{"id":37003,"date":"2026-11-05T16:04:34","date_gmt":"2026-11-05T08:04:34","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/cdn-cache-ttl-vs-dns-ttl-on-japan-servers\/"},"modified":"2026-11-05T16:17:01","modified_gmt":"2026-11-05T08:17:01","slug":"cdn-cache-ttl-vs-dns-ttl-on-japan-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/cdn-cache-ttl-vs-dns-ttl-on-japan-servers\/","title":{"rendered":"CDN \u5feb\u53d6 TTL \u8207 DNS TTL \u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u7684\u5dee\u7570"},"content":{"rendered":"<p>\n    \u5982\u679c\u4f60\u7684\u65e5\u5e38\u5de5\u4f5c\u5c31\u662f\u76ef\u5ef6\u9072\u66f2\u7dda\u3001\u770b\u5404\u7a2e\u6a19\u982d\u6b04\u4f4d\uff0c\u90a3\u4f60\u5f88\u53ef\u80fd\u5df2\u7d93\u548c TTL \u6253\u904e\u7121\u6578\u6b21\u4ea4\u9053\uff0c\u537b\u4ecd\u7136\u80fd\u5728\u751f\u7522\u74b0\u5883\u88e1\u770b\u5230\u5b83\u88ab\u5404\u7a2e\u8aa4\u7528\u3002\u672c\u6587\u5beb\u7d66\u5728<br \/>\n    <a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/tokyo\/cn2\/\" target=\"_blank\">\u65e5\u672c\u4f3a\u670d\u5668<\/a><br \/>\n    \u4e0a\u8dd1\u696d\u52d9\u7684\u5de5\u7a0b\u5e2b\uff0c\u5e0c\u671b\u5e6b\u4f60\u7cbe\u6e96\u638c\u63a7\u4f4d\u5143\u5982\u4f55\u5728\u7db2\u8def\u4e2d\u6d41\u52d5\u3001\u53c8\u5728\u4ec0\u9ebc\u4f4d\u7f6e\u88ab\u5feb\u53d6\u3002\u6211\u5011\u6703\u7d50\u5408\u771f\u5be6\u4e16\u754c\u4e2d CDN \u5feb\u53d6\u548c DNS \u89e3\u6790\u5668\u7684\u884c\u70ba\uff0c\u518d\u628a\u5b83\u5011\u548c\u53ef\u89c0\u6e2c\u6027\u3001\u6545\u969c\u5207\u63db\u4ee5\u53ca SEO \u95dc\u806f\u8d77\u4f86\u3002\u5c0d\u641c\u5c0b\u5f15\u64ce\u4e5f\u597d\uff0c\u5c0d\u4eba\u985e\u8b80\u8005\u4e5f\u597d\uff0c\u9019\u7bc7\u6587\u7ae0\u7684\u7126\u9ede\u90fd\u975e\u5e38\u660e\u78ba\uff1aCDN \u5feb\u53d6 TTL\u3001DNS TTL \u5dee\u7570\u3001\u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\uff0c\u4ee5\u53ca\u9019\u4e9b\u7d44\u4ef6\u5728\u9ad8\u8ca0\u8f09\u4e0b\u662f\u5982\u4f55\u76f8\u4e92\u4f5c\u7528\u7684\u3002\n  <\/p>\n<h2><strong>1. \u5fc3\u667a\u6a21\u578b\uff1a\u5f04\u6e05\u300ctime to live\u300d\u7684\u771f\u6b63\u542b\u7fa9<\/strong><\/h2>\n<p>\n    \u5728\u958b\u59cb\u5340\u5206 CDN \u5c64\u548c DNS \u89e3\u6790\u5c64\u4e4b\u524d\uff0c\u5148\u7d71\u4e00\u4e00\u4e0b\u5c0d TTL \u7684\u5fc3\u667a\u6a21\u578b\u6703\u66f4\u6709\u5e6b\u52a9\u3002\u5728\u5927\u591a\u6578 Web \u6280\u8853\u68e7\u4e2d\uff0cTTL \u5176\u5be6\u5c31\u662f\u4e00\u500b\u4ee5\u79d2\u70ba\u55ae\u4f4d\u7684\u6574\u6578\uff0c\u5b83\u544a\u8a34\u67d0\u500b\u5feb\u53d6\u5143\u4ef6\uff1a\u4e00\u6bb5\u7279\u5b9a\u7684\u8cc7\u8a0a\u5728\u591a\u9577\u6642\u9593\u5167\u53ef\u4ee5\u88ab\u8996\u70ba\u300c\u65b0\u9bae\u300d\u3002\u4e00\u65e6\u5012\u6578\u6b78\u96f6\uff0c\u5feb\u53d6\u5c31\u6703\u628a\u9019\u689d\u7d00\u9304\u8996\u70ba\u904e\u671f\uff0c\u5fc5\u9808\u91cd\u65b0\u9a57\u8b49\uff08revalidate\uff09\u6216\u5411\u4e0a\u6e38\u91cd\u65b0\u53d6\u5f97\u8cc7\u6599\u3002\n  <\/p>\n<ul>\n<li>\n      \u5728 HTTP \u5feb\u53d6\u4e2d\uff0cTTL \u901a\u5e38\u7531\u8af8\u5982 <code>Cache-Control: max-age=3600<\/code> \u9019\u6a23\u7684\u6307\u4ee4\u63a8\u5c0e\u51fa\u4f86\uff0c\u6216\u8005\u4f86\u81ea\u4e00\u500b\u660e\u78ba\u7684\u5230\u671f\u6642\u9593\u6233\u3002\n    <\/li>\n<li>\n      \u5728 DNS \u4e2d\uff0cTTL \u662f\u6bcf\u689d\u8cc7\u6e90\u7d00\u9304\u4e0a\u7684\u4e00\u500b\u6b04\u4f4d\uff0c\u7528\u4f86\u544a\u8a34\u905e\u8ff4\u89e3\u6790\u5668\uff1a\u5b83\u53ef\u4ee5\u5728\u672c\u6a5f\u8a18\u61b6\u9ad4\u4e2d\u91cd\u8907\u4f7f\u7528\u9019\u689d\u5c0d\u61c9\u95dc\u4fc2\u591a\u9577\u6642\u9593\uff0c\u7136\u5f8c\u624d\u9700\u8981\u518d\u6b21\u53bb\u6b0a\u5a01 DNS \u4f3a\u670d\u5668\u67e5\u8a62\u3002\n    <\/li>\n<li>\n      \u5728\u5c01\u5305\u5c64\uff0c\u4e00\u4e9b\u5354\u5b9a\u4e5f\u651c\u5e36\u57fa\u65bc\u300c\u8df3\u6578\u300d\u7684 TTL\uff0c\u4f46\u5c0d Web \u904b\u7dad\u4f86\u8aaa\uff0c\u6211\u5011\u4e3b\u8981\u95dc\u5fc3\u7684\u662f\u300c\u5feb\u53d6\u65b0\u9bae\u5ea6\u300d\uff0c\u800c\u4e0d\u662f\u8def\u7531\u8ff4\u5708\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u5c0d\u5de5\u7a0b\u5e2b\u4f86\u8aaa\uff0c\u66f4\u95dc\u9375\u7684\u7d04\u675f\u5728\u65bc\uff1a\u5f9e\u700f\u89bd\u5668\u5230\u65e5\u672c\u6a5f\u623f\u7684\u8def\u5f91\u4e0a\uff0c\u53ef\u4ee5\u540c\u6642\u5b58\u5728\u591a\u500b\u5404\u81ea\u53d7 TTL \u63a7\u5236\u7684\u5c64\u7d1a\uff1a\u700f\u89bd\u5668\u5feb\u53d6\u3001CDN \u908a\u7de3\u7bc0\u9ede\u3001ISP \u89e3\u6790\u5668\u3001\u4f01\u696d\u5167\u90e8\u7684 DNS \u8f49\u9001\u5668\u7b49\u7b49\u3002\u4f60\u6539\u52d5\u5176\u4e2d\u67d0\u4e00\u5c64\u7684 TTL\uff0c\u4e26\u4e0d\u6703\u300c\u9b54\u6cd5\u822c\u5730\u300d\u6539\u5beb\u5176\u4ed6\u5c64\u7684\u884c\u70ba\u3002\n  <\/p>\n<h2><strong>2. CDN \u5feb\u53d6 TTL\uff1a\u4f60\u5167\u5bb9\u5728\u908a\u7de3\u7bc0\u9ede\u4e0a\u7684\u526f\u672c<\/strong><\/h2>\n<p>\n    CDN\uff08\u5167\u5bb9\u50b3\u905e\u7db2\u8def\uff09\u6703\u5728\u908a\u7de3\u7bc0\u9ede\u5feb\u53d6\u4f60\u7684\u56de\u61c9\u526f\u672c\u3002\u5c0d\u4e00\u500b\u9762\u5411\u65e5\u672c\u4f7f\u7528\u8005\u7684\u5c08\u6848\u4f86\u8aaa\uff0c\u9019\u4e9b\u908a\u7de3\u7bc0\u9ede\u7684 PoP \u53ef\u80fd\u4f4d\u65bc\u6771\u4eac\u3001\u5927\u962a\u4ee5\u53ca\u5468\u908a\u7684\u4e9e\u6d32\u6a1e\u7d10\u57ce\u5e02\u3002CDN \u5feb\u53d6 TTL \u6c7a\u5b9a\u4e86\u6bcf\u4e00\u500b\u908a\u7de3\u7bc0\u9ede\u53ef\u4ee5\u5728\u591a\u9577\u6642\u9593\u5167\u76f4\u63a5\u4f7f\u7528\u672c\u5730\u5feb\u53d6\u7269\u4ef6\uff0c\u800c\u4e0d\u5fc5\u56de\u6e90\u5230\u4f60\u5728\u65e5\u672c\u6a5f\u6ac3\u4e2d\u7684 origin\u3002\n  <\/p>\n<p>\n    \u5728\u5927\u591a\u6578 CDN \u4e2d\uff0c\u6709\u6548\u7684\u5feb\u53d6\u751f\u547d\u9031\u671f\u662f\u300c\u6e90\u7ad9\u6a19\u982d + \u5e73\u53f0\u898f\u5247\u300d\u5171\u540c\u4f5c\u7528\u7684\u7d50\u679c\uff1a\n  <\/p>\n<ul>\n<li>\n      <code>Cache-Control: max-age=N<\/code> \u6c7a\u5b9a\u4e86\u56de\u61c9\u5728\u5305\u542b\u700f\u89bd\u5668\u5728\u5167\u7684\u6240\u6709\u5feb\u53d6\u4e2d\u53ef\u4ee5\u505c\u7559\u591a\u9577\u6642\u9593\u3002\n    <\/li>\n<li>\n      <code>Cache-Control: s-maxage=N<\/code> \u53ef\u4ee5\u5c08\u9580\u70ba\u300c\u5171\u4eab\u5feb\u53d6\u300d\uff08\u4f8b\u5982 CDN\uff09\u8986\u84cb\u4e0a\u8ff0\u6578\u503c\uff0c\u540c\u6642\u7d66\u672c\u5730\u7aef\u4fdd\u7559\u4e0d\u540c\u7684\u7b56\u7565\u3002\n    <\/li>\n<li>\n      CDN \u5f8c\u53f0\u63a7\u5236\u53f0\u901a\u5e38\u9084\u6709\u81ea\u5df1\u7684\u6700\u5c0f\u3001\u9810\u8a2d\u548c\u6700\u5927 TTL \u9650\u5236\uff0c\u7528\u4f86\u5c0d\u9019\u4e9b\u6a19\u982d\u8a2d\u4e00\u500b\u4e0a\u9650\u548c\u4e0b\u9650\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u5f9e\u908a\u7de3\u7bc0\u9ede\u7684\u8996\u89d2\u770b\uff0cTTL \u7684\u4e3b\u8981\u76ee\u6a19\u662f\u6e1b\u5c11\u56de\u6e90\u8acb\u6c42\u7684\u6b21\u6578\uff0c\u540c\u6642\u4fdd\u8b49\u5167\u5bb9\u300c\u8db3\u5920\u65b0\u9bae\u300d\u3002\u5e36\u6307\u7d0b\u7684 JavaScript \u5957\u4ef6\uff08\u4f8b\u5982\u900f\u904e\u6a94\u540d\u651c\u5e36 hash\uff09\u901a\u5e38\u53ef\u4ee5\u5bb9\u5fcd\u5f88\u9577\u7684 TTL\uff0c\u56e0\u70ba\u6bcf\u6b21\u767c\u7248\u90fd\u6703\u7522\u751f\u5168\u65b0\u7684 URL\u3002\u800c\u6309\u7167\u4f7f\u7528\u8005 ID \u7dad\u5ea6\u5feb\u53d6\u7684 API \u56de\u61c9\uff0c\u5f80\u5f80\u8981\u561b\u5b8c\u5168\u8df3\u904e\u5feb\u53d6\uff0c\u8981\u561b\u53ea\u5728\u6975\u77ed\u6642\u9593\u8996\u7a97\u5167\u5feb\u53d6\u3002\n  <\/p>\n<h2><strong>3. DNS TTL\uff1a\u7db2\u57df\u540d\u7a31\u6700\u7d42\u6307\u5411\u54ea\u88e1<\/strong><\/h2>\n<p>\n    DNS \u5feb\u53d6\u4f4d\u65bc\u5b8c\u5168\u4e0d\u540c\u7684\u67b6\u69cb\u5c64\u3002DNS \u89e3\u6790\u5668\u4e26\u4e0d\u6703\u5feb\u53d6 HTML \u6216 JSON\uff0c\u800c\u662f\u5feb\u53d6\u8af8\u5982\u300c<code>api.example.jp<\/code> \u2192 IPv4 \u4f4d\u5740\u300d\u6216\u8005\u300c<code>static.example.jp<\/code> \u2192 CDN \u4e3b\u6a5f\u540d\u7a31\u300d\u9019\u6a23\u7684\u5c0d\u61c9\u95dc\u4fc2\u3002\u6bcf\u689d\u5c0d\u61c9\u95dc\u4fc2\u90fd\u6703\u5e36\u4e00\u500b TTL\uff0c\u6307\u660e\u89e3\u6790\u5668\u53ef\u4ee5\u5728\u591a\u9577\u6642\u9593\u5167\u91cd\u8907\u4f7f\u7528\u9019\u689d\u7d00\u9304\u3002\n  <\/p>\n<p>\n    \u751f\u547d\u9031\u671f\u5927\u81f4\u5982\u4e0b\uff1a\n  <\/p>\n<ol>\n<li>\n      \u7528\u6236\u7aef\u5411\u81ea\u5df1\u8a2d\u5b9a\u597d\u7684\u89e3\u6790\u5668\u767c\u8d77\u67e5\u8a62\uff08\u901a\u5e38\u662f ISP \u63d0\u4f9b\u7684\u89e3\u6790\u5668\uff0c\u6216\u516c\u5171 DNS \u670d\u52d9\uff09\u3002\n    <\/li>\n<li>\n      \u5982\u679c\u89e3\u6790\u5668\u7684\u5feb\u53d6\u88e1\u5df2\u7d93\u6709\u9019\u689d\u7d00\u9304\uff0c\u4e14 TTL \u5c1a\u672a\u904e\u671f\uff0c\u5b83\u5c31\u76f4\u63a5\u5f9e\u8a18\u61b6\u9ad4\u4e2d\u56de\u50b3\u7d50\u679c\u3002\n    <\/li>\n<li>\n      \u5982\u679c\u672c\u5730\u5feb\u53d6\u70ba\u7a7a\u6216\u5df2\u904e\u671f\uff0c\u89e3\u6790\u5668\u5c31\u6703\u6309\u7167 DNS \u5c64\u7d1a\u9010\u7d1a\u5411\u4e0a\u67e5\u627e\uff0c\u5f9e\u6b0a\u5a01 DNS \u4f3a\u670d\u5668\u53d6\u56de\u7d00\u9304\uff0c\u4e26\u9023\u540c TTL \u4e00\u8d77\u5feb\u53d6\u4e0b\u4f86\u3002\n    <\/li>\n<li>\n      \u5728\u9019\u500b TTL \u7684\u6709\u6548\u671f\u5167\uff0c\u5f8c\u7e8c\u5c0d\u540c\u4e00\u7d00\u9304\u7684\u67e5\u8a62\u90fd\u6703\u547d\u4e2d\u5feb\u53d6\uff0c\u5373\u4fbf\u6b0a\u5a01\u4f3a\u670d\u5668\u4e0a\u7684\u8cc7\u6599\u5df2\u7d93\u767c\u751f\u8b8a\u5316\u3002\n    <\/li>\n<\/ol>\n<p>\n    \u5be6\u969b\u6548\u679c\u662f\uff1a\u53ea\u8981\u67d0\u500b\u64cd\u4f5c\u727d\u6d89\u5230\u300c\u628a\u6d41\u91cf\u5f9e\u67d0\u500b\u65e5\u672c\u7bc0\u9ede\u9077\u8d70\u6216\u9077\u56de\u300d\uff0c\u771f\u6b63\u7684\u6536\u6582\u6642\u9593\u5c31\u88ab\u300c\u91ce\u5916\u74b0\u5883\u4e2d\u6700\u9577\u7684\u5feb\u53d6 TTL\u300d\u6240\u7d81\u6b7b\u3002\u4f60\u5728\u6b0a\u5a01 DNS \u4e0a\u8abf\u4f4e TTL \u53ea\u6703\u5f71\u97ff\u672a\u4f86\u7684\u65b0\u89e3\u6790\u8acb\u6c42\uff1b\u5df2\u7d93\u6309\u66f4\u9ad8 TTL \u5feb\u53d6\u4e0b\u4f86\u7684\u820a\u7d00\u9304\uff0c\u4e26\u4e0d\u6703\u88ab\u77ac\u9593\u5931\u6548\u3002\n  <\/p>\n<h2><strong>4. CDN \u5feb\u53d6 TTL vs DNS TTL\uff1a\u771f\u6b63\u7684\u5dee\u5225\u5728\u54ea\u88e1<\/strong><\/h2>\n<p>\n    \u5f88\u591a\u904b\u7dad\u624b\u518a\u6703\u628a CDN \u5feb\u53d6 TTL \u548c DNS TTL \u4e00\u80a1\u8166\u6b78\u5165\u300c\u50b3\u64ad\u5ef6\u9072\u300d\u9019\u4e00\u985e\uff0c\u9019\u662f\u6709\u98a8\u96aa\u7684\u3002\u9019\u5169\u7a2e\u8a08\u6642\u5668\u5206\u5225\u5c6c\u65bc\u622a\u7136\u4e0d\u540c\u7684\u7cfb\u7d71\uff0c\u5b83\u5011\u6709\u8457\u5404\u81ea\u7368\u7acb\u7684\u72c0\u614b\u3001\u6545\u969c\u6a21\u5f0f\u548c\u904b\u7dad\u5de5\u5177\u3002\u6e05\u695a\u5730\u628a\u5169\u8005\u5340\u5206\u958b\uff0c\u53ef\u4ee5\u5728\u4e8b\u6545\u767c\u751f\u6642\u6e1b\u5c11\u5927\u91cf\u6392\u67e5\u6642\u9593\u3002\n  <\/p>\n<ul>\n<li>\n      <strong>\u63a7\u5236\u5e73\u9762 vs \u8cc7\u6599\u5e73\u9762\uff1a<\/strong>DNS \u6c7a\u5b9a\u7528\u6236\u7aef\u8981\u628a\u6d41\u91cf\u767c\u5230\u300c\u54ea\u88e1\u300d\uff1bCDN \u5feb\u53d6\u5247\u6c7a\u5b9a\u5728 TCP\/TLS \u9023\u7dda\u5efa\u7acb\u4e4b\u5f8c\uff0c\u7528\u6236\u7aef\u5be6\u969b\u6536\u5230\u300c\u4ec0\u9ebc\u300d\u5167\u5bb9\u3002\n    <\/li>\n<li>\n      <strong>\u5f71\u97ff\u7bc4\u570d\uff1a<\/strong>\u8abf\u6574 DNS TTL \u4e3b\u8981\u6703\u5f71\u97ff\u8def\u7531\u8def\u5f91\u3001\u9077\u79fb\u6642\u9593\u8868\u4ee5\u53ca\u6545\u969c\u7684\u6ce2\u53ca\u7bc4\u570d\uff1b\u8abf\u6574 CDN TTL \u5247\u4e3b\u8981\u5f71\u97ff\u5167\u5bb9\u53ef\u80fd\u8b8a\u5f97\u591a\u820a\uff0c\u4ee5\u53ca\u65e5\u672c origin \u9700\u8981\u591a\u983b\u7e41\u5730\u89aa\u81ea\u56de\u61c9\u5b8c\u6574\u5167\u5bb9\u3002\n    <\/li>\n<li>\n      <strong>\u5931\u6548\u8207\u6e05\u5feb\u53d6\u5de5\u5177\uff1a<\/strong>CDN \u5e73\u53f0\u901a\u5e38\u63d0\u4f9b\u5feb\u53d6\u6e05\u7406\uff08cache purge\uff09API \u6216\u63a7\u5236\u53f0\u6309\u9215\uff0c\u8b93\u4f60\u7121\u9700\u7b49\u5f85 TTL \u81ea\u7136\u5230\u671f\u5c31\u80fd\u624b\u52d5\u79fb\u9664\u6307\u5b9a\u8def\u5f91\u3002\u800c\u50b3\u7d71\u7684 DNS \u89e3\u6790\u5668\u4e26\u6c92\u6709\u6a19\u6e96\u5316\u7684\u300c\u9060\u7aef\u6e05\u5feb\u53d6\u300d\u6a5f\u5236\uff0c\u4f60\u53ea\u80fd\u4f9d\u8cf4 TTL \u81ea\u7136\u904e\u671f\u4ee5\u53ca\u89e3\u6790\u5668\u81ea\u8eab\u7684\u884c\u70ba\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u76f4\u63a5\u7684\u542b\u7fa9\u662f\uff1a\u7576\u4f7f\u7528\u8005\u56de\u5831\u300c\u6211\u9019\u908a\u9084\u5728\u770b\u5230\u820a\u7248\u672c\u300d\u7684\u6642\u5019\uff0c\u4f60\u61c9\u8a72\u7b2c\u4e00\u6642\u9593\u5224\u65b7\u5b83\u5230\u5e95\u662f\u300c\u89e3\u6790\u554f\u984c\u300d\u9084\u662f\u300c\u5167\u5bb9\u5feb\u53d6\u554f\u984c\u300d\u3002\u9810\u671f IP \u4f4d\u5740\u548c traceroute \u7d50\u679c\u5c0d\u4e0d\u4e0a\uff0c\u591a\u534a\u662f DNS TTL \u7684\u934b\uff1bIP \u4f4d\u5740\u5df2\u7d93\u5c0d\u4e86\uff0c\u4f46 CSS \u6216\u9801\u9762\u7d50\u69cb\u4ecd\u7136\u662f\u820a\u7684\uff0c\u90a3\u5c31\u66f4\u50cf\u662f CDN \u5feb\u53d6 TTL \u5c0e\u81f4\u7684\u9673\u820a\u5167\u5bb9\u3002\n  <\/p>\n<h2><strong>5. \u5178\u578b\u7684\u65e5\u672c\u60c5\u5883 TTL \u8a2d\u5b9a\u6a21\u5f0f<\/strong><\/h2>\n<p>\n    \u5c0d\u65bc\u696d\u52d9\u4e3b\u8981\u90e8\u7f72\u5728\u65e5\u672c\u6a5f\u623f\u7684\u60c5\u5883\uff0c\u7db2\u8def\u5730\u7406\u5206\u5e03\u548c\u4f7f\u7528\u8005\u4f86\u6e90\u6703\u76f4\u63a5\u5f71\u97ff\u5408\u7406\u7684 TTL \u5340\u9593\u3002\u901a\u5f80\u5468\u908a\u4e9e\u6d32\u5e02\u5834\u7684\u7db2\u8def\u6642\u5ef6\u5f80\u5f80\u5df2\u7d93\u8db3\u5920\u4f4e\uff0c\u56e0\u6b64\u5c0d\u9019\u4e9b\u8fd1\u8ddd\u96e2\u4f7f\u7528\u8005\u800c\u8a00\uff0c\u6fc0\u9032\u5feb\u53d6\u7684\u91cd\u8981\u6027\u4e0d\u5982\u8de8\u6d0b\u6d41\u91cf\u90a3\u9ebc\u9ad8\uff1b\u4f46\u4f86\u81ea\u6b50\u6d32\u6216\u5317\u7f8e\u7684\u5b58\u53d6\uff0c\u4ecd\u7136\u6703\u5f9e\u7cbe\u5fc3\u8abf\u6821\u7684\u908a\u7de3\u7bc0\u9ede\u4e2d\u7372\u76ca\u826f\u591a\u3002\n  <\/p>\n<h3>5.1 CDN \u5feb\u53d6 TTL \u7d93\u9a57\u6cd5\u5247<\/h3>\n<ul>\n<li>\n      <strong>\u5e36\u7248\u672c\u865f\u7684\u975c\u614b\u8cc7\u6e90\uff1a<\/strong>\u4f8b\u5982 <code>app.4f3c2.js<\/code> \u6216 <code>styles.9b1c.css<\/code> \u9019\u985e\u5e36\u6307\u7d0b\u7684\u975c\u614b\u6a94\u6848\uff0c\u901a\u5e38\u53ef\u4ee5\u5728\u908a\u7de3\u7bc0\u9ede\u8a2d\u5b9a\u975e\u5e38\u9577\u7684 TTL\uff1a\u4e0d\u5c11\u5718\u968a\u76f4\u63a5\u62c9\u5230\u591a\u5929\u751a\u81f3\u4ee5\u6708\u8a08\u7b97\u3002\u56e0\u70ba\u4e00\u65e6\u767c\u4f48\u65b0\u7248\u672c\uff0c\u6a94\u540d\u5c31\u6703\u8b8a\u5316\uff0c\u81ea\u7136\u7e5e\u904e\u820a\u5feb\u53d6\u3002\n    <\/li>\n<li>\n      <strong>\u5076\u723e\u66f4\u65b0\u7684\u975c\u614b\u5a92\u9ad4\uff1a<\/strong>\u5982\u5546\u54c1\u5716\u7247\u3001\u6587\u4ef6 PDF \u7b49\uff0c\u8b8a\u66f4\u983b\u7387\u4e0d\u9ad8\u7684\u8cc7\u6e90\u53ef\u4ee5\u4f7f\u7528\u300c\u5c0f\u6642\u7d1a\u6216\u5929\u7d1a\u300d\u7684 TTL\uff0c\u53ea\u8981\u4f60\u6709\u4e00\u5957\u660e\u78ba\u7684\u5feb\u53d6\u5237\u65b0\uff08purge\uff09\u6d41\u7a0b\uff0c\u5728\u624b\u52d5\u66f4\u65b0\u6642\u89f8\u767c\u5373\u53ef\u3002\n    <\/li>\n<li>\n      <strong>HTML \u5165\u53e3\u9801\uff1a<\/strong>\u5c0d\u9ad8\u5ea6\u52d5\u614b\u7684\u9996\u9801\u6216\u6838\u5fc3\u843d\u5730\u9801\u800c\u8a00\uff0c\u5728 CDN \u7aef\u63a1\u7528\u8f03\u77ed\u7684\u5feb\u53d6\u6642\u9593\u53ef\u4ee5\u6e1b\u5c11\u4f7f\u7528\u8005\u6df7\u4e82\u3002\u9019\u88e1\u4e00\u822c\u4e0d\u9700\u8981\u77ed\u5230\u300c\u79d2\u7d1a\u300d\uff0c\u53ef\u4ee5\u8003\u616e\u300c\u5e7e\u5206\u9418\u7d1a\u300d\u642d\u914d\u95dc\u9375\u71df\u904b\u6d3b\u52d5\u6642\u7684\u5feb\u901f\u624b\u52d5\u6e05\u5feb\u53d6\u3002\n    <\/li>\n<li>\n      <strong>API\uff1a<\/strong>\u5c0d\u51aa\u7b49\u3001\u8b80\u591a\u5beb\u5c11\u7684\u4ecb\u9762\uff0c\u53ef\u4ee5\u5bb9\u5fcd\u5728\u5171\u4eab\u5feb\u53d6\u4e2d\u6709\u77ed\u6642\u9593\u8996\u7a97\u7684\u5feb\u53d6\uff0c\u4ee5\u964d\u4f4e\u65e5\u672c\u5f8c\u7aef\u53e2\u96c6\u7684\u58d3\u529b\u3002\u5c0d\u654f\u611f\u6216\u5f37\u4f7f\u7528\u8005\u7279\u7570\u6027\u7684\u4ecb\u9762\uff0c\u5247\u61c9\u907f\u514d\u5728\u5171\u4eab\u908a\u7de3\u5feb\u53d6\u4e2d\u88ab\u5feb\u53d6\u3002\n    <\/li>\n<\/ul>\n<h3>5.2 DNS TTL \u7d93\u9a57\u6cd5\u5247<\/h3>\n<ul>\n<li>\n      <strong>\u5e7e\u4e4e\u4e0d\u8b8a\u7684\u7d00\u9304\uff1a<\/strong>\u4f8b\u5982\u9577\u671f\u7a69\u5b9a\u6307\u5411\u6771\u4eac\u67d0\u500b\u8ca0\u8f09\u5e73\u8861\u5668\u7684\u7d00\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u300c\u5c0f\u6642\u7d1a\u300d\u7684 TTL\uff0c\u9019\u6a23\u65e2\u80fd\u6e1b\u8f15\u6b0a\u5a01 DNS \u4f3a\u670d\u5668\u7684\u67e5\u8a62\u58d3\u529b\uff0c\u4e5f\u80fd\u7565\u5fae\u964d\u4f4e\u89e3\u6790\u6642\u5ef6\u3002\n    <\/li>\n<li>\n      <strong>\u53c3\u8207\u6d41\u91cf\u8abf\u5ea6\u7684\u4e3b\u6a5f\u540d\u7a31\uff1a<\/strong>\u5982\u679c\u67d0\u689d\u7d00\u9304\u88ab\u7528\u5728\u6a6b\u8de8\u591a\u500b\u65e5\u672c\u6a5f\u623f\u6216\u5168\u7403 PoP \u7684\u4e3b\u52d5\u6d41\u91cf\u8abf\u5ea6\u4e2d\uff0c\u90a3\u9ebc\u8f03\u77ed\u7684 TTL \u80fd\u8b93\u4f60\u5728\u6545\u969c\u6216\u7dad\u8b77\u6642\u66f4\u9748\u6d3b\u5730\u8abf\u6574\u6b0a\u91cd\u548c\u6d41\u91cf\u8d70\u5411\u3002\n    <\/li>\n<li>\n      <strong>\u8a08\u756b\u5167\u9077\u79fb\uff1a<\/strong>\u5728\u5f9e\u4e00\u500b\u65e5\u672c\u6a5f\u6ac3\u9077\u5230\u53e6\u4e00\u500b\u3001\u6216\u8005\u5f9e\u820a\u7684\u4f3a\u670d\u5668\u79df\u7528\uff0f\u4f3a\u670d\u5668\u8a17\u7ba1\u670d\u52d9\u5546\u9077\u5230\u65b0\u7684\u4f9b\u61c9\u5546\u4e4b\u524d\uff0c\u63d0\u524d\u628a\u76f8\u95dc\u7d00\u9304\u7684 TTL \u964d\u5230\u5f88\u4f4e\u7684\u6578\u503c\uff0c\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u5207\u63db\u8996\u7a97\u7684\u53ef\u9810\u6e2c\u6027\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u9019\u4e9b\u53ea\u662f\u8d77\u59cb\u7bc4\u672c\uff0c\u800c\u4e0d\u662f\u786c\u6027\u898f\u5b9a\u3002\u6700\u7d42\u61c9\u8a72\u7531\u76e3\u63a7\u548c\u771f\u5be6\u4f7f\u7528\u8005\u9ad4\u9a57\uff08RUM\uff09\u8cc7\u6599\u4f86\u6307\u5c0e\u4f60\u662f\u5426\u53ef\u4ee5\u9032\u4e00\u6b65\u62c9\u9577\u6216\u7e2e\u77ed TTL\u3002\n  <\/p>\n<h2><strong>6. \u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\u8207\u4f3a\u670d\u5668\u8a17\u7ba1\u7684\u73fe\u5be6\u60c5\u6cc1<\/strong><\/h2>\n<p>\n    \u7576\u4f60\u5728\u65e5\u672c\u7684\u6a5f\u623f\u79df\u7528\u4f3a\u670d\u5668\u6216\u865b\u64ec\u5be6\u4f8b\u6642\uff0c\u4e0a\u6e38\u4f9b\u61c9\u5546\u4e00\u822c\u6703\u7528\u300chosting\u300d\u548c\u300ccolocation\u300d\u9019\u5169\u500b\u82f1\u6587\u8a5e\u4f86\u63cf\u8ff0\u81ea\u5df1\u7684\u670d\u52d9\u3002\u4f9d\u4e2d\u6587\u8853\u8a9e\uff0c\u300chosting\u300d\u5c0d\u61c9\u7684\u662f\u300c\u4f3a\u670d\u5668\u79df\u7528\u300d\uff0c\u4e5f\u5c31\u662f\u7531\u670d\u52d9\u5546\u63d0\u4f9b\u786c\u9ad4\u8cc7\u6e90\uff0c\u4f60\u6309\u914d\u7f6e\u79df\u7528\uff0c\u8207\u539f\u59cb\u7684\u300c\u4f3a\u670d\u5668\u79df\u7528\u300d\u4e00\u8a5e\u542b\u7fa9\u4e00\u81f4\uff1b\u300ccolocation\u300d\u5247\u662f\u300c\u4f3a\u670d\u5668\u8a17\u7ba1\u300d\uff0c\u4e5f\u5c31\u662f\u4f60\u81ea\u5099\u4f3a\u670d\u5668\uff0c\u628a\u6a5f\u5668\u8a17\u7ba1\u5728\u5c0d\u65b9\u6a5f\u6ac3\u88e1\u3002\u7121\u8ad6\u54ea\u7a2e\u6a21\u5f0f\uff0cDNS \u8a2d\u5b9a\u548c CDN \u5206\u767c\u7b56\u7565\u4f9d\u7136\u7531\u4f60\u81ea\u5df1\u8ca0\u8cac\u3002\n  <\/p>\n<p>\n    \u5c0d\u5728\u65e5\u672c\u9032\u884c\u5927\u898f\u6a21 Japan server hosting \u7684\u5718\u968a\u800c\u8a00\uff0c\u6d41\u91cf\u5f80\u5f80\u6703\u662f\u591a\u7a2e\u4f86\u6e90\u7684\u6df7\u5408\uff1a\n  <\/p>\n<ul>\n<li>\n      \u4f86\u81ea\u65e5\u672c\u672c\u5730 ISP \u7684\u76f4\u9023\u5b58\u53d6\uff0c\u9019\u90e8\u5206\u5f80\u8fd4\u6642\u5ef6\u5df2\u7d93\u5f88\u4f4e\u3002\n    <\/li>\n<li>\n      \u4f86\u81ea\u5468\u908a\u570b\u5bb6\u7684\u4f01\u696d\u7db2\u8def\u548c\u884c\u52d5\u71df\u904b\u5546\u7684\u8de8\u5883\u5b58\u53d6\u3002\n    <\/li>\n<li>\n      \u4f86\u81ea\u6b50\u6d32\u6216\u7f8e\u6d32\u7684\u9577\u8ddd\u96e2\u5b58\u53d6\uff0c\u5728\u9019\u4e9b\u60c5\u5883\u4e0b\uff0c\u4e00\u500b\u90e8\u7f72\u5f97\u7576\u7684\u908a\u7de3\u7bc0\u9ede\u53ef\u4ee5\u986f\u8457\u6539\u5584 TTFB\uff08\u9996\u4f4d\u5143\u7d44\u6642\u9593\uff09\u3002\n    <\/li>\n<\/ul>\n<p>\n    DNS TTL \u9700\u8981\u8db3\u5920\u77ed\uff0c\u4ee5\u4fbf\u5728\u67d0\u53f0\u8a17\u7ba1\u4f3a\u670d\u5668\u6216\u67d0\u500b\u6a5f\u6ac3\u51fa\u73fe\u6545\u969c\u6642\uff0c\u53ef\u4ee5\u5feb\u901f\u7e5e\u904e\u6216\u62bd\u7a7a\u9019\u4e00\u6279\u7bc0\u9ede\uff0c\u800c\u4e0d\u662f\u88ab\u5361\u5728\u90a3\u88e1\u6578\u5c0f\u6642\u3002CDN \u5feb\u53d6 TTL \u5247\u9700\u8981\u8db3\u5920\u9577\uff0c\u4ee5\u514d\u5728\u8de8\u5883\u9ad8\u4f75\u767c\u5b58\u53d6\u6642\uff0c\u6bcf\u4e00\u6b21\u5340\u57df\u6027\u6d41\u91cf\u9ad8\u5cf0\u90fd\u628a\u65e5\u672c origin \u76f4\u63a5\u6253\u6eff\u3002\n  <\/p>\n<h2><strong>7. \u6df7\u6dc6\u5169\u985e TTL \u5e36\u4f86\u7684\u5178\u578b\u6545\u969c\u6a21\u5f0f<\/strong><\/h2>\n<p>\n    \u7576\u65e5\u672c\u6a5f\u623f\u5728\u51cc\u6668 3 \u9ede\u767c\u751f\u4e8b\u6545\u6642\uff0c\u4f60\u80fd\u591a\u5feb\u6062\u5fa9\u670d\u52d9\uff0c\u5f88\u5927\u7a0b\u5ea6\u4e0a\u53d6\u6c7a\u65bc\u4f60\u662f\u5426\u771f\u6b63\u5206\u6e05\u4e86\u9019\u5169\u985e TTL\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5728\u4e8b\u6545\u5fa9\u76e4\u4e2d\u53cd\u8986\u51fa\u73fe\u7684\u6a21\u5f0f\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>DNS \u5207\u63db\u6642\u9593\u9060\u8d85\u9810\u671f\uff1a<\/strong>\u67d0\u689d\u7d00\u9304\u66fe\u7d93\u88ab\u8a2d\u5b9a\u6210\u300c\u4e00\u5929\u7d1a\u300d\u7684 TTL\uff0c\u5f8c\u4f86\u96d6\u7136\u5728\u5340\u57df\u6a94\u4e2d\u88ab\u8abf\u5c0f\uff0c\u4f46\u5f88\u591a\u89e3\u6790\u5668\u65e9\u5df2\u6309\u820a\u503c\u5feb\u53d6\u3002\u7b49\u5230\u7dca\u6025\u6545\u969c\u5207\u63db\u6642\uff0c\u90e8\u5206\u4f7f\u7528\u8005\u65cf\u7fa4\u9084\u6703\u6301\u7e8c\u5f88\u9577\u4e00\u6bb5\u6642\u9593\u6253\u5230\u820a IP\uff0c\u76f4\u5230\u4e4b\u524d\u90a3\u500b\u66f4\u9577\u7684 TTL \u5b8c\u6574\u8d70\u5b8c\u3002\n    <\/li>\n<li>\n      <strong>\u524d\u7aef\u300c\u534a\u66f4\u65b0\u300d\u72c0\u614b\uff1a<\/strong>HTML \u9801\u9762\u8981\u561b\u4e0d\u5728 CDN \u5feb\u53d6\u88e1\uff0c\u8981\u561b TTL \u5f88\u77ed\uff0c\u4f46\u5c0d\u61c9\u7684\u975c\u614b\u8cc7\u6e90\uff08JS\/CSS\uff09\u537b\u5728\u908a\u7de3\u88ab\u9577\u6642\u9593\u5feb\u53d6\u3002\u4e00\u6b21\u6c92\u6709\u66f4\u65b0\u8cc7\u6e90\u6307\u7d0b\uff08\u6a94\u540d\uff09\u7684\u90e8\u7f72\uff0c\u6703\u5c0e\u81f4\u7528\u6236\u7aef\u5f9e\u6b50\u6d32\u6216\u7f8e\u6d32\u7684\u67d0\u500b\u9060\u7aef\u908a\u7de3\u7bc0\u9ede\u8b80\u5230\u820a\u7248 JavaScript\uff0c\u540c\u6642\u53c8\u5f9e\u65e5\u672c origin \u62ff\u5230\u65b0\u7248 HTML\u3002\n    <\/li>\n<li>\n      <strong>\u8abf\u6574 TTL \u5c0e\u81f4 origin \u88ab\u6253\u639b\uff1a<\/strong>\u6709\u4eba\u70ba\u4e86\u300c\u63d0\u9ad8\u4e00\u81f4\u6027\u300d\u628a\u71b1\u9580 API \u5728 CDN \u4e0a\u7684\u5feb\u53d6 TTL \u964d\u5230\u5e7e\u79d2\uff0c\u7d50\u679c\u662f\u65e5\u672c origin \u53e2\u96c6\u6536\u5230\u4f86\u81ea\u5404\u500b\u908a\u7de3\u7bc0\u9ede\u7684\u56de\u6e90\u6d2a\u5cf0\uff0cCPU\u3001\u7db2\u8def\u6216\u8cc7\u6599\u5eab\u9023\u7dda\u6c60\u88ab\u4e00\u4e0b\u5b50\u6253\u6eff\u3002\n    <\/li>\n<\/ol>\n<p>\n    \u628a\u300c\u6539 DNS\u300d\u8207\u300c\u6e05 CDN \u5feb\u53d6\u300d\u62c6\u6210\u5169\u5957\u7368\u7acb\u7684\u64cd\u4f5c\u624b\u518a\uff0c\u5206\u5225\u8a2d\u8a08\u4e0d\u540c\u7684\u6309\u9215\u3001\u6b65\u9a5f\u8207\u56de\u6efe\u7b56\u7565\uff0c\u662f\u975e\u5e38\u503c\u5f97\u6295\u5165\u6642\u9593\u53bb\u505a\u7684\u4e8b\u3002\u5728\u9ad8\u58d3\u72c0\u614b\u4e0b\u628a\u5b83\u5011\u6df7\u5728\u4e00\u8d77\u51fa\u932f\uff0c\u6bd4\u5927\u591a\u6578\u4eba\u60f3\u50cf\u4e2d\u66f4\u5e38\u898b\u3002\n  <\/p>\n<h2><strong>8. \u5982\u4f55\u6e2c\u91cf\u548c\u9a57\u8b49 TTL \u7684\u5be6\u969b\u884c\u70ba<\/strong><\/h2>\n<p>\n    \u6c92\u6709\u53ef\u898b\u6027\uff0c\u5c31\u8ac7\u4e0d\u4e0a\u771f\u6b63\u7ba1\u7406 TTL\u3002\u597d\u5728 CDN \u548c DNS \u5169\u5c64\u90fd\u6703\u7559\u4e0b\u8db3\u5920\u591a\u7684\u300c\u6307\u7d0b\u300d\uff0c\u8b93\u5de5\u7a0b\u5e2b\u53ef\u4ee5\u900f\u904e\u547d\u4ee4\u5217\u63a8\u65b7\u5b83\u5011\u7684\u72c0\u614b\u3002\n  <\/p>\n<ul>\n<li>\n      <strong>\u6aa2\u67e5 HTTP \u6a19\u982d\uff1a<\/strong>\u4f7f\u7528 curl\u3001\u700f\u89bd\u5668\u958b\u767c\u8005\u5de5\u5177\u6216\u8005\u5c01\u5305\u64f7\u53d6\u4ee3\u7406\uff0c\u67e5\u770b\u8207\u5feb\u53d6\u76f8\u95dc\u7684\u6a19\u982d\u3002\u5f88\u591a CDN \u6703\u9644\u52a0\u9664\u932f\u7528\u7684\u81ea\u8a02\u6a19\u982d\uff0c\u5c55\u793a\u5269\u9918\u751f\u547d\u9031\u671f\u3001\u662f\u5426\u547d\u4e2d\u5feb\u53d6\u7b49\u8cc7\u8a0a\u3002\n    <\/li>\n<li>\n      <strong>\u76f4\u63a5\u67e5\u8a62 DNS \u89e3\u6790\u5668\uff1a<\/strong>\u4f7f\u7528 <code>dig<\/code> \u6216 <code>kdig<\/code> \u4e4b\u985e\u5de5\u5177\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u689d\u7d00\u9304\u5728\u89e3\u6790\u5668\u56de\u50b3\u6642\u5269\u9918\u7684 TTL\u3002\u5206\u5225\u5c0d\u591a\u500b\u516c\u5171\u89e3\u6790\u5668\u767c\u8d77\u67e5\u8a62\uff0c\u5c31\u80fd\u5feb\u901f\u5224\u65b7\u5feb\u53d6\u662f\u5426\u5df2\u7d93\u300c\u7a69\u5b9a\u300d\u4e0b\u4f86\u3002\n    <\/li>\n<li>\n      <strong>\u4f7f\u7528\u5408\u6210\u76e3\u6e2c\uff1a<\/strong>\u5168\u7403\u76e3\u63a7\u670d\u52d9\u53ef\u4ee5\u5b9a\u671f\u5b58\u53d6\u7279\u5b9a\u4e3b\u6a5f\u540d\u7a31\uff0c\u8a18\u9304\u5b83\u5011\u89e3\u6790\u5230\u7684 IP \u4ee5\u53ca\u5be6\u969b\u6536\u5230\u7684 HTTP \u56de\u61c9\u3002\u5c0d\u9762\u5411\u5168\u7403\u5b58\u53d6\u7684\u65e5\u672c\u696d\u52d9\u7db2\u57df\u800c\u8a00\uff0c\u9019\u985e\u76e3\u6e2c\u975e\u5e38\u9069\u5408\u7528\u4f86\u5206\u6790\u4e0d\u540c\u570b\u5bb6\u5b58\u53d6\u6642\u7684 DNS \u8207 CDN \u884c\u70ba\u3002\n    <\/li>\n<li>\n      <strong>\u57fa\u65bc\u65e5\u8a8c\u7684\u53cd\u63a8\uff1a<\/strong>\u900f\u904e\u5c0d\u6bd4 origin \u56de\u61c9\u65e5\u8a8c\u548c\u908a\u7de3\u7bc0\u9ede\u65e5\u8a8c\u4e0a\u7684\u6642\u9593\u6233\uff0c\u53ef\u4ee5\u4f30\u7b97\u5be6\u969b\u547d\u4e2d\u7387\uff0c\u4e26\u9a57\u8b49\u5feb\u53d6\u5230\u671f\u6642\u9593\u662f\u5426\u548c\u8a2d\u5b9a\u7d50\u679c\u4e00\u81f4\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u5982\u679c\u7f3a\u5c11\u9019\u6a23\u7684\u56de\u994b\u9589\u74b0\uff0cTTL \u8a2d\u5b9a\u5c31\u53ea\u80fd\u505c\u7559\u5728\u300c\u62cd\u8166\u888b\u300d\uff0c\u4efb\u4f55\u300c\u50b3\u64ad\u73fe\u5728\u61c9\u8a72\u5df2\u7d93\u5b8c\u6210\u4e86\u300d\u7684\u8aaa\u6cd5\uff0c\u90fd\u53ea\u662f\u6a02\u89c0\u63a8\u6e2c\u3002\n  <\/p>\n<h2><strong>9. SEO\u3001\u9801\u9762\u9ad4\u9a57\uff0c\u4ee5\u53ca\u70ba\u4ec0\u9ebc TTL \u4f9d\u7136\u91cd\u8981<\/strong><\/h2>\n<p>\n    \u641c\u5c0b\u5f15\u64ce\u4e26\u4e0d\u6703\u55ae\u7368\u5728\u610f\u4f60\u8a2d\u5b9a\u4e86\u591a\u5c11\u79d2\u7684 TTL\uff0c\u5b83\u771f\u6b63\u95dc\u5fc3\u7684\u662f\u4e00\u500b\u7d9c\u5408\u6548\u679c\uff1a\u9996\u4f4d\u5143\u7d44\u6642\u9593\uff08TTFB\uff09\u3001\u7248\u9762\u7a69\u5b9a\u6027\u3001\u53ef\u7528\u6027\uff0c\u4ee5\u53ca\u722c\u53d6\u904e\u7a0b\u4e2d\u9047\u5230\u932f\u8aa4\u7684\u983b\u7387\u3002\u7cbe\u5fc3\u8abf\u6821\u7684\u5feb\u53d6\u548c\u89e3\u6790\u7b56\u7565\uff0c\u6700\u7d42\u90fd\u6703\u53cd\u6620\u5728\u9019\u4e9b\u6307\u6a19\u4e0a\u3002\n  <\/p>\n<ul>\n<li>\n      <strong>\u70ba\u722c\u87f2\u63d0\u4f9b\u66f4\u5feb\u56de\u61c9\uff1a<\/strong>\u7576\u722c\u87f2\u80fd\u5f9e\u96e2\u81ea\u5df1\u6700\u8fd1\u7684\u908a\u7de3\u7bc0\u9ede\u53d6\u5f97\u7a69\u5b9a\u8cc7\u6e90\u6642\uff0c\u56de\u61c9\u901f\u5ea6\u6703\u66f4\u5feb\uff0c\u5b83\u7684\u722c\u53d6\u984d\u5ea6\u4e5f\u80fd\u88ab\u66f4\u6709\u6548\u5730\u5229\u7528\u3002\u9577\u671f\u4f86\u770b\uff0c\u6709\u5229\u65bc\u641c\u5c0b\u5f15\u64ce\u66f4\u5b8c\u6574\u3001\u66f4\u7a69\u5b9a\u5730\u6536\u9304\u4f60\u7684\u65e5\u672c\u7ad9\u9ede\u5167\u5bb9\u3002\n    <\/li>\n<li>\n      <strong>\u66f4\u7a69\u5b9a\u7684\u53ef\u7528\u6027\uff1a<\/strong>\u652f\u63f4\u5feb\u901f\u6545\u969c\u5207\u63db\u7684 DNS \u8a2d\u5b9a\uff0c\u53ef\u4ee5\u7e2e\u77ed\u722c\u87f2\u9047\u5230\u9023\u7dda\u932f\u8aa4\u7684\u6642\u9593\u8996\u7a97\u3002\u9019\u7a2e\u7a69\u5b9a\u6027\u6703\u4ee5\u4e00\u7a2e\u4e0d\u90a3\u9ebc\u986f\u773c\u4f46\u6301\u7e8c\u7684\u65b9\u5f0f\u5f71\u97ff\u6392\u5e8f\u3002\n    <\/li>\n<li>\n      <strong>\u53ef\u63a7\u7684\u66f4\u65b0\u7bc0\u594f\uff1a<\/strong>\u5408\u7406\u7684 TTL \u80fd\u78ba\u4fdd\u7576\u4f60\u767c\u5e03\u91cd\u8981\u5167\u5bb9\u66f4\u65b0\u6642\uff0c\u5b83\u5011\u6703\u5728\u4e00\u500b\u53ef\u9810\u6e2c\u7684\u6642\u9593\u8996\u7a97\u5167\u5c0d\u4f7f\u7528\u8005\u548c\u641c\u5c0b\u6a5f\u5668\u4eba\u540c\u6642\u751f\u6548\uff0c\u800c\u4e0d\u662f\u8b93\u4e00\u90e8\u5206\u8a2a\u5ba2\u6216\u6a5f\u5668\u4eba\u591a\u770b\u5e7e\u5929\u820a\u9801\u9762\u3002\n    <\/li>\n<\/ul>\n<p>\n    \u7576\u7136\uff0c\u50c5\u50c5\u8f49\u52d5 TTL \u9019\u500b\u65cb\u9215\uff0c\u4e0d\u6703\u795e\u5947\u5730\u628a\u7ad9\u9ede\u9001\u4e0a\u641c\u5c0b\u7d50\u679c\u9996\u9801\u3002\u4f46\u96a8\u610f\u7684\u8a2d\u5b9a\u78ba\u5be6\u6703\u767d\u767d\u88fd\u9020\u6469\u64e6\uff0c\u800c\u7d93\u904e\u6df1\u601d\u719f\u616e\u7684 TTL \u5247\u6709\u52a9\u65bc\u79fb\u9664\u6280\u8853\u4e0a\u7684\u300c\u7d46\u8173\u77f3\u300d\uff0c\u8b93\u5167\u5bb9\u54c1\u8cea\u548c\u7ad9\u9ede\u50f9\u503c\u66f4\u5bb9\u6613\u88ab\u641c\u5c0b\u5f15\u64ce\u6b63\u78ba\u611f\u77e5\u3002\n  <\/p>\n<h2><strong>10. \u9762\u5411\u5de5\u7a0b\u5e2b\u7684\u5be6\u7528\u6aa2\u67e5\u6e05\u55ae<\/strong><\/h2>\n<p>\n    \u70ba\u4e86\u628a\u4e0a\u9762\u7684\u7406\u8ad6\u843d\u5230\u5be6\u8655\uff0c\u4e0b\u9762\u662f\u4e00\u4efd\u53ef\u4ee5\u76f4\u63a5\u5957\u7528\u5728\u65e5\u672c\u696d\u52d9\u68e7\u4e0a\u7684\u7c21\u55ae\u6e05\u55ae\u3002\u4f60\u53ef\u4ee5\u628a\u5b83\u7576\u4f5c\u57fa\u7dda\uff0c\u6839\u64da\u81ea\u5df1\u7684\u67b6\u69cb\u3001\u6d41\u91cf\u7279\u5fb5\u548c\u76e3\u63a7\u73fe\u72c0\u9032\u884c\u8abf\u6574\u3002\n  <\/p>\n<ol>\n<li>\n      <strong>\u8cc7\u7522\u76e4\u9ede\uff1a<\/strong>\u5217\u51fa\u6240\u6709\u4e3b\u6a5f\u540d\u7a31\u3001\u7d00\u9304\u985e\u578b\u4ee5\u53ca\u76ee\u524d\u7684 DNS TTL \u6578\u503c\u3002\u6a19\u8a18\u51fa\u53c3\u8207\u8ca0\u8f09\u5e73\u8861\u6216\u707d\u96e3\u5fa9\u539f\u6d41\u7a0b\u7684\u95dc\u9375\u7d00\u9304\u3002\n    <\/li>\n<li>\n      <strong>\u8cc7\u6e90\u5206\u985e\uff1a<\/strong>\u6309\u300c\u9577\u671f\u975c\u614b\u3001\u7de9\u6162\u8b8a\u5316\u7684\u975c\u614b\u5167\u5bb9\u3001\u52d5\u614b HTML\u3001API\u300d\u5c0d\u5167\u5bb9\u9032\u884c\u6b78\u985e\uff0c\u4e26\u70ba\u6bcf\u4e00\u985e\u5beb\u6e05\u695a\u9810\u671f\u7684\u5feb\u53d6\u884c\u70ba\u3002\n    <\/li>\n<li>\n      <strong>\u5c0d\u9f4a\u6a19\u982d\u8207 CDN \u898f\u5247\uff1a<\/strong>\u78ba\u4fdd\u65e5\u672c origin \u56de\u50b3\u7684 HTTP \u6a19\u982d\u8207 CDN \u63a7\u5236\u53f0\u88e1\u7684\u898f\u5247\u5f7c\u6b64\u4e00\u81f4\uff0c\u907f\u514d\u76f8\u4e92\u77db\u76fe\u7684\u6307\u4ee4\u3002\n    <\/li>\n<li>\n      <strong>\u6f14\u7df4\u9077\u79fb\uff1a<\/strong>\u5c0d\u65bc\u4efb\u4f55\u5f9e\u4e00\u5bb6\u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\uff0f\u4f3a\u670d\u5668\u8a17\u7ba1\u6a5f\u623f\u9077\u5230\u53e6\u4e00\u5bb6\u7684\u8a08\u756b\uff0c\u5148\u5728\u4f4e\u74b0\u5883\u7528\u76f8\u540c\u7684 TTL \u505a\u4e00\u6b21\u5b8c\u6574\u6f14\u7df4\uff0c\u5be6\u969b\u6e2c\u91cf\u5207\u63db\u9700\u8981\u591a\u4e45\u3002\n    <\/li>\n<li>\n      <strong>\u76e3\u6e2c\u50b3\u64ad\u904e\u7a0b\uff1a<\/strong>\u64b0\u5beb\u5c0f\u8173\u672c\uff0c\u5f9e\u591a\u500b\u89e3\u6790\u5668\u53d6\u6a23 DNS \u7d50\u679c\uff0c\u4e26\u900f\u904e CDN \u53d6\u5f97 HTTP \u56de\u61c9\uff0c\u5be6\u969b\u8a18\u9304\u5404\u7a2e\u8b8a\u66f4\u50b3\u64ad\u5b8c\u6210\u6240\u9700\u7684\u6642\u9593\u3002\n    <\/li>\n<li>\n      <strong>\u6c89\u6fb1\u4e8b\u6545\u624b\u518a\uff1a<\/strong>\u5206\u5225\u70ba\u300c\u8abf\u6574 DNS\u300d\u8207\u300c\u6e05\u7406\uff0f\u4fee\u6539 CDN \u5feb\u53d6\u300d\u64b0\u5beb\u7368\u7acb\u7684\u64cd\u4f5c\u624b\u518a\uff0c\u5305\u542b\u9632\u8b77\u63aa\u65bd\u3001\u6838\u5c0d\u6e05\u55ae\u4ee5\u53ca\u9810\u671f\u6062\u5fa9\u6642\u9593\uff0c\u4e26\u5b9a\u671f\u6f14\u7df4\u3002\n    <\/li>\n<\/ol>\n<p>\n    \u96a8\u8457\u6642\u9593\u63a8\u79fb\uff0c\u9019\u7a2e\u898f\u7bc4\u5316\u7684\u5be6\u8e10\u6703\u628a TTL \u5f9e\u4e00\u500b\u6a21\u7cca\u3001\u5e36\u9ede\u7384\u5b78\u5473\u9053\u7684\u795e\u7955\u53c3\u6578\uff0c\u8b8a\u6210\u4f60\u5e73\u53f0\u4e0a\u4e00\u500b\u660e\u78ba\u3001\u53ef\u6e2c\u8a66\u3001\u53ef\u9810\u6e2c\u7684\u63a7\u5236\u9762\u3002\n  <\/p>\n<h2><strong>11. \u5beb\u7d66\u5728\u610f\u7d30\u7bc0\u7684\u5de5\u7a0b\u5e2b\u7684\u6700\u5f8c\u5e7e\u53e5\u8a71<\/strong><\/h2>\n<p>\n    \u5c0d\u7d93\u9a57\u8c50\u5bcc\u7684\u904b\u7dad\u548c\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u8abf TTL \u7684\u6a02\u8da3\u4e26\u4e0d\u5728\u65bc\u80cc\u51fa\u591a\u5c11\u9810\u8a2d\u503c\uff0c\u800c\u5728\u65bc\u771f\u6b63\u7406\u89e3\u300c\u591a\u500b\u7368\u7acb\u5feb\u53d6\u5c64\u758a\u52a0\u8d77\u4f86\u7684\u6574\u9ad4\u884c\u70ba\u300d\u3002CDN \u908a\u7de3\u548c DNS \u89e3\u6790\u5668\u5404\u81ea\u638c\u63a7\u8457\u6d41\u91cf\u4e2d\u4e0d\u540c\u7684\u6b0a\u529b\uff1a\u4e00\u500b\u6c7a\u5b9a\u300c\u53bb\u54ea\u88e1\u300d\uff0c\u4e00\u500b\u6c7a\u5b9a\u300c\u62ff\u4ec0\u9ebc\u300d\u3002\u5982\u679c\u5728\u8a0e\u8ad6\u6216\u8a2d\u5b9a\u6642\u628a\u5b83\u5011\u6df7\u5728\u4e00\u8d77\uff0c\u5c31\u5f88\u5bb9\u6613\u5f15\u5165\u90a3\u4e9b\u96b1\u6666\u53c8\u96e3\u4ee5\u5b9a\u4f4d\u7684 bug\u3002\u5c0d\u904b\u884c\u5728\u65e5\u672c\u57fa\u790e\u8a2d\u65bd\u4e0a\u7684\u696d\u52d9\u800c\u8a00\uff0c\u672c\u5730\u4f7f\u7528\u8005\u548c\u5168\u7403\u5b58\u53d6\u6703\u5728\u9019\u88e1\u532f\u5408\uff0c\u9019\u7a2e\u7d30\u5fae\u5dee\u7570\u6700\u7d42\u6703\u76f4\u63a5\u5448\u73fe\u5728\u5ef6\u9072\u66f2\u7dda\u3001\u932f\u8aa4\u65e5\u8a8c\u4ee5\u53ca\u641c\u5c0b\u722c\u53d6\u7d71\u8a08\u4e2d\u3002\u82e5\u53ea\u80fd\u5f9e\u672c\u6587\u5e36\u8d70\u4e00\u4ef6\u4e8b\uff0c\u90a3\u5c31\u8acb\u990a\u6210\u4e00\u500b\u7fd2\u6163\uff1a\u6bcf\u7576\u4f60\u898f\u5283\u3001\u6392\u67e5\u6216\u89e3\u91cb\u8207 CDN \u5feb\u53d6 TTL\u3001DNS TTL \u5dee\u7570\u3001\u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\u76f8\u95dc\u7684\u884c\u70ba\u6642\uff0c\u90fd\u8981\u81ea\u89ba\u62c9\u51fa\u4e00\u689d\u300c\u7db2\u57df\u540d\u7a31\u5c64\u300d\u8207\u300c\u908a\u7de3\u5feb\u53d6\u5c64\u300d\u4e4b\u9593\u7684\u6e05\u6670\u5206\u754c\u7dda\u3002\n  <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u4f60\u7684\u65e5\u5e38\u5de5\u4f5c\u5c31\u662f\u76ef\u5ef6\u9072\u66f2\u7dda\u3001\u770b\u5404\u7a2e\u6a19\u982d\u6b04\u4f4d\uff0c\u90a3\u4f60\u5f88\u53ef\u80fd\u5df2\u7d93\u548c TTL \u6253\u904e\u7121\u6578\u6b21\u4ea4\u9053\uff0c\u537b\u4ecd\u7136\u80fd\u5728\u751f\u7522\u74b0\u5883\u88e1 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/cdn-cache-ttl-vs-dns-ttl-on-japan-servers\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":11,"featured_media":37000,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[267],"tags":[],"class_list":["post-37003","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CDN \u5feb\u53d6 TTL \u8207 DNS TTL \u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u7684\u5dee\u7570<\/title>\n<meta name=\"description\" content=\"\u4e00\u7bc7\u9762\u5411\u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u904b\u71df\u696d\u52d9\u7684\u5de5\u7a0b\u5e2b\u7684\u6df1\u5ea6\u6280\u8853\u6307\u5357\uff0c\u5c08\u9580\u8b1b\u6e05 CDN \u5feb\u53d6 TTL \u8207 DNS TTL \u7684\u5dee\u5225\uff0c\u4e26\u7d50\u5408\u65e5\u672c\u6a5f\u623f\u74b0\u5883\uff0c\u5e6b\u52a9\u4f60\u5728\u5ef6\u9072\u3001\u4e00\u81f4\u6027\u8207 SEO \u4e4b\u9593\u5b89\u5168\u8abf\u6821\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/cdn-cache-ttl-vs-dns-ttl-on-japan-servers\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CDN \u5feb\u53d6 TTL \u8207 DNS TTL \u5728\u65e5\u672c\u4f3a\u670d\u5668\u4e0a\u7684\u5dee\u7570\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.varidata.com\/zh-tw\/blog-tc\/cdn-cache-ttl-vs-dns-ttl-on-japan-servers\/\" \/>\n<meta property=\"og:site_name\" content=\"Varidata Limited\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-05T08:04:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-05T08:17:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.varidata.com\/wp-content\/uploads\/2026\/11\/\u87a2\u5e55\u64f7\u53d6\u756b\u9762-2026-11-05-160254.png\" \/>\n\t<meta property=\"og:image:width\" content=\"620\" \/>\n\t<meta property=\"og:image:height\" content=\"370\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<script type=\"application\/ld+json\" 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