{"id":19137,"date":"2026-04-17T18:20:19","date_gmt":"2026-04-17T16:20:19","guid":{"rendered":"https:\/\/webhosting.de\/dns-resolver-load-handling-hoher-last-cacheboost\/"},"modified":"2026-04-17T18:20:19","modified_gmt":"2026-04-17T16:20:19","slug":"dns%e3%83%aa%e3%82%be%e3%83%ab%e3%83%90%e8%b2%a0%e8%8d%b7%e5%87%a6%e7%90%86%e9%ab%98%e6%9c%80%e5%be%8c%e3%81%ae%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%83%96%e3%83%bc%e3%82%b9%e3%83%88","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/dns-resolver-load-handling-hoher-last-cacheboost\/","title":{"rendered":"\u9ad8\u8ca0\u8377\u6642\u306eDNS\u30ea\u30be\u30eb\u30d0\u8ca0\u8377\u51e6\u7406\u306e\u6700\u9069\u5316"},"content":{"rendered":"<p>\u6700\u9069\u5316\u3059\u308b <strong>DNS\u30ea\u30be\u30eb\u30d0\u8ca0\u8377<\/strong> 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\u30bf\u30fc\u30b2\u30c3\u30c8\u5236\u5fa1\uff1aTTL\u3001\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3001\u30b5\u30fc\u30d6\u30fb\u30b9\u30c6\u30a4\u30eb<\/li>\n  <li><strong>\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8<\/strong> \u8fd1\u8ddd\u96e2\u306e\u30b8\u30aa\u30fb\u30ea\u30c0\u30f3\u30c0\u30f3\u30b7\u30fc<\/li>\n  <li><strong>\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0<\/strong> \u9759\u3068\u52d5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u30d2\u30c3\u30c8\u7387\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3001\u30a8\u30e9\u30fc\u7387<\/li>\n  <li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong> DoH\/DoT\u3001DNSSEC\u3001RRL\u3068\u3068\u3082\u306b<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/dns-resolver-optimierung-4827.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u8ca0\u62c5\u3092\u7406\u89e3\u3059\u308b\u539f\u56e0\u3068\u75c7\u72b6<\/h2>\n\n<p>\u9ad8\u3044 <strong>\u8ca0\u8377<\/strong> 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<strong>\u539f\u56e0<\/strong> \u3059\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>DNS\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0\uff1a\u6226\u7565\u3068\u9078\u629e<\/h2>\n\n<p>\u5206\u6563\u578b <strong>\u8ca0\u8377<\/strong> 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TTL\u3001\u6ce8\u610f\u6df1\u3044\u30d5\u30a7\u30a4\u30eb\u30d0\u30c3\u30af\u306f\u3001\u30d0\u30bf\u3064\u304d\u3092\u9632\u304e\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u4f4e\u304f\u4fdd\u3064\u3002 <strong>\u7a7a\u5ba4\u72b6\u6cc1<\/strong> \u9ad8\u3044\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/dnsresolverbesprechung4123.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ad\u30e3\u30c3\u30b7\u30e5\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30d2\u30c3\u30c8\u7387\u3092\u76ee\u6a19\u3069\u304a\u308a\u306b\u9ad8\u3081\u308b<\/h2>\n\n<p>\u9ad8\u3044 <strong>\u30d2\u30c3\u30c8\u7387<\/strong> 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<a href=\"https:\/\/webhosting.de\/ja\/dns%e3%83%aa%e3%82%be%e3%83%ab%e3%83%90%e3%81%ae%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9-%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e6%88%a6%e7%95%a5-%e3%82%ad%e3%83%a3\/\">\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565<\/a>, \u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u3068 <strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong> \u5b89\u5b9a\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u3068\u30b8\u30aa\u30fb\u30ea\u30c0\u30f3\u30c0\u30f3\u30b7\u30fc\u3092\u6b63\u3057\u304f\u4f7f\u3046<\/h2>\n\n<p>\u3068\u4e00\u7dd2\u306b <strong>\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8<\/strong> \u30ea\u30be\u30eb\u30d0\u3092\u30e6\u30fc\u30b6\u30fc\u306e\u8fd1\u304f\u306b\u6301\u3063\u3066\u304d\u3066\u3001\u8907\u6570\u306ePoP\u306b\u81ea\u52d5\u7684\u306b\u8ca0\u8377\u3092\u5206\u6563\u3055\u305b\u308b\u3002\u512a\u308c\u305f\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u3001\u8ce2\u660e\u306a\u30d4\u30a2\u30ea\u30f3\u30b0\u3001\u30cf\u30c3\u30d4\u30fc\u30a2\u30a4\u30dc\u30fc\u30eb\u306eIPv6\u304c\u6700\u521d\u306e\u5fdc\u7b54\u307e\u3067\u306e\u6642\u9593\u3092\u77ed\u7e2e\u3059\u308b\u3002\u79c1\u306f\u30b0\u30eb\u30fc\u30ec\u30b3\u30fc\u30c9\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3061\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u79fb\u52d5\u3057\u3066\u3082\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\u304c\u5d29\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u3068\u30ea\u30be\u30eb\u30d0\u306e\u30a8\u30c3\u30b8\u3067\u30ec\u30fc\u30c8\u5236\u9650\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u6b63\u5f53\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5927\u304d\u306a\u6253\u6483\u3092\u4e0e\u3048\u308b\u3053\u3068\u306a\u304f\u3001\u5897\u5e45\u3092\u9045\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u3001\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u3069\u306e\u3088\u3046\u306b\u8ce2\u660e\u306a\u50cd\u304d\u3092\u3057\u3066\u3044\u308b\u304b\u3092\u304a\u898b\u305b\u3067\u304d\u308c\u3070\u5e78\u3044\u3067\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/dns-%e8%b2%a0%e8%8d%b7%e5%88%86%e6%95%a3-geodns-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%83%90%e3%83%a9%e3%83%b3%e3%82%b9\/\">GeoDNS \u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0<\/a>, \u8fd1\u3055\u3001\u80fd\u529b\u3001\u5065\u5eb7\u3092\u517c\u306d\u5099\u3048\u3001\u3057\u305f\u304c\u3063\u3066 <strong>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc<\/strong> \u3088\u308a\u4f4e\u3044\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/dns-resolver-load-optimization-4357.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u901f\u5ea6\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4fdd\u8b77\uff1aDoH\/DoT<\/h2>\n\n<p>\u79c1\u306f\u78ba\u4fdd\u3059\u308b <strong>DNS<\/strong>-DoH\u3068DoT\u306b\u3088\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u9855\u8457\u306b\u5897\u52a0\u3055\u305b\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6c38\u7d9a\u7684\u306aTLS\u30bb\u30c3\u30b7\u30e7\u30f3\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u518d\u958b\u3001\u6700\u65b0\u306e\u6697\u53f7\u30b9\u30a4\u30fc\u30c8\u306b\u3088\u308a\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u4f4e\u304f\u6291\u3048\u308b\u3002QNAME\u3092\u6700\u5c0f\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u9001\u4fe1\u3055\u308c\u308b\u60c5\u5831\u3092\u6e1b\u3089\u3057\u3001\u653b\u6483\u9762\u3092\u7e2e\u5c0f\u3057\u3001DNSSEC\u306f\u30c8\u30e9\u30b9\u30c8\u30fb\u30a2\u30f3\u30ab\u30fc\u3092\u63d0\u4f9b\u3059\u308b\u3002\u9ad8\u8ca0\u8377\u6642\u306b\u306f\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3068\u512a\u308c\u305f\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6\u30fb\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3067TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u30fb\u30b9\u30c8\u30fc\u30e0\u3092\u9632\u3050\u3002A\u3068AAAA\u306e\u4e26\u5217\u30af\u30a8\u30ea\uff08Happy Eyeballs\uff09\u306f\u3001\u30d1\u30b9\u304c\u30cf\u30f3\u30b0\u30a2\u30c3\u30d7\u3057\u3066\u3082\u9ad8\u901f\u306a\u7d50\u679c\u3092\u63d0\u4f9b\u3057\u3001DNSSEC\u3092\u7dad\u6301\u3057\u307e\u3059\u3002 <strong>\u30af\u30a8\u30ea<\/strong>-\u4e00\u8cab\u3057\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3002.<\/p>\n\n<h2>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\uff1a\u30e1\u30e2\u30ea\u3001EDNS\u3001\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba<\/h2>\n\n<p>I\u30b9\u30b1\u30fc\u30eb <strong>\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>-\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u30e1\u30e2\u30ea\u306b\u6b8b\u308b\u3088\u3046\u306b\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30df\u30c3\u30af\u30b9\u306b\u5408\u308f\u305b\u3066\u30b5\u30a4\u30ba\u3092\u8abf\u6574\u3059\u308b\u3002EDNS\u30d0\u30c3\u30d5\u30a1\u306e\u30b5\u30a4\u30ba\u306f\u3001\u65ad\u7247\u5316\u3092\u907f\u3051\u3001\u304b\u3064DNSSEC\u306e\u305f\u3081\u306b\u5341\u5206\u306a\u30b9\u30da\u30fc\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u5c0f\u9650\u306e\u5fdc\u7b54\u3068\u4e0d\u8981\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u7701\u7565\u306fUDP\u7d4c\u7531\u306e\u30d1\u30b1\u30c3\u30c8\u30b5\u30a4\u30ba\u3092\u6e1b\u3089\u3057\u3001\u6210\u529f\u7387\u3092\u9ad8\u3081\u308b\u3002\u30ec\u30b3\u30fc\u30c9\u304c\u4f55\u5ea6\u3082TCP\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u5834\u5408\u306f\u3001MTU\u3001\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u5927\u304d\u306aDNS\u30d1\u30b1\u30c3\u30c8\u3092\u30b9\u30ed\u30c3\u30c8\u30eb\u3059\u308b\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u53ef\u80fd\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u6700\u5927\u30b5\u30a4\u30ba\u3092\u660e\u78ba\u306b\u3057\u3001\u30ec\u30b3\u30fc\u30c9\u306e\u518d\u8a66\u884c\u3092\u884c\u3046\u3053\u3068\u3067\u3001DNS\u30d1\u30b1\u30c3\u30c8\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u307e\u3059\u3002 <strong>\u4fe1\u983c\u6027<\/strong> \u6e2c\u5b9a\u53ef\u80fd\u3067\u3042\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/dns_load_optimization_4532.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u91cd\u8981\u306a\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3068SLO<\/h2>\n\n<p>\u76ee\u306b\u898b\u3048\u306a\u3044 <strong>\u6307\u6a19<\/strong> \u79c1\u306f\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3092\u3046\u307e\u304f\u6c7a\u3081\u3089\u308c\u306a\u3044\u3002\u79c1\u306fP50\/P95\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30d2\u30c3\u30c8\u3068\u30df\u30b9\u3001\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u3054\u3068\u306e\u30a8\u30e9\u30fc\u7387\u3001\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7\u306e\u5206\u5e03\u3054\u3068\u306b\u5206\u3051\u3066\u8ffd\u8de1\u3057\u3066\u3044\u308b\u3002\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u7387\u3001NXDOMAIN\u306e\u5272\u5408\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30fb\u30b5\u30a4\u30ba\u3082\u8a08\u6e2c\u3057\u3066\u3044\u308b\u3002\u79c1\u306f\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u30d0\u30a4\u30ca\u30ea\u3067\u8a55\u4fa1\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30d0\u30e9\u30f3\u30b5\u30fc\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u8ca0\u8377\u3092\u30b7\u30d5\u30c8\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u52a3\u5316\u30ec\u30d9\u30eb\u3067\u8a55\u4fa1\u3057\u3066\u3044\u308b\u3002\u6b21\u306e\u8868\u306f\u4e3b\u306a\u6570\u5024\u3001\u9069\u5207\u306a\u76ee\u6a19\u7bc4\u56f2\u3001\u304a\u3088\u3073\u76f4\u63a5\u306e\u6e2c\u5b9a\u5024\u3092\u793a\u3057\u3066\u3044\u308b\u3002 <strong>\u6700\u9069\u5316<\/strong>.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30ad\u30fc\u30d1\u30fc\u30bd\u30f3<\/th>\n      <th>\u5bfe\u8c61\u5730\u57df<\/th>\n      <th>\u8b66\u544a\u3057\u304d\u3044\u5024<\/th>\n      <th>\u7dca\u6025\u63aa\u7f6e<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>P95 \u30ec\u30a4\u30c6\u30f3\u30b7 (ms)<\/td>\n      <td>&lt; 50<\/td>\n      <td>&gt; 120<\/td>\n      <td>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5897\u52a0\u3001\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u306e\u30c1\u30a7\u30c3\u30af<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387\uff08%\uff09<\/td>\n      <td>&gt; 85<\/td>\n      <td>&lt; 70<\/td>\n      <td>TTL\u3092\u4e0a\u3052\u3001\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u6709\u52b9\u306b\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u7387\uff08%\uff09<\/td>\n      <td>&lt; 0,2<\/td>\n      <td>&gt; 1,0<\/td>\n      <td>\u4e0a\u6d41\u306e\u5909\u66f4\u3001RRL\u306e\u8abf\u6574<\/td>\n    <\/tr>\n    <tr>\n      <td>TC\u30d5\u30e9\u30c3\u30b0\u30fb\u30af\u30a9\u30fc\u30c8(%)<\/td>\n      <td>&lt; 2<\/td>\n      <td>&gt; 5<\/td>\n      <td>EDNS\u306e\u30b5\u30a4\u30ba\u3001\u6700\u5c0f\u5fdc\u7b54\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/td>\n    <\/tr>\n    <tr>\n      <td>NXDOMAIN\u30b7\u30a7\u30a2\uff08%\uff09<\/td>\n      <td>&lt; 5<\/td>\n      <td>&gt; 15<\/td>\n      <td>NSEC\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5897\u3084\u3057\u3001\u30bf\u30a4\u30dd\u30fb\u30bd\u30fc\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u69cb\u6210\u306e\u6700\u9069\u5316\uff1a12\u672c\u306e\u30af\u30a4\u30c3\u30af\u30ec\u30d0\u30fc<\/h2>\n\n<p>\u3092\u7f6e\u3044\u305f\u3002 <strong>TTL<\/strong> \u52d5\u7684\u306a\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u77ed\u3044\u5024\u3001\u9759\u7684\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u306f\u9577\u3044\u5024\u3092\u6307\u5b9a\u3057\u3001\u4e0d\u8981\u306a\u518d\u5e30\u3092\u907f\u3051\u308b\u3002Serve stale\u306f\u3001\u65b0\u9bae\u306a\u5fdc\u7b54\u3092\u5927\u5e45\u306b\u9045\u3089\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u77ed\u3044\u30d4\u30fc\u30af\u306e\u30d0\u30c3\u30d5\u30a1\u3092\u62e1\u5f35\u3059\u308b\u3002\u30ea\u30be\u30eb\u30d0\u304c\u4e88\u5099\u30af\u30a8\u30ea\u3092\u9001\u308a\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u3001\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u63a7\u3048\u3081\u306b\u3057\u3066\u3044\u308b\u3002CNAME\u30c1\u30a7\u30fc\u30f3\u306b\u3064\u3044\u3066\u306f\u3001\u6700\u59272\u30db\u30c3\u30d7\u3092\u4fdd\u3061\u3001\u4e0d\u5fc5\u8981\u306a\u5165\u308c\u5b50\u3092\u89e3\u6c7a\u3059\u308b\u3002\u3059\u3079\u3066\u306e\u5909\u66f4\u3092\u65e5\u4ed8\u3068\u30bf\u30fc\u30b2\u30c3\u30c8\u5024\u3067\u6587\u66f8\u5316\u3057\u3001\u6b21\u306e\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002 <strong>\u52b9\u679c<\/strong> \u5f8c\u306b\u6e2c\u5b9a\u3057\u3001\u9006\u8ee2\u3059\u308b\u3002.<\/p>\n\n<p>\u79c1\u306f\u30c1\u30a7\u30c3\u30af\u3059\u308b <strong>\u30a4\u30fc\u30c7\u30a3\u30fc\u30a8\u30cc\u30a8\u30b9<\/strong>UDP\u304c\u307b\u3068\u3093\u3069\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3057\u306a\u3044\u3088\u3046\u306b\u3001-\u30d0\u30c3\u30d5\u30a1\u3068\u6700\u5c0f\u9650\u306e\u5fdc\u7b54\u3092\u4f7f\u7528\u3059\u308b\u3002QNAME\u306e\u6700\u5c0f\u5316\u3092\u6709\u52b9\u306b\u3057\u3001RRSIG\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u3092\u614e\u91cd\u306b\u306e\u307f\u6e1b\u3089\u3057\u3001DNSSEC\u306e\u30b9\u30e9\u30a4\u30c7\u30a3\u30f3\u30b0\u30fb\u30ed\u30fc\u30eb\u30aa\u30fc\u30d0\u30fc\u30fb\u30b9\u30c6\u30c3\u30d7\u306b\u6ce8\u610f\u3092\u6255\u3046\u3002TLS\u306e\u518d\u958b\u3092\u5f37\u5316\u3057\u306a\u304c\u3089\u3001DoH\/DoT\u306e\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6\u3092\u5bdb\u5927\u306b\u7dad\u6301\u3059\u308b\u3002\u6b63\u5f53\u306a\u30b9\u30d1\u30a4\u30af\u306b\u5927\u6253\u6483\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u306b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3054\u3068\u3001\u30be\u30fc\u30f3\u3054\u3068\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u3068\u6bb5\u968e\u7684\u306b\u30ec\u30fc\u30c8\u5236\u9650\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3002\u69cb\u9020\u306e\u8a73\u7d30\u304c\u53c2\u8003\u306b\u306a\u308b\uff1a\u3053\u306e <a href=\"https:\/\/webhosting.de\/ja\/dns%e3%82%a2%e3%83%bc%e3%82%ad%e3%83%86%e3%82%af%e3%83%81%e3%83%a3-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%aa%e3%82%be%e3%83%ab%e3%83%90-ttl%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc\/\">DNS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/a> \u30be\u30fc\u30f3\u3001\u30ea\u30be\u30eb\u30d0\u3001\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u30af\u30ea\u30fc\u30f3\u306b\u9023\u52d5\u3059\u308b\u306e\u304b\u3001\u307e\u305f\u3001\u3069\u306e\u3088\u3046\u306b\u9023\u52d5\u3059\u308b\u306e\u304b\u3092\u304a\u898b\u305b\u3057\u307e\u3059\u3002 <strong>\u8ca0\u8377<\/strong> \u304c\u6ed1\u3089\u304b\u306b\u306a\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/DNS_Resolver_Optimierung_3948.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5178\u578b\u7684\u306a\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u305d\u306e\u56de\u907f\u65b9\u6cd5<\/h2>\n\n<p>\u591a\u304f\u306e <strong>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af<\/strong> \u306f\u3001\u5c0f\u3055\u3059\u304e\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\u3067\u3042\u308a\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u6642\u306b\u5e38\u306b\u7f6e\u63db\u3055\u308c\u308b\u3002EDNS\u306e\u30b5\u30a4\u30ba\u304c\u4e0d\u9069\u5207\u306a\u5834\u5408\u3001\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3057\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u7d4c\u7531\u3067\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u3064\u306a\u304c\u308b\u3002\u9577\u3044CNAME\u30c1\u30a7\u30fc\u30f3\u3068\u4e0d\u5fc5\u8981\u306a\u8ee2\u9001\u306f\u30db\u30c3\u30d7\u6570\u3092\u5897\u3084\u3057\u3001\u5fdc\u7b54\u3092\u9045\u3089\u305b\u308b\u3002\u4e0d\u660e\u78ba\u306a\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u306f\u3001\u969c\u5bb3\u767a\u751f\u6642\u306b\u30d0\u30bf\u30d0\u30bf\u3057\u305f\u308a\u3001\u5207\u308a\u66ff\u3048\u304c\u9045\u308c\u305f\u308a\u3059\u308b\u3002\u79c1\u306f\u3001\u6e2c\u5b9a\u53ef\u80fd\u306a\u65b9\u6cd5\u3067\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u3092\u8a08\u753b\u3057\u3001\u5b9a\u671f\u7684\u306b\u8ca0\u8377\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3057\u3001\u5909\u66f4\u3092\u5e38\u306b\u56fa\u5b9a\u3055\u308c\u305f <strong>SLO<\/strong> \u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n\n<h2>\u5b9f\u8df5\uff1a\u6700\u9069\u5316\u524d\u5f8c\u306e\u6307\u6a19<\/h2>\n\n<p>\u3068\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f <strong>\u4ea4\u901a\u91cf\u304c\u591a\u3044<\/strong> \u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u3001\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3001\u77ed\u7e2eCNAME\u30c1\u30a7\u30fc\u30f3\u3067DNS\u6642\u9593\u309220-30 ms P95\u306b\u77ed\u7e2e\u3057\u307e\u3057\u305f\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u30ec\u30fc\u30c8\u306f72 %\u304b\u308990 %\u306b\u5897\u52a0\u3057\u3001\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u304c3\u5206\u306e1\u4ee5\u4e0a\u7de9\u548c\u3055\u308c\u307e\u3057\u305f\u3002EDNS\u3001\u6700\u5c0f\u30ec\u30b9\u30dd\u30f3\u30b9\u3001TCP\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8abf\u6574\u3057\u305f\u3068\u3053\u308d\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u304c0.2 %\u4ee5\u4e0b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u8907\u6570\u306e\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u307e\u305f\u304c\u308b\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0\u306b\u3088\u308a\u3001\u77ed\u3044TTL\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u306f\u6d88\u6ec5\u3057\u307e\u3057\u305f\u30027\u65e5\u5f8c\u306830\u65e5\u5f8c\u306b\u52b9\u679c\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u5fae\u8abf\u6574\u3092\u884c\u3044\u307e\u3057\u305f\u3002 <strong>\u30a2\u30fc\u30eb\u30a8\u30eb\u30a8\u30eb<\/strong> \u3068\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u30af\u30a9\u30fc\u30bf\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/04\/dns-resolver-optimierung-4157.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u6790\uff1a\u30df\u30c3\u30af\u30b9\u3001\u30ea\u30d4\u30fc\u30c8\u3001\u30b3\u30fc\u30eb\u30c9\u30d1\u30b9<\/h2>\n\n<p>\u3092\u89e3\u4f53\u3059\u308b\u3002 <strong>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30fb\u30df\u30c3\u30af\u30b9<\/strong> 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<strong>\u7e70\u308a\u8fd4\u3057<\/strong> QNAME\/QTYPE\u30ec\u30d9\u30eb\u3067\u30d1\u30ec\u30fc\u30c8\u5206\u6790\u3092\u884c\u3046\u3068\u3001\u4e0a\u4f4d1,000\u306e\u540d\u524d\u304c\u8ca0\u8377\u306e60\uff5e80 %\u3092\u5360\u3081\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f\u30d7\u30ea\u30a6\u30a9\u30fc\u30df\u30f3\u30b0\uff08\u30b9\u30bf\u30fc\u30c8\u30a2\u30c3\u30d7\u307e\u305f\u306f\u518d\u30c7\u30d7\u30ed\u30a4\u6bb5\u968e\uff09\u3068serve-stale-while-revalidate\u306b\u3088\u308a\u3001\u30ed\u30fc\u30eb\u30a2\u30a6\u30c8\u5f8c\u306e\u8ca0\u8377\u30d4\u30fc\u30af\u3092\u5e73\u6e96\u5316\u3059\u308b\u3002\u5b58\u5728\u3057\u306a\u3044\u540d\u524d\u306b\u5bfe\u3057\u3066\u691c\u8a3c\u6e08\u307f\u306eDNSSEC\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7a4d\u6975\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8ca0\u306e\u518d\u5e30\u3092\u5927\u5e45\u306b\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u307e\u308c\u3060\u304c\u9ad8\u4fa1\u306a\u30c1\u30a7\u30fc\u30f3\u304c\u4e2d\u592e\u5024\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u306b\u30c0\u30e1\u30fc\u30b8\u3092\u4e0e\u3048\u308b\u306e\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>\u30ad\u30e5\u30fc\u3001\u30d0\u30c3\u30af\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u3001\u30ea\u30c8\u30e9\u30a4\u30d0\u30b8\u30a7\u30c3\u30c8<\/h2>\n\n<p>\u9650\u754c <strong>\u5353\u8d8a\u3057\u305f\u30a2\u30d4\u30fc\u30eb<\/strong> \u5358\u4e00\u306e\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u304c\u30ea\u30be\u30eb \u30d0\u30fc\u30d5\u30a1\u30fc\u30e0\u5168\u4f53\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u306b\u3001\u4e0a\u6d41\u30be\u30fc\u30f3\u304a\u3088\u3073\u30bf\u30fc\u30b2\u30c3\u30c8\u30be\u30fc\u30f3 \u3054\u3068\u306b\u30ea\u30c8\u30e9\u30a4\u3092\u884c\u3046\u3002\u6307\u6570\u95a2\u6570\u7684\u306a\u30d0\u30c3\u30af\u30aa\u30d5\u3068\u30b8\u30c3\u30bf\u30fc\u306b\u3088\u308b\u660e\u78ba\u306a\u518d\u8a66\u884c\u30d0\u30b8\u30a7\u30c3\u30c8\u306f\u3001\u540c\u671f\u306e\u5f71\u97ff\u3092\u9632\u3050\u3002\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u539f\u7406\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4e0a\u6d41\u306e\u30a8\u30e9\u30fc\u7387\u304c\u95be\u5024\u3092\u8d85\u3048\u305f\u5834\u5408\u3001\u305d\u306e\u4e0a\u6d41\u3078\u306e\u30af\u30a8\u30ea\u30fc\u3092\u30b9\u30ed\u30c3\u30c8\u30eb\u3059\u308b\u304b\u3001\u4e00\u6642\u7684\u306b\u8fc2\u56de\u3055\u305b\u307e\u3059\u3002\u53d7\u4fe1\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ad\u30e5\u30fc\u306b\u306f\u3001\u516c\u5e73\u306a\u512a\u5148\u9806\u4f4d\uff08\u4f8b\u3048\u3070\u3001\u3059\u3050\u306b\u671f\u9650\u5207\u308c\u306b\u306a\u308b\u77ed\u3044TTL\u304c\u671b\u307e\u3057\u3044\uff09\u3092\u3064\u3051\u3066\u4e0a\u9650\u3092\u53b3\u3057\u304f\u8a2d\u5b9a\u3057\u3001\u30d0\u30c3\u30af\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u304c\u65e9\u3044\u6bb5\u968e\u3067\u76ee\u306b\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u3001\u96a0\u308c\u305f\u30d0\u30c3\u30d5\u30a1\u30c1\u30a7\u30fc\u30f3\u306b\u6d88\u3048\u3066\u3057\u307e\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u91cd\u8907\u6392\u9664\u3068\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u6226\u7565<\/h2>\n\n<p>\u91cd\u8907\u3092\u907f\u3051\u308b 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<strong>BGP<\/strong> 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<strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30b9<\/strong> \u6c34\u5e73: 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<strong>\u52b4\u50cd\u8005<\/strong> \u30ab\u30fc\u30cd\u30eb\u306e\u8fd1\u63a5\u6027\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30b9\u30a4\u30c3\u30c1\u306e\u6e2c\u5b9a\u3001\u30ed\u30c3\u30af\u4fdd\u6301\u306e\u524a\u6e1b\uff08\u30b7\u30e3\u30fc\u30c9\u5316\u3055\u308c\u305f\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u306f\u30ed\u30c3\u30af\u30d5\u30ea\u30fc\u30de\u30c3\u30d7\uff09\u3002\u30aa\u30fc\u30d7\u30f3\u30d5\u30a1\u30a4\u30eb\u306e\u5236\u9650\u3001\u30a8\u30d5\u30a7\u30e1\u30e9\u30eb\u306a\u30dd\u30fc\u30c8\u306e\u7bc4\u56f2\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u3001UDP\u3067\u4e0d\u5fc5\u8981\u306bConntrack\u3092\u4f7f\u3044\u679c\u305f\u3055\u306a\u3044\u3088\u3046\u306b\u3059\u308b\uff08\u78ba\u7acb\u3055\u308c\u305f\u30d1\u30b9\u306e\u30d0\u30a4\u30d1\u30b9\uff09\u3002\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u9762\u3067\u306f\u3001\u76ee\u6a19\u30d2\u30c3\u30c8\u7387\u306b\u5341\u5206\u306aRAM\u3068\u4e88\u5099\u3092\u8a08\u753b\u3057\u3066\u3044\u308b\u3002\u6697\u53f7\uff08DNSSEC\/DoT\uff09\u304c\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u3089\u306a\u3044\u9650\u308a\u3001CPU\u3088\u308a\u3082RAM\u3092\u5897\u3084\u3057\u305f\u307b\u3046\u304c\u3044\u3044\u3002\u6697\u53f7\u306e\u8ca0\u8377\u304c\u5897\u3048\u305f\u3089\u3001CPU\u8981\u4ef6\u306e\u4f4e\u3044\u30ab\u30fc\u30d6\u30d9\u30fc\u30b9\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u5207\u308a\u66ff\u3048\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30fb\u30a2\u30af\u30bb\u30e9\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5099\u3048\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u6ce8\u610f\u3092\u6255\u3046\u3002.<\/p>\n\n<h2>\u5dfb\u304d\u6dfb\u3048\u3092\u98df\u308f\u306a\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u60aa\u7528\u3078\u306e\u8010\u6027<\/h2>\n\n<p>\u3092\u30bb\u30c3\u30c8\u3057\u305f\u3002 <strong>DNS\u30af\u30c3\u30ad\u30fc<\/strong> \u307e\u305f\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306aRRL\u306b\u3088\u308a\u3001\u6b63\u5f53\u306a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u904e\u5ea6\u306e\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u306a\u304f\u3001\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\/\u5897\u5e45\u3092\u6291\u5236\u3057\u307e\u3059\u3002\u30bd\u30fc\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3054\u3068\u3001QNAME\u30d1\u30bf\u30fc\u30f3\u3054\u3068\u3001\u30be\u30fc\u30f3\u3054\u3068\u306b\u30ec\u30fc\u30c8\u30ea\u30df\u30c3\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u30ed\u30b0\u304b\u3089\u60aa\u610f\u306e\u3042\u308b\u30d1\u30bf\u30fc\u30f3\uff08\u30e9\u30f3\u30c0\u30e0\u5316\u3055\u308c\u305f\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306a\u3069\uff09\u3092\u8a8d\u8b58\u3057\u3001\u65e9\u3044\u6bb5\u968e\u3067\u30b9\u30ed\u30c3\u30c8\u30eb\u3092\u304b\u3051\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u81ea\u5df1DoS\u3082\u9632\u3044\u3067\u3044\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u3067\u6ea2\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u30dd\u30ea\u30b7\u30fc\u30be\u30fc\u30f3\u3092\u5206\u96e2\u3057\u3001\u305d\u306e\u91cd\u307f\u3092\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002\u30b7\u30b0\u30cd\u30c1\u30e3\u306e\u691c\u8a3c\u30a8\u30e9\u30fc\u3092\u304d\u3081\u7d30\u304b\u304f\u6271\u3046 - SERVFAIL\u3092\u5168\u4f53\u7684\u306b\u3067\u306f\u306a\u304f\u3001\u30c1\u30a7\u30fc\u30f3\uff08DS\u3001DNSKEY\u3001RRSIG\uff09\u3078\u306e\u30c6\u30ec\u30e1\u30c8\u30ea\u30fc\u3092\u7528\u3044\u3066\u3001\u539f\u56e0\u3092\u7d20\u65e9\u304f\u7d5e\u308a\u8fbc\u3081\u308b\u3088\u3046\u306b\u3059\u308b\u3002.<\/p>\n\n<h2>\u89b3\u6e2c\u53ef\u80fd\u6027\u306e\u6df1\u5316\uff1a\u30c8\u30ec\u30fc\u30b9\u3001\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3001\u30c6\u30b9\u30c8<\/h2>\n\n<p>\u79c1\u306f\u3053\u3046\u4ed8\u3051\u52a0\u3048\u305f\u3002 <strong>\u6307\u6a19<\/strong> eBPF\u30a4\u30d9\u30f3\u30c8\u306f\u3001\u5927\u91cf\u306e\u30ed\u30b0\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u30c9\u30ed\u30c3\u30d7\u3001\u30ea\u30c8\u30e9\u30a4\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u30af\u30a8\u30ea\u30fc\u30ed\u30b0\u3092\u7121\u4f5c\u70ba\u306b\u533f\u540d\u5316\u3057\u3001\u30d2\u30c3\u30c8\/\u30df\u30b9\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u30af\u30e9\u30b9\uff08NOERROR\u3001NXDOMAIN\u3001SERVFAIL\uff09\u3067\u5206\u3051\u3066\u8a18\u9332\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002P50\/P95\u306b\u52a0\u3048\u3066\u3001\u7279\u306b\u30d4\u30fc\u30af\u6642\u306eP99\/P99.9\u3092\u30e2\u30cb\u30bf\u30fc\u3059\u308b\u3002\u305d\u308c\u305e\u308c\u306e\u5909\u66f4\u306b\u3064\u3044\u3066\u3001\u79c1\u306f\u4eee\u8aac\u3068\u6210\u529f\u57fa\u6e96\uff08\u4f8b\u3048\u3070\u3001-10 ms P95\u3001+5 %\u30d2\u30c3\u30c8\u7387\uff09\u3092\u5b9a\u7fa9\u3057\u3001\u540c\u4e00\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30a6\u30a3\u30f3\u30c9\u30a6\u3067\u306e\u524d\u5f8c\u6bd4\u8f03\u3067\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002.<\/p>\n\n<p>\u79c1\u306f\u73fe\u5b9f\u7684\u306a <strong>\u30ef\u30fc\u30af\u30ed\u30fc\u30c9<\/strong>\u5408\u6210\u30c4\u30fc\u30eb\u306f\u3001\u57fa\u672c\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u5b9f\u969b\u306e\u30c8\u30ec\u30fc\u30b9\u306e\u518d\u751f\u3001\u9023\u9396\u53cd\u5fdc\u3092\u30ab\u30d0\u30fc\u3057\u307e\u3059\u3002\u30ab\u30aa\u30b9\u30fb\u30c6\u30b9\u30c8\u306f\u3001\u9045\u3044\u3001\u3042\u308b\u3044\u306f\u6b20\u9665\u306e\u3042\u308b\u30aa\u30fc\u30bd\u30ea\u30c6\u30a3\u3001\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u3001MTU\u306e\u554f\u984c\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u3002\u30ab\u30ca\u30ea\u30a2\u30fb\u30ea\u30be\u30eb\u30d0\u306f\u6700\u521d\u306b\u65b0\u3057\u3044\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u53d6\u5f97\u3057\u3001\u30a8\u30e9\u30fc\u30d0\u30b8\u30a7\u30c3\u30c8\u3092\u8d85\u3048\u305f\u5834\u5408\u306f\u81ea\u52d5\u7684\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u6700\u9069\u5316\u306f\u53ef\u9006\u7684\u3067\u3042\u308a\u7d9a\u3051\u3001\u30ea\u30b9\u30af\u304c\u3059\u3079\u3066\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u30c1\u30a7\u30c3\u30af\u3055\u308c\u305a\u306b\u7d42\u308f\u308b\u3053\u3068\u306f\u306a\u3044\u3002.<\/p>\n\n<h2>\u5909\u66f4\u3092\u5b89\u5168\u306b\u5c55\u958b\u3059\u308b\uff1a\u30ac\u30d0\u30ca\u30f3\u30b9\u3068\u30e9\u30f3\u30d6\u30c3\u30af<\/h2>\n\n<p>\u79c1\u306f\u8ee2\u304c\u308b <strong>\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u5909\u66f4<\/strong> \u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\uff1a\u307e\u305a\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u3001\u6b21\u306b\u5c0f\u3055\u306a\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u30fb\u30b5\u30d6\u30bb\u30c3\u30c8\u3001\u305d\u3057\u3066\u6700\u7d42\u7684\u306b\u5e83\u7bc4\u56f2\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002\u691c\u8a3c\u3068\u30ea\u30f3\u30c6\u30a3\u30f3\u30b0\u306f\u69cb\u6587\u306e\u843d\u3068\u3057\u7a74\u3092\u9632\u3050\u3002\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u306e\u305f\u3081\u306b\u30e9\u30f3\u30d6\u30c3\u30af\u306f\u5e38\u306b\u6700\u65b0\u306e\u72b6\u614b\u306b\u3057\u3066\u304a\u304f\u3002\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306e\u5897\u52a0\u3001DNSSEC\u306e\u30a8\u30e9\u30fc\u3001DoT\u306e\u5d50\u306b\u5bfe\u3059\u308b\u660e\u78ba\u306a\u30b9\u30c6\u30c3\u30d7\u3002\u30d0\u30c3\u30af\u30a2\u30a6\u30c8\u30d7\u30e9\u30f3\u306f\u3001\u3059\u3079\u3066\u306e\u5909\u66f4\u306b\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u3059\u3002\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304c\u76ee\u6a19\u5024\u3068\u5bfe\u7b56\u3092\u30ea\u30f3\u30af\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u9038\u8131\u306b\u6238\u60d1\u3046\u3053\u3068\u306a\u304f\u3001\u7684\u3092\u5c04\u305f\u884c\u52d5\u3092\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>\u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\uff1a\u30b9\u30d7\u30ea\u30c3\u30c8\u30fb\u30db\u30e9\u30a4\u30ba\u30f3\u3001DNSSEC\u30c1\u30a7\u30fc\u30f3\u3001\u65b0\u3057\u3044RR\u30bf\u30a4\u30d7<\/h2>\n\n<p>\u79c1\u306f\u6b21\u306e\u3053\u3068\u3092\u8a08\u753b\u3057\u3066\u3044\u308b\u3002 <strong>\u30b9\u30d7\u30ea\u30c3\u30c8\u30fb\u30db\u30e9\u30a4\u30ba\u30f3<\/strong> 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