u5206\u949f\uff09\uff1a\u8fc1\u79fb\u524d\u4f7f\u7528\uff0c\u7edd\u5927\u591a\u6570\u7f13\u5b58\u4e00\u5c0f\u65f6\u5185\u4f1a\u5237\u65b0<\/li>\n<li>60 \u79d2\uff081 \u5206\u949f\uff09\uff1a\u9002\u5408\u4e34\u8fd1\u5207\u6362\u7a97\u53e3\uff0c\u6536\u655b\u901f\u5ea6\u6700\u5feb<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f\uff0cTTL \u8c03\u4f4e\u5e76\u4e0d\u4f1a\u8ba9\u6240\u6709\u7f13\u5b58\u7acb\u523b\u5931\u6548\uff0c\u5b83\u53ea\u5f71\u54cd\u201c\u751f\u6548\u4e4b\u540e\u65b0\u4ea7\u751f\u7684\u7f13\u5b58\u201d\u3002\u6240\u4ee5\u6b63\u786e\u505a\u6cd5\u662f\uff1a\u81f3\u5c11\u63d0\u524d\u4e00\u4e2a\u5b8c\u6574\u7684 TTL \u5468\u671f\uff08\u5efa\u8bae 24 \u5c0f\u65f6\u4ee5\u4e0a\uff09\u628a TTL \u8c03\u4f4e\uff0c\u8ba9\u5168\u7f51\u7f13\u5b58\u9010\u6b65\u5237\u65b0\uff0c\u518d\u8fdb\u5165\u5207\u6362\u9636\u6bb5\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u65b0\u670d\u52a1\u5668\u8981\u5e76\u884c\u5b8c\u6210\u73af\u5883\u642d\u5efa\uff0c\u5305\u62ec\u540c\u6837\u7684 Web \u670d\u52a1\u3001\u6570\u636e\u5e93\u3001PHP \u6216 Java \u8fd0\u884c\u65f6\u4e0e\u5e94\u7528\u6587\u4ef6\uff0c\u5e76\u7528\u53ea\u8bfb\u65b9\u5f0f\u5bfc\u5165\u4e00\u4efd\u6570\u636e\u5feb\u7167\u505a\u9a8c\u8bc1\u3002\u4f60\u53ef\u4ee5\u628a\u65b0\u670d\u52a1\u5668\u653e\u5728\u5185\u7f51\u6216\u901a\u8fc7 hosts \u4e34\u65f6\u7ed1\u5b9a\u57df\u540d\u6765\u6d4b\u8bd5\uff0c\u786e\u8ba4\u524d\u53f0\u9875\u9762\u3001\u540e\u53f0\u767b\u5f55\u548c\u5173\u952e\u63a5\u53e3\u90fd\u6b63\u5e38\uff0c\u518d\u8c08\u5207\u6362\u3002<\/p>\n<h2>\u7070\u5ea6\u5207\u6362\uff1a\u8ba9\u65b0\u65e7\u4e24\u7ad9\u5e76\u884c\u8fd0\u884c\u9010\u6b65\u653e\u91cf<\/h2>\n<p>\u73af\u5883\u5c31\u7eea\u3001TTL \u5df2\u8c03\u4f4e\u4e4b\u540e\uff0c\u8fdb\u5165\u7070\u5ea6\u5207\u6362\u3002\u8fd9\u4e00\u6b65\u7684\u6838\u5fc3\u662f\u201c\u4e0d\u4e00\u6b21\u6027\u6539\u6b7b\u201d\uff0c\u800c\u662f\u8ba9\u65b0\u670d\u52a1\u5668\u5148\u627f\u63a5\u4e00\u90e8\u5206\u6d41\u91cf\uff0c\u89c2\u5bdf\u7a33\u5b9a\u540e\u518d\u6269\u5927\u3002\u5e38\u89c1\u7684\u5b9e\u73b0\u65b9\u5f0f\u6709\u4e09\u79cd\uff0c\u4f60\u53ef\u4ee5\u6309\u56e2\u961f\u80fd\u529b\u9009\u62e9\uff1a<\/p>\n<ul>\n<li>\u4f4e\u6d41\u91cf\u5206\u7247\uff1a\u628a\u89e3\u6790\u8bb0\u5f55\u540c\u65f6\u6307\u5411\u65b0\u65e7\u4e24\u4e2a IP\uff0c\u6743\u91cd\u5148\u8bbe\u4e3a 1:9 \u6216 2:8\uff0c\u8ba9\u5c11\u91cf\u6d41\u91cf\u5148\u5230\u65b0\u670d\u52a1\u5668\u9a8c\u8bc1<\/li>\n<li>\u8d1f\u8f7d\u5747\u8861\u5f15\u6d41\uff1a\u5982\u679c\u65b0\u8001\u90fd\u5728\u540c\u4e00\u5957\u8d1f\u8f7d\u5747\u8861\u5668\u540e\u9762\uff0c\u76f4\u63a5\u8c03\u6574\u540e\u7aef\u670d\u52a1\u5668\u6743\u91cd\uff0c\u4ece 0 \u9010\u6b65\u52a0\u5230 100<\/li>\n<li>\u6309\u533a\u57df\u7070\u5ea6\uff1a\u5728\u652f\u6301 GeoDNS \u6216\u5206\u7ebf\u8def\u89e3\u6790\u7684\u670d\u52a1\u5546\u4e0a\uff0c\u5148\u53ea\u628a\u67d0\u4e00\u5730\u533a\u7684\u6d41\u91cf\u5207\u5230\u65b0\u8282\u70b9\uff0c\u5176\u4f59\u5730\u533a\u4fdd\u6301\u65e7\u8282\u70b9<\/li>\n<\/ul>\n<p>\u65e0\u8bba\u7528\u54ea\u79cd\u65b9\u5f0f\uff0c\u7070\u5ea6\u9636\u6bb5\u7684\u65f6\u957f\u901a\u5e38\u5efa\u8bae\u62c9\u5230\u51e0\u5c0f\u65f6\u5230\u4e00\u5929\u3002\u8fd9\u6bb5\u65f6\u95f4\u91cc\u8981\u91cd\u70b9\u89c2\u5bdf\u65b0\u670d\u52a1\u5668\u7684\u9519\u8bef\u65e5\u5fd7\u3001CPU 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