{"id":7487,"date":"2014-05-23T06:00:46","date_gmt":"2014-05-22T21:00:46","guid":{"rendered":"http:\/\/www.suzukikenichi.com\/blog\/?p=7487"},"modified":"2014-05-23T15:49:53","modified_gmt":"2014-05-23T06:49:53","slug":"dns-prefetching","status":"publish","type":"post","link":"https:\/\/www.suzukikenichi.com\/blog\/dns-prefetching\/","title":{"rendered":"DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3067\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3092\u30b9\u30d4\u30fc\u30c9\u30a2\u30c3\u30d7"},"content":{"rendered":"<p class=\"p20-b al-r small\">[\u5bfe\u8c61: \u4e0a\u7d1a]<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u300cDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u300d\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3092\u5229\u7528\u3057\u3066\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u3092\u9ad8\u901f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p class=\"p40-b\"><img decoding=\"async\" itemprop=\"image\" src=\"\/\/www.suzukikenichi.com\/images\/speedup.jpg\" alt=\"\u9ad8\u901f\u3067\u8d70\u308b\u81ea\u52d5\u8eca\" \/><\/p>\n<h2>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3068\u306f<\/h2>\n<p>\u4e0a\u7d1a\u8005\u5411\u3051\u306e\u8a18\u4e8b\u306a\u306e\u3067DNS\u304c\u4f55\u304b\u306e\u8aac\u660e\u306f\u7701\u304d\u307e\u3059\u3002<\/p>\n<p>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u5916\u90e8\u30c9\u30e1\u30a4\u30f3\u540d\uff08\u30db\u30b9\u30c8\u540d\uff09\u306e\u540d\u524d\u89e3\u6c7a\uff08DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\uff09\u3092\u4e8b\u524d\u306b\u5f37\u5236\u3067\u304d\u307e\u3059\u3002<br \/>\n\u30e6\u30fc\u30b6\u30fc\uff08\u30d6\u30e9\u30a6\u30b6\uff09\u304c\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u524d\u306b\u3059\u3067\u306b\u540d\u524d\u89e3\u6c7a\u304c\u5b8c\u4e86\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u8aad\u307f\u8fbc\u307f\u6642\u9593\u306e\u77ed\u7e2e\u3092\u56f3\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>DNS\u306e\u540d\u524d\u89e3\u6c7a\u306b\u304b\u304b\u308b\u6642\u9593\u306f\u5e73\u5747\u3057\u3066200\u30df\u30ea\u79d2\u3068\u308f\u305a\u304b\u3067\u3059\u304c\u3001\u30e2\u30d0\u30a4\u30eb\u56de\u7dda\u3067\u306f\u7121\u8996\u3067\u304d\u308b\u9577\u3055\u3067\u306f\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<br \/>\n\u307e\u305f\u3068\u304d\u3068\u3057\u30661\u79d2\u4ee5\u4e0a\u304b\u304b\u308b\u3053\u3068\u3082\u3042\u308a\u3001\u9045\u5ef6\u306b\u3088\u308b\u8868\u793a\u901f\u5ea6\u306e\u4f4e\u4e0b\u306e\u9632\u6b62\u306b\u5f79\u7acb\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u3001\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u3068\u540c\u6642\u306b\u5b9f\u884c\u3055\u308c\u307e\u305fCPU\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u8ca0\u8377\u304c\u4f4e\u3044\u305f\u3081\u3001\u305d\u306e\u307b\u304b\u306e\u51e6\u7406\u3092\u9045\u3089\u305b\u3066\u3057\u307e\u3046\u5fc3\u914d\u3082\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u306a\u304a\u540d\u524d\u89e3\u6c7a\u3057\u305f\u60c5\u5831\u306fOS\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u306e\u3067\u3001DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u307e\u3060\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3044\u306a\u3044\uff08\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6b8b\u3063\u3066\u3044\u306a\u3044\uff09\u30c9\u30e1\u30a4\u30f3\u540d\u3078\u306e\u901a\u4fe1\u306b\u5bfe\u3057\u3066\u6709\u52b9\u3067\u3059\u3002<\/p>\n<p>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u3001\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u7279\u306b\u5f79\u7acb\u3061\u305d\u3046\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u5916\u90e8\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u53c2\u7167\u30ea\u30f3\u30af\u304c\u305f\u304f\u3055\u3093\u3042\u308b \u2212\u2212 \u307e\u3068\u3081\u8a18\u4e8b\u306a\u3093\u304b\u304c\u8a72\u5f53\u3057\u305d\u3046\u3067\u3059\u3002\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u306e\u30dc\u30bf\u30f3\u3092\u3044\u304f\u3064\u3082\u3092\u8a2d\u7f6e\u3057\u3066\u3044\u308b\u6642\u3082\u52b9\u679c\u304c\u3042\u308a\u305d\u3046\u3067\u3059\u3002<\/li>\n<li>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3057\u3066\u3044\u308b \u2212\u2212 \u30af\u30ea\u30c3\u30af\u306e\u8a08\u6e2c\u306a\u3069\u4f55\u3089\u304b\u306e\u7406\u7531\u3067\u3044\u3063\u305f\u3093\u5185\u90e8\u306e\u30ea\u30f3\u30af\u306b\u30a2\u30af\u30bb\u30b9\u3055\u305b\u3066\u304b\u3089\u5bfe\u8c61\u306e\u5916\u90e8\u30c9\u30e1\u30a4\u30f3\u3078\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u5148\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u540d\u524d\u89e3\u6c7a\u3092\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u305d\u306e\u307b\u304b\u306b\u3082\u4f7f\u7528\u30b1\u30fc\u30b9\u306f\u8003\u3048\u3089\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p class=\"p40-b\">\n2\u3064\u76ee\u306e\u4f8b\u3067\u308f\u304b\u308b\u3088\u3046\u306b\u3001DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306eURL\u304c\u30ea\u30f3\u30af\uff08a\u30bf\u30b0\uff09\u3068\u3057\u3066\u5b58\u5728\u3057\u3066\u3044\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u4efb\u610f\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u540d\u524d\u89e3\u6c7a\u3092\u5f37\u5236\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u7279\u5b9a\u306e\u30db\u30b9\u30c8\u540d\u306b\u5bfe\u3059\u308bDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p>\u300clink rel=&#8221;dns-prefetch&#8221;\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002<br \/>\n\u5177\u4f53\u7684\u306b\u306fhead\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u633f\u5165\u3057\u307e\u3059\u3002<\/p>\n<p><code class=\"green\">&lt;link rel=\"dns-prefetch\" href=\"<span class=\"i\">http:\/\/www.example.com\/<\/span>\" \/&gt;<\/code><br \/>\n<span class=\"small\">\u300c<span class=\"i\">www.example.com<\/span>\u300d\u306f\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3055\u305b\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u540d\uff08\u6b63\u78ba\u306b\u306f\u30db\u30b9\u30c8\u540d\uff09\u3068\u7f6e\u304d\u63db\u3048\u308b\u3002<\/span><\/p>\n<p>\u300chttp:\u300d\u3092\u7701\u7565\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u300c\/\/\u300d\u304b\u3089\u59cb\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p><code class=\"green\">&lt;link rel=\"dns-prefetch\" href=\"<span class=\"i\">\/\/www.example.com\/<\/span>\" \/&gt;<\/code><\/p>\n<p>\u5fc5\u8981\u306a\u5206\u3060\u3051head\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u633f\u5165\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001HTTPS\u30da\u30fc\u30b8\u306eDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001Chrome\u3068Firefox\u3001Opera\u306fDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\nInternet Explorer\u308210\u4ee5\u964d\u3067\u3042\u308c\u3070\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p class=\"p60-t\">\u4ee5\u524d\u306b\u7d39\u4ecb\u3057\u305f<a href=\"\/\/www.suzukikenichi.com\/blog\/using-prerendering-to-speed-up\/\">\u4e8b\u524d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0<\/a>\u3068\u540c\u69d8\u306b\u3001\u5287\u7684\u306a\u30b9\u30d4\u30fc\u30c9\u30a2\u30c3\u30d7\u3092DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306b\u3088\u3063\u3066\u5b9f\u73fe\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3057\u3069\u306e\u74b0\u5883\u3067\u3082\u5f79\u7acb\u3064\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u305d\u308c\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u72b6\u6cc1\u304c\u898b\u3064\u304b\u308c\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u5411\u4e0a\u306e\u305f\u3081\u306b\u63a1\u7528\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306b\u95a2\u3059\u308b\u3088\u308a\u8a73\u3057\u3044\u60c5\u5831\u306f\u3053\u3061\u3089\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"http:\/\/www.chromium.org\/developers\/design-documents\/dns-prefetching\">DNS Prefetching &#8211; The Chromium Projects<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Controlling_DNS_prefetching\">DNS \u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u5236\u5fa1 | MDN<\/a><\/li>\n<li><a href=\"http:\/\/tokkono.cute.coocan.jp\/blog\/slow\/index.php\/programming\/boostup-socials-with-dns-prefetch\/\">\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u306e\u8aad\u307f\u8fbc\u307f\u306fDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u307e\u3068\u3081\u8a2d\u5b9a\u304c\u304a\u5f97 | \u3086\u3063\u304f\u308a\u3068\u2026<\/a><\/li>\n<\/ul>\n<p class=\"p40-t\">P.S.<br \/>\n\u3061\u306a\u307f\u306b\u50d5\u304cDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u77e5\u3063\u305f\u304d\u3063\u304b\u3051\u306fGoogle\u306e\u30d8\u30eb\u30d7\u30da\u30fc\u30b8\u3067\u3059\u3002<br \/>\n\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306b\u898b\u6163\u308c\u306a\u3044\u30bf\u30b0\u304c\u5165\u3063\u3066\u3044\u305f\u306e\u3092\u898b\u3064\u3051\u3066\u8abf\u3079\u307e\u3057\u305f\uff08\u666e\u901a\u306f\u30bd\u30fc\u30b9\u306a\u3093\u3066\u898b\u306a\u3044\uff1fw\uff09\u3002<br \/>\nGoogle\u306f\u30a6\u30a7\u30d6\u306e\u9ad8\u901f\u5316\u3092\u63a8\u5968\u3057\u3066\u3044\u308b\u3060\u3051\u3042\u3063\u3066\u3001\u81ea\u5206\u305f\u3061\u3067\u3082\u3055\u307e\u3056\u307e\u306a\u6280\u8853\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u300cDNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u300d\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3092\u5229\u7528\u3057\u3066\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u3092\u9ad8\u901f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3059\u308b\u3002DNS\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u3092\u5229\u7528\u3059\u308b\u3068\u3001\u30db\u30b9\u30c8\u540d\u306e\u540d\u524d\u89e3\u6c7a\u3092\u4e8b\u524d\u306b\u5f37\u5236\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u8aad\u307f\u8fbc\u307f\u6642\u9593\u306e\u77ed\u7e2e\u3092\u56f3\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,758],"tags":[654,1131],"class_list":["post-7487","post","type-post","status-publish","format-standard","category-google-seo","category-site-design-and-conversion","tag-load-times","tag-dns"],"_links":{"self":[{"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/posts\/7487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/comments?post=7487"}],"version-history":[{"count":0,"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/posts\/7487\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/media?parent=7487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/categories?post=7487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.suzukikenichi.com\/blog\/wp-json\/wp\/v2\/tags?post=7487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}