{"id":28032,"date":"2020-05-19T09:33:13","date_gmt":"2020-05-19T16:33:13","guid":{"rendered":"https:\/\/kinsta.com\/?post_type=learn&#038;p=5001"},"modified":"2026-03-04T00:28:38","modified_gmt":"2026-03-03T15:28:38","slug":"what-is-http2","status":"publish","type":"learn","link":"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/","title":{"rendered":"HTTP\/2\u3068\u306f\uff1f\uff08\u30b9\u30fc\u30d1\u30fc\u30ac\u30a4\u30c9\uff09"},"content":{"rendered":"<p>\u30cf\u30a4\u30d1\u30fc\u30c6\u30ad\u30b9\u30c8\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\uff08Hyper Text Transfer Protocol \u3001\u7565\u79f0 HTTP\uff09\u306f\u3001World Wide Web\u306e\u57fa\u76e4\u3067\u3042\u308b\u30b7\u30f3\u30d7\u30eb\u3067\u9000\u5c48\u3067\u3001\u62d8\u675f\u5c64\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ec\u30a4\u30e4\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001HTTP\u306f\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u5168\u4f53\u3067\u5229\u7528\u53ef\u80fd\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u30ea\u30bd\u30fc\u30b9\u306e\u53d6\u5f97\u3092\u53ef\u80fd\u306b\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u6570\u5341\u5e74\u306b\u308f\u305f\u3063\u3066\u9032\u5316\u3057\u3066\u304d\u305fHTTP\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u7528\u306e\u9ad8\u901f\u3067\u5b89\u5168\u3067\u8c4a\u304b\u306a\u30e1\u30c7\u30a3\u30a2\u3092\u914d\u9054\u3057\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061<a href=\"https:\/\/kinsta.com\/jp\/\" target=\"_blank\" rel=\"noopener noreferrer\">Kinsta<\/a>\u306f\u3001\u5f53\u793e\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u8aad\u307f\u8fbc\u307f\u6642\u9593\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u306b\u5922\u4e2d\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u4ee5\u524d\u306b\u3053\u306e\u30c8\u30d4\u30c3\u30af\u306b\u95a2\u3059\u308b\u591a\u6570\u306e\u30ac\u30a4\u30c9\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u901f\u5ea6\u306e\u6700\u9069\u5316\u306b\u95a2\u3059\u308b\u521d\u5fc3\u8005\u5411\u3051\u30ac\u30a4\u30c9<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>Kinsta\u306f\u5e38\u306b\u6700\u65b0\u6280\u8853\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3092\u91cd\u8996\u3057\u3066\u304a\u308a\u3001Kinsta\u306e\u30b5\u30a4\u30c8\u304a\u3088\u3073\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u5168\u4f53\u3092HTTP\/2\u3067\u904b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u3001\u958b\u767a\u8005\u3001\u305d\u3057\u3066\u30a4\u30ce\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u8ffd\u6c42\u3059\u308b\u4f01\u696d\u306b\u5411\u3051\u3066\u3001HTTP\/2\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u57fa\u790e\u77e5\u8b58\u304b\u3089\u9ad8\u5ea6\u306a\u30c8\u30d4\u30c3\u30af\u307e\u3067\u3001HTTP\/2\u306b\u95a2\u3059\u308b\u3042\u3089\u3086\u308b\u60c5\u5831\u3092\u7db2\u7f85\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u672c\u30ac\u30a4\u30c9\u3067\u306f\u3001HTTP\/2\u306e\u6b21\u306e\u4e3b\u8981\u306a\u5074\u9762\u306b\u3064\u3044\u3066\u3054\u8aac\u660e\u3057\u307e\u3059\u3002<\/h3>\n<ul class=\"chaptermenu\">\n<li><a href=\"#what_is_http2\">HTTP\/2\u3068\u306f\uff1f<\/a><\/li>\n<li><a href=\"#goal_of_creating_http2\">HTTP\/2\u3092\u4f5c\u6210\u3059\u308b\u76ee\u7684<\/a><\/li>\n<li><a href=\"#what_was_wrong_with_http1\">HTTP1.1\u306e\u4f55\u304c\u554f\u984c\u3067\u3057\u305f\u304b\uff1f<\/a><\/li>\n<li><a href=\"#http2_feature_upgrades\">HTTP\/2\u306e\u6a5f\u80fd\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9<\/a><\/li>\n<li><a href=\"#feature_similarities_between_http1_spdy_http2\">HTTP1.x\u3001SPDY\u3001HTTP\/2\u306e\u6a5f\u80fd\u306e\u985e\u4f3c\u70b9<\/a><\/li>\n<li><a href=\"#how_does_http2_work_with_https\">HTTP\/2\u3068HTTPS\u306e\u9023\u643a<\/a><\/li>\n<li><a href=\"#main_benefits_of_http2\">HTTP\/2\u306e\u4e3b\u306a\u5229\u70b9<\/a><\/li>\n<li><a href=\"#performance_benchmark_comparison_http1_spdy_http2\">HTTPS\u3001SPDY\u3001\u305d\u3057\u3066HTTP\/2\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30d9\u30f3\u30c1\u30de\u30fc\u30af<\/a><\/li>\n<li><a href=\"#http2_browser_support_availability\">HTTP\/2\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\u3068\u53ef\u7528\u6027<\/a><\/li>\n<li><a href=\"#how_you_can_start_using_http2\">HTTP\/2\u306e\u4f7f\u7528\u3092\u958b\u59cb\u3059\u308b\u306b\u306f<\/a><\/li>\n<\/ul>\n<h2><a id=\"what_is_http2\"><\/a>HTTP\/2\u3068\u306f\uff1f<\/h2>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Hypertext_Transfer_Protocol\" target=\"_blank\" rel=\"noopener noreferrer\">HTTP<\/a>\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9593\u3067\u9ad8\u3044\u30ec\u30d9\u30eb\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u6a5f\u80fd\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u30b7\u30f3\u30d7\u30eb\u3055\u3092\u5ff5\u982d\u306b\u7f6e\u3044\u3066\u3001\u672c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u8a2d\u8a08\u3057\u305fWorld Wide Web\u306e\u30d1\u30a4\u30aa\u30cb\u30a2\u3067\u3042\u308b<a href=\"https:\/\/twitter.com\/timberners_lee\" target=\"_blank\" rel=\"noopener noreferrer\">Tim Berners-Lee<\/a>\u306b\u3088\u3063\u3066\u6700\u521d\u306b\u63d0\u6848\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u6700\u521d\u306b\u6587\u66f8\u5316\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u306eHTTP\u306f\u30011991\u5e74\u306bHTTP0.9\u3068\u3044\u3046\u540d\u79f0\u3067\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3001\u305d\u306e\u5f8c\u306e1996\u5e74\u306bHTTP1.0\u304c\u6b63\u5f0f\u306b\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u30021997\u5e74\u306bHTTP1.1\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u305d\u308c\u79fb\u884c\u306b\u6539\u826f\u306f\u307b\u3068\u3093\u3069\u52a0\u3048\u3089\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"width: 966px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http-timeline.png\" alt=\"HTTP\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\" width=\"966\" height=\"153\"><figcaption class=\"wp-caption-text\">HTTP\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/figcaption><\/figure>\n<p>2015\u5e742\u6708\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u7279\u5225\u8abf\u67fb\u59d4\u54e1\u4f1a\uff08Internet Engineering Task Force\u3001\u7701\u7565<a href=\"https:\/\/www.ietf.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">IETF<\/a>\uff09\u306eHTTP\u4f5c\u696d\u90e8\u4f1a\u306fHTTP\u3092\u6539\u8a02\u3057\u3001\u672c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306e2\u756a\u76ee\u306e\u30e1\u30b8\u30e3\u30fc\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bHTTP\/2\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u30022015\u5e745\u6708\u3001Google\u306eHTTP\u4e92\u63db\u306e<a href=\"https:\/\/en.wikipedia.org\/wiki\/SPDY\" target=\"_blank\" rel=\"noopener noreferrer\">SPDY<\/a>\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u5bfe\u5fdc\u3057\u3066\u3001HTTP\/2\u5b9f\u88c5\u4ed5\u69d8\u304c\u6b63\u5f0f\u306b\u6a19\u6e96\u5316\u3055\u308c\u307e\u3057\u305f\u3002HTTP\/2\u3068SPDY\u306e\u6bd4\u8f03\u306f\u3001\u672c\u30ac\u30a4\u30c9\u5168\u4f53\u3067\u7d9a\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306f\uff1f<\/h3>\n<p>HTTP\/2\u3068HTTP1\u306e\u8b70\u8ad6\u306e\u5f8c\u3001\u672c\u8a18\u4e8b\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u300c\u30d7\u30ed\u30c8\u30b3\u30eb\u300d\u3068\u3044\u3046\u7528\u8a9e\u306e\u77ed\u3044\u8aac\u660e\u3082\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u304c\u60c5\u5831\u3092\u8981\u6c42\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306a\u3069\uff09\u3068\u30b5\u30fc\u30d0\u30fc\uff08\u8981\u6c42\u3055\u308c\u305f\u60c5\u5831\u3092\u542b\u3080\u30de\u30b7\u30f3\uff09\u9593\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u7ba1\u7406\u3059\u308b\u4e00\u9023\u306e\u30eb\u30fc\u30eb\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u901a\u5e38\u3001\u30d8\u30c3\u30c0\u30fc\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u3001\u30d5\u30c3\u30bf\u30fc\u306e3\u3064\u306e\u4e3b\u8981\u90e8\u5206\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u524d\u306b\u914d\u7f6e\u3055\u308c\u305f\u30d8\u30c3\u30c0\u30fc\u306b\u306f\u3001\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3068\u5b9b\u5148\u30a2\u30c9\u30ec\u30b9\u3001\u304a\u3088\u3073\u30da\u30a4\u30ed\u30fc\u30c9\u306b\u95a2\u3059\u308b\u305d\u306e\u4ed6\u306e\u60c5\u5831\uff08\u30b5\u30a4\u30ba\u3084\u30bf\u30a4\u30d7\uff09\u306a\u3069\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u9001\u4fe1\u3055\u308c\u308b\u60c5\u5831\u306e\u3053\u3068\u3067\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u5f8c\u306b\u914d\u7f6e\u3055\u308c\u305f\u30d5\u30c3\u30bf\u30fc\u306f\u3001\u5236\u5fa1\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u306e\u8981\u6c42\u3092\u30d8\u30c3\u30c0\u30fc\u3068\u4e00\u7dd2\u306b\u76ee\u7684\u306e\u53d7\u4fe1\u8005\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u30c7\u30fc\u30bf\u304c\u30a8\u30e9\u30fc\u306a\u3057\u3067\u9001\u4fe1\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 980px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/mail-http2.png\" alt=\"HTTP\/2\u306e\u30e1\u30fc\u30eb\" width=\"980\" height=\"300\"><figcaption class=\"wp-caption-text\">HTTP\/2\u306e\u30e1\u30fc\u30eb<\/figcaption><\/figure>\n<p>\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u90f5\u4fbf\u30b5\u30fc\u30d3\u30b9\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u624b\u7d19\uff08\u30da\u30a4\u30ed\u30fc\u30c9\uff09\u306f\u3001\u5b9b\u5148\u4f4f\u6240\u624b\u304c\u8a18\u8f09\u3055\u308c\u305f\u5c01\u7b52\uff08\u30d8\u30c3\u30c0\u30fc\uff09\u306b\u633f\u5165\u3055\u308c\u3001\u767a\u9001\u524d\u306b\u63a5\u7740\u5264\u3068\u5207\u624b\uff08\u30d5\u30c3\u30bf\u30fc\uff09\u3067\u5c01\u5370\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u300c0\u300d\u3068\u300c1\u300d\u3068\u3044\u3046\u6570\u5024\u3068\u3057\u3066\u30c7\u30b8\u30bf\u30eb\u60c5\u5831\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u306f\u305d\u308c\u307b\u3069\u5358\u7d14\u3067\u306f\u306a\u304f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u306e\u7206\u767a\u7684\u306a\u6210\u9577\u306b\u4f34\u3063\u3066\u51fa\u73fe\u3059\u308b\u6280\u8853\u9032\u6b69\u306b\u5bfe\u5fdc\u3057\u3066\u3001\u65b0\u305f\u306a\u9769\u65b0\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>HTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3082\u3068\u3082\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u300cGET\u300d\u3068\u3001\u8981\u6c42\u3055\u308c\u305f\u60c5\u5831\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u914d\u4fe1\u3059\u308b\u300cPOST\u300d\u3068\u3044\u30462\u3064\u306e\u57fa\u672c\u7684\u306a\u30b3\u30de\u30f3\u30c9\u3067\u69cb\u6210\u3055\u308c\u307e\u3057\u305f\u3002\u30c7\u30fc\u30bf\u3092GET\u3057\u3066\u5fdc\u7b54\u3092POST\u3059\u308b\u5358\u7d14\u3067\u660e\u3089\u304b\u306b\u9000\u5c48\u306a\u30b3\u30de\u30f3\u30c9\u30bb\u30c3\u30c8\u306f\u3001\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u57fa\u76e4\u3082\u5f62\u6210\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u306e\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3068\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u3082\u30461\u3064\u306e\u5bfe\u7b56\u3067\u3042\u308a\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30d7\u30ec\u30bc\u30f3\u30b9\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306bHTTP\/2\u306e\u5b9f\u88c5\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2><a id=\"goal_of_creating_http2\"><\/a>HTTP\/2\u3092\u4f5c\u6210\u3059\u308b\u76ee\u7684<\/h2>\n<p>1990\u5e74\u4ee3\u521d\u982d\u306b\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3066\u4ee5\u6765\u3001HTTP\u306e\u4e3b\u8981\u306a\u6539\u5b9a\u306f\u3042\u307e\u308a\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306eHTTP1.1\u306f\u300115\u5e74\u4ee5\u4e0a\u306b\u308f\u305f\u3063\u3066\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u306b\u8ca2\u732e\u3057\u3066\u3044\u307e\u3059\u3002\u52d5\u7684\u306a\u60c5\u5831\u66f4\u65b0\u3001\u30ea\u30bd\u30fc\u30b9\u6d88\u8cbb\u306e\u9ad8\u3044\u30de\u30eb\u30c1\u30e1\u30c7\u30a3\u30a2\u30b3\u30f3\u30c6\u30f3\u30c4\u3001\u304a\u3088\u3073\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8981\u6c42\u3059\u308b\u73fe\u5728\u306e\u6642\u4ee3\u306e\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306f\u3001\u53e4\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u300c\u30ec\u30ac\u30b7\u30fc\u300d\u30ab\u30c6\u30b4\u30ea\u306b\u5206\u985e\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u50be\u5411\u306b\u3088\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u3001HTTP\/2\u306e\u91cd\u8981\u306a\u5909\u66f4\u70b9\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 365px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" title=\"\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/website-basic.png\" alt=\"\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u57fa\u672c\" width=\"365\" height=\"222\"><figcaption class=\"wp-caption-text\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9<\/figcaption><\/figure>\n<p>\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306eHTTP\u306e\u7814\u7a76\u958b\u767a\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u8ffd\u52a0\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u3001\u5358\u4e00\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u95a2\u9023\u3059\u308b\u3053\u3068\u306e\u5c11\u306a\u30443\u3064\u306e\u54c1\u8cea\u3092\u4e2d\u5fc3\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u76ee\u6a19\u306f\u3001\u591a\u91cd\u5316\u3001\u5727\u7e2e\u3001\u8981\u6c42\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u306a\u3069\u306e\u624b\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u8981\u6c42\u306e\u51e6\u7406\u306b\u304a\u3051\u308b\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u524a\u6e1b\u3059\u308b\u6a5f\u80fd\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u9054\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30d5\u30ed\u30fc\u5236\u5fa1\u3001\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3001\u30a8\u30e9\u30fc\u51e6\u7406\u306a\u3069\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001\u958b\u767a\u8005\u304cWeb\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u56de\u5fa9\u529b\u3092\u78ba\u4fdd\u3067\u304d\u308b\u3088\u3046\u306bHTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u5f37\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u96c6\u7d04\u7684\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u6700\u521d\u306b\u8981\u6c42\u3057\u305f\u3088\u308a\u3082\u591a\u304f\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u914d\u4fe1\u3057\u3066\u52b9\u7387\u7684\u306b\u5fdc\u7b54\u3067\u304d\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306b\u5b8c\u5168\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u307e\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u4ecb\u5165\u3057\u3066\u60c5\u5831\u3092\u8981\u6c42\u3057\u7d9a\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001HTTP\/2\u306e\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u6a5f\u80fd\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30da\u30fc\u30b8\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u3059\u3067\u306b\u4fdd\u5b58\u3055\u308c\u305f\u60c5\u5831\u4ee5\u5916\u306e\u5b8c\u5168\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3067\u5fdc\u7b54\u3067\u304d\u307e\u3059\u3002HTTP\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u5727\u7e2e\u306b\u3088\u308a\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u3001\u5404\u30d6\u30e9\u30a6\u30b6\u30fc\u8981\u6c42\u3068\u30b5\u30fc\u30d0\u30fc\u5fdc\u7b54\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<p>HTTP\/2\u306e\u5909\u66f4\u70b9\u306f\u3001HTTP1.1\u3068\u306e\u76f8\u4e92\u904b\u7528\u6027\u3068\u4e92\u63db\u6027\u3092\u7dad\u6301\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002HTTP\/2\u306e\u5229\u70b9\u306f\u3001\u5b9f\u9a13\u306b\u57fa\u3065\u3044\u3066\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u5897\u52a0\u3057\u3001HTTP1.1\u3068\u306e\u6bd4\u8f03\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u95a2\u9023\u306e\u8ab2\u984c\u306b\u5bfe\u51e6\u3059\u308b\u6a5f\u80fd\u306f\u3001\u9577\u671f\u7684\u306bHTTP\/2\u306e\u9032\u5316\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002<\/p>\n<blockquote><p>\u300c\u2026HTTP\u3092\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u73fe\u5728\u4f7f\u7528\u3057\u3066\u3044\u308b\u30e1\u30bd\u30c3\u30c9\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3001\u304a\u3088\u3073\u30d8\u30c3\u30c0\u30fc\u306e\u5927\u534a\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001HTTP\u306e\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u300d\u3067\u306e\u4f7f\u7528\u65b9\u6cd5\u3092\u518d\u5b9a\u7fa9\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u81ea\u4f53\u306b\u3088\u308a\u512a\u3057\u304f\u3057\u307e\u3059&#8230;\u300d<span class=\"section2_quotebox_name_text\"><a href=\"https:\/\/twitter.com\/mnot\" target=\"_blank\" rel=\"noopener noreferrer\">Mark Nottingham<\/a>\u3001IETF\u306e\u8b70\u9577\u3001W3C TAG\u306e\u30e1\u30f3\u30d0\u30fc\u3002<\/span> <a class=\"quote_source\" href=\"http:\/\/www.slideshare.net\/heavybit\/heavybit-presents-ilya-grigorik-on\" target=\"_blank\" rel=\"noopener noreferrer\">\u51fa\u5178<\/a><\/p><\/blockquote>\n<p>HTTP\u306e\u6700\u65b0\u7248\u306fHTTP1.1\u306e\u62e1\u5f35\u6a5f\u80fd\u3068\u3057\u3066\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u3001\u8fd1\u3044\u3046\u3061\u306bHTTP1.1\u3092\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u306f\u671f\u5f85\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002HTTP\/2\u306e\u5b9f\u88c5\u3067\u306f\u3001HTTP1.1\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u3059\u3079\u3066\u306e\u6697\u53f7\u5316\u30bf\u30a4\u30d7\u306e\u81ea\u52d5\u30b5\u30dd\u30fc\u30c8\u304c\u6709\u52b9\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u8fd1\u3044\u5c06\u6765\u3001\u3088\u308a\u512a\u308c\u305f\u4ee3\u66ff\u7b56\u307e\u305f\u306f\u8ffd\u52a0\u306e\u6697\u53f7\u5316\u4e92\u63db\u6027\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3078\u306e\u6249\u304c\u958b\u304b\u308c\u307e\u3059\u3002\u4e00\u65b9\u3001HTTP\/2\u3068HTTP1\u3001\u307e\u305f\u306fSPDY\u3068HTTP\/2\u306e\u6bd4\u8f03\u3067\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u4fe1\u983c\u6027\u306a\u3069\u306e\u70b9\u3067\u52dd\u3063\u3066\u3044\u308b\u306e\u306f\u6700\u65b0\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u65b9\u3067\u3059\u3002<\/p>\n<figure style=\"width: 400px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http-requests.png\" alt=\" HTTP\u8981\u6c42\" width=\"400\" height=\"195\"><figcaption class=\"wp-caption-text\">HTTP\u8981\u6c42<\/figcaption><\/figure>\n<h2><a id=\"what_was_wrong_with_http1\"><\/a>HTTP1.1\u306e\u4f55\u304c\u554f\u984c\u3067\u3057\u305f\u304b\uff1f<\/h2>\n<p>HTTP1.1\u306f\u3001TCP\u63a5\u7d9a\u3054\u3068\u306b1\u3064\u306e\u672a\u51e6\u7406\u306e\u8981\u6c42\u306e\u307f\u3092\u51e6\u7406\u3059\u308b\u3088\u3046\u306b\u5236\u9650\u3055\u308c\u3066\u3044\u305f\u305f\u3081\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u306f\u8907\u6570\u306e\u8981\u6c42\u3092\u540c\u6642\u306b\u51e6\u7406\u3059\u308b\u3088\u3046\u306b\u8907\u6570\u306eTCP\u63a5\u7d9a\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u540c\u6642\u306b\u4f7f\u7528\u3055\u308c\u308bTCP\u63a5\u7d9a\u304c\u591a\u3059\u304e\u308b\u3068\u3001TCP\u306e\u6e0b\u6ede\u304c\u767a\u751f\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u4e0d\u5f53\u306a\u72ec\u5360\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u8907\u6570\u306e\u63a5\u7d9a\u3092\u4f7f\u7528\u3057\u3066\u8ffd\u52a0\u306e\u8981\u6c42\u3092\u51e6\u7406\u3059\u308b\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306f\u3001\u5229\u7528\u53ef\u80fd\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u3092\u591a\u304f\u6d88\u8cbb\u3057\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002<\/p>\n<figure style=\"width: 400px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full \" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http-requests.png\" alt=\"HTTP\u8981\u6c42\" width=\"400\" height=\"195\"><figcaption class=\"wp-caption-text\">HTTP\u8981\u6c42<\/figcaption><\/figure>\n<p>\u540c\u3058\u30d6\u30e9\u30a6\u30b6\u30fc\u304b\u3089\u8907\u6570\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u767a\u884c\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u4f1d\u9001\u30ef\u30a4\u30e4\u3067\u30c7\u30fc\u30bf\u304c\u91cd\u8907\u3057\u3001\u30a8\u30f3\u30c9\u30ce\u30fc\u30c9\u3067\u76ee\u7684\u306e\u60c5\u5831\u3092\u30a8\u30e9\u30fc\u306a\u3057\u306b\u62bd\u51fa\u3059\u308b\u305f\u3081\u306b\u8ffd\u52a0\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u696d\u754c\u306f\u3082\u3061\u308d\u3093\u3001\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u9023\u7d50\u3001\u30c7\u30fc\u30bf\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3001\u30b9\u30d7\u30e9\u30a4\u30c8\u306a\u3069\u306e\u624b\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u3001\u3053\u308c\u3089\u306e\u5236\u7d04\u3092\u53d6\u308a\u9664\u304b\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u57fa\u76e4\u3068\u306a\u308bTCP\u63a5\u7d9a\u306eHTTP1.1\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u975e\u52b9\u7387\u7684\u306a\u4f7f\u7528\u306f\u3001\u30ea\u30bd\u30fc\u30b9\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u304c\u9069\u5207\u3067\u306a\u3044\u305f\u3081\u3001\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u8907\u96d1\u3055\u3001\u6a5f\u80fd\u6027\u3001\u304a\u3088\u3073\u30b9\u30b3\u30fc\u30d7\u306e\u70b9\u3067\u6210\u9577\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6307\u6570\u95a2\u6570\u7684\u306a\u4f4e\u4e0b\u306e\u539f\u56e0\u3068\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 880px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" title=\"HTTP\/2\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-domain-sharding.png\" alt=\"HTTP\/2\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\" width=\"880\" height=\"232\"><figcaption class=\"wp-caption-text\">\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0<\/figcaption><\/figure>\n<p>Web\u306f\u3001\u5f93\u6765\u306eHTTP\u30d9\u30fc\u30b9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u80fd\u529b\u3092\u306f\u308b\u304b\u306b\u8d85\u3048\u3066\u9032\u5316\u3057\u307e\u3057\u305f\u300210\u5e74\u4ee5\u4e0a\u524d\u306b\u958b\u767a\u3055\u308c\u305fHTTP1.1\u306e\u6027\u8cea\u306f\u3001\u6065\u305a\u304b\u3057\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u7570\u5e38\u3078\u306e\u6249\u3092\u958b\u304d\u307e\u3057\u305f\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001HTTP 1.1\u306b\u306f\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8ID\u6a5f\u80fd\u304c\u306a\u3044\u305f\u3081\u3001\u30af\u30c3\u30ad\u30fc\u3092\u30cf\u30c3\u30af\u3059\u308b\u3068\u3001\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u8005\u306f\u4ee5\u524d\u306e\u4f5c\u696d\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u518d\u5229\u7528\u3057\u3066\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002HTTP\/2\u3067\u3082\u540c\u69d8\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u554f\u984c\u304c\u5f15\u304d\u7d9a\u304d\u767a\u751f\u3057\u307e\u3059\u304c\u3001\u65b0\u3057\u3044\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001<a href=\"http:\/\/http2.github.io\/http2-spec\/#TLSUsage\" target=\"_blank\" rel=\"noopener noreferrer\">\u65b0\u3057\u3044TLS\u6a5f\u80fd<\/a>\u306e\u6539\u5584\u306a\u3069\u3001\u3088\u308a\u5b89\u5168\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3067\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2><a id=\"http2_feature_upgrades\"><\/a>HTTP\/2\u306e\u6a5f\u80fd\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9<\/h2>\n<h3>\u591a\u91cd\u5316\u30b9\u30c8\u30ea\u30fc\u30e0<\/h3>\n<p>\u30b5\u30fc\u30d0\u30fc\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9593\u3067\u4ea4\u63db\u3055\u308c\u308bHTTP\/2\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u3066\u9001\u4fe1\u3055\u308c\u308b\u30c6\u30ad\u30b9\u30c8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u53cc\u65b9\u5411\u30b7\u30fc\u30b1\u30f3\u30b9\u306f\u3001\u300c\u30b9\u30c8\u30ea\u30fc\u30e0\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u4ee5\u524d\u306eHTTP\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u3001\u4e00\u5ea6\u306b1\u3064\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u307f\u3092\u9001\u4fe1\u3067\u304d\u3001\u5404\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u9001\u4fe1\u9593\u306b\u6642\u9593\u9045\u5ef6\u3082\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>1\u3064\u305a\u3064\u9001\u4fe1\u3057\u305f\u500b\u3005\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u3067\u5927\u91cf\u306e\u30e1\u30c7\u30a3\u30a2\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53d7\u4fe1\u3059\u308b\u3053\u3068\u306f\u3001\u975e\u52b9\u7387\u7684\u3067\u3042\u308b\u3057\u3001\u30ea\u30bd\u30fc\u30b9\u3082\u6d88\u8cbb\u3057\u307e\u3059\u3002 HTTP\/2\u306e\u5909\u66f4\u306b\u3088\u308a\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u65b0\u3057\u3044\u30d0\u30a4\u30ca\u30ea\u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u30ec\u30a4\u30e4\u30fc\u304c\u78ba\u7acb\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u30ec\u30a4\u30e4\u30fc\u306b\u3088\u308a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u306fHTTP\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u72ec\u7acb\u3057\u305f\u3001\u7ba1\u7406\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30ea\u30fc\u30d6\u3055\u308c\u305f\u30d5\u30ec\u30fc\u30e0\u30b7\u30fc\u30b1\u30f3\u30b9\u306b\u5206\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u60c5\u5831\u306f\u53cd\u5bfe\u5074\u3067\u518d\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure style=\"width: 400px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-streams.png\" alt=\"HTTP\/2\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\" width=\"400\" height=\"540\"><figcaption class=\"wp-caption-text\">HTTP\/2\u306e\u30b9\u30c8\u30ea\u30fc\u30e0<\/figcaption><\/figure>\n<p>\u30d0\u30a4\u30ca\u30ea\u30d5\u30ec\u30fc\u30e0\u5f62\u5f0f\u306f\u3001\u9023\u7d9a\u3059\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u9593\u306e\u5f85\u3061\u6642\u9593\u306a\u3057\u306b\u3001\u8907\u6570\u306e\u540c\u6642\u30aa\u30fc\u30d7\u30f3\u306e\u72ec\u7acb\u3057\u305f\u53cc\u65b9\u5411\u30b7\u30fc\u30b1\u30f3\u30b9\u306e\u4ea4\u63db\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u539f\u56e0\u306b\u3001HTTP\/2\u306b\u306f\u4ee5\u4e0b\u3067\u8aac\u660e\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u540c\u6642\u306e\u591a\u91cd\u5316\u3055\u308c\u305f\u8981\u6c42\u3068\u5fdc\u7b54\u306f\u4e92\u3044\u306b\u652f\u969c\u3092\u304d\u305f\u3057\u307e\u305b\u3093\u3002<\/li>\n<li>\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u5358\u4e00\u306eTCP\u63a5\u7d9a\u3092\u4f7f\u7528\u3057\u3066\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u3092\u52b9\u679c\u7684\u306b\u5229\u7528\u3057\u307e\u3059\u3002<\/li>\n<li>\u30a4\u30e1\u30fc\u30b8\u30b9\u30d7\u30e9\u30a4\u30c8\u3001\u9023\u7d50\u3001\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u306a\u3069\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4ed6\u306e\u30a8\u30ea\u30a2\u3092\u5371\u967a\u306b\u3055\u3089\u3059\u4e0d\u8981\u306a<a href=\"http:\/\/chimera.labs.oreilly.com\/books\/1230000000545\/ch13.html#ELIMINATE_REQUEST_BYTES\" target=\"_blank\" rel=\"noopener noreferrer\">\u6700\u9069\u5316\u306e\u5de5\u592b<\/a>\u3092\u9069\u7528\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u5f85\u3061\u6642\u9593\u306e\u77ed\u7e2e\u3001\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306e\u63b2\u8f09\u9806\u4f4d\u306e\u5411\u4e0a\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073IT\u30ea\u30bd\u30fc\u30b9\u306b\u95a2\u3059\u308bOpEx\u304a\u3088\u3073CapEx\u306e\u524a\u6e1b\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u8907\u6570\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u304b\u3089\u306e\u30c7\u30fc\u30bf\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u6df7\u5408\u3055\u308c\u3001\u5358\u4e00\u306eTCP\u63a5\u7d9a\u3067\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u30d1\u30c3\u30b1\u30fc\u30b8\u306f\u53d7\u4fe1\u5074\u3067\u5206\u5272\u3055\u308c\u3001\u500b\u5225\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u3057\u3066\u63d0\u793a\u3055\u308c\u307e\u3059\u3002HTTP\u30d0\u30fc\u30b8\u30e7\u30f31.1\u4ee5\u524d\u3092\u4f7f\u7528\u3057\u3066\u540c\u6642\u306b\u8907\u6570\u306e\u8981\u6c42\u3092\u9001\u4fe1\u3059\u308b\u306b\u306f\u3001\u8907\u6570\u306eTCP\u63a5\u7d9a\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u3088\u308a\u9ad8\u901f\u3067\u9001\u4fe1\u3057\u3066\u3082\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5168\u4f53\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<h3>HTTP\/2 \u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5<\/h3>\n<p>\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8981\u6c42\u3055\u308c\u3066\u3044\u306a\u3044\u304c\u5c06\u6765\u306e\u8981\u6c42\u3067\u4e88\u671f\u3055\u308c\u308b\u8ffd\u52a0\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u53ef\u80fd\u306a\u60c5\u5831\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u4fe1\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u300cX\u300d\u3068\u3044\u3046\u30ea\u30bd\u30fc\u30b9\u3092\u8981\u6c42\u3057\u305f\u304c\u3001\u300cY\u300d\u3068\u3044\u3046\u30ea\u30bd\u30fc\u30b9\u304c\u8981\u6c42\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3067\u53c2\u7167\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8a72\u5f53\u3059\u308b\u8981\u6c42\u3092\u5f85\u3064\u306e\u3067\u306f\u306a\u304f\u3001\u300cX\u300d\u3068\u3068\u3082\u306b\u300cY\u300d\u3082\u30d7\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure style=\"width: 500px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-push.png\" alt=\"HTTP\/2 \u30d7\u30c3\u30b7\u30e5\" width=\"500\" height=\"244\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u30d7\u30c3\u30b7\u30e5<\/figcaption><\/figure>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u300cY\u300d\u3092\u5c06\u6765\u306e\u4f7f\u7528\u306e\u305f\u3081\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002 \u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u308a\u3001\u8981\u6c42\u3068\u5fdc\u7b54\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u304c\u7bc0\u7d04\u3055\u308c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9045\u5ef6\u304c\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u306f\u3001\u5f53\u521dGoogle\u306eSPDY\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002 :path\u306a\u3069\u306e\u7591\u4f3c\u30d8\u30c3\u30c0\u30fc\u3092\u542b\u3080\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u8b58\u5225\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u53ef\u80fd\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u60c5\u5831\u306e\u30d7\u30c3\u30b7\u30e5\u3092\u958b\u59cb\u3067\u304d\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304cHTTP\/2\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u53ef\u80fd\u306a\u30ea\u30bd\u30fc\u30b9\u3092\u30d7\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3092\u660e\u793a\u7684\u306b\u8a31\u53ef\u3059\u308b\u304b\u3001\u7279\u5b9a\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u8b58\u5225\u5b50\u3067\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u7d42\u4e86\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u306a\u3069\u306eHTTP\/2\u306e\u5909\u66f4\u70b9\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7a4d\u6975\u7684\u306b\u66f4\u65b0\u3057\u305f\u308a\u7121\u52b9\u5316\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u300c\u30ad\u30e3\u30c3\u30b7\u30e5\u30d7\u30c3\u30b7\u30e5\u300d\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002\u9577\u671f\u7684\u306a\u5f71\u97ff\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u3068\u3063\u3066\u597d\u307e\u3057\u304f\u306a\u3044\u3001\u30d7\u30c3\u30b7\u30e5\u53ef\u80fd\u306a\u30ea\u30bd\u30fc\u30b9\u3092\u7279\u5b9a\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u6a5f\u80fd\u306b\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HTTP\/2\u306e\u5b9f\u88c5\u306f\u3001\u4ee5\u4e0b\u3067\u8aac\u660e\u3059\u308bHTTP\/2\u306e\u305d\u306e\u4ed6\u306e\u5229\u70b9\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u6539\u5584\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u3053\u308c\u3089\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u3092\u3055\u307e\u3056\u307e\u306a\u30da\u30fc\u30b8\u3067\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u3092\u6700\u521d\u306b\u8981\u6c42\u3055\u308c\u305f\u60c5\u5831\u3068\u540c\u3058TCP\u63a5\u7d9a\u3067\u591a\u91cd\u5316\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30b5\u30fc\u30d0\u30fc\u306f\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306b\u512a\u5148\u9806\u4f4d\u3092\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001HTTP\/2\u3068HTTP1\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u7570\u306a\u308b\u91cd\u8981\u306a\u8981\u56e0\u3067\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306e\u6709\u52b9\u306a\u30ea\u30dd\u30b8\u30c8\u30ea\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u7279\u5b9a\u306e\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u3092\u62d2\u5426\u3059\u308b\u3053\u3068\u3082\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u3092\u5b8c\u5168\u306b\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u307e\u305f\u3001\u540c\u6642\u306b\u591a\u91cd\u5316\u3055\u308c\u308b\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u6570\u3092\u5236\u9650\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u540c\u69d8\u306e\u30d7\u30c3\u30b7\u30e5\u6a5f\u80fd\u306f\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u306a\u3069\u306e\u3042\u307e\u308a\u3088\u304f\u306a\u3044\u624b\u6cd5\u3067\u3059\u3067\u306b\u5b58\u5728\u3057\u307e\u3057\u305f\u304c\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u81ea\u4f53\u306e\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u6a5f\u80fd\u306e\u3088\u3046\u306b\u52b9\u679c\u7684\u3067\u306a\u3044\u6700\u9069\u5316\u306e\u5de5\u592b\u306b\u3088\u308b\u554f\u984c\u3092\u56de\u907f\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u30ec\u30d9\u30eb\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002<\/p>\n<p>HTTP\/2\u306f\u3001\u30d7\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u591a\u91cd\u5316\u3057\u3066\u512a\u5148\u9806\u4f4d\u3092\u4ed8\u3051\u3001\u4ed6\u306e\u8981\u6c42\u30fb\u5fdc\u7b54\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3067\u898b\u3089\u308c\u308b\u3088\u308a\u3082\u512a\u308c\u305f\u4f1d\u9001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u7d44\u307f\u8fbc\u307f\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3042\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30ea\u30bd\u30fc\u30b9\u3092\u30d7\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u3092\u4e8b\u524d\u306b\u627f\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 322px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-authorized.png\" alt=\"\u627f\u8a8d\u6e08\u307f\u306eHTTP\/2\" width=\"322\" height=\"142\"><figcaption class=\"wp-caption-text\">\u627f\u8a8d\u6e08\u307f\u306eHTTP\/2<\/figcaption><\/figure>\n\n<h3>\u30d0\u30a4\u30ca\u30ea\u30d7\u30ed\u30c8\u30b3\u30eb<\/h3>\n<p>HTTP\u306e\u6700\u65b0\u7248\u306f\u3001\u30c6\u30ad\u30b9\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb\u304b\u3089\u30d0\u30a4\u30ca\u30ea\u30d7\u30ed\u30c8\u30b3\u30eb\u3078\u306e\u5909\u63db\u306a\u3069\u306e\u6a5f\u80fd\u3084\u5c5e\u6027\u306e\u70b9\u3067\u5927\u5e45\u306b\u9032\u5316\u3057\u3066\u3044\u307e\u3059\u3002HTTP1.x\u306f\u3001\u30c6\u30ad\u30b9\u30c8\u30b3\u30de\u30f3\u30c9\u3092\u51e6\u7406\u3057\u3066\u8981\u6c42\u3068\u5fdc\u7b54\u306e\u30b5\u30a4\u30af\u30eb\u3092\u5b8c\u4e86\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002HTTP\/2\u306f\u3001\u30d0\u30a4\u30ca\u30ea\u30b3\u30de\u30f3\u30c9\uff081\u30680\uff09\u3092\u4f7f\u7528\u3057\u3066\u540c\u3058\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u3001\u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u306b\u3088\u308b\u554f\u984c\u306e\u6570\u3092\u6e1b\u3089\u3057\u3001\u30b3\u30de\u30f3\u30c9\u306b\u30c6\u30ad\u30b9\u30c8\u3068\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u7a7a\u9593\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u6df7\u5408\u306e\u30b3\u30de\u30f3\u30c9\u306e\u5b9f\u88c5\u3092\u5358\u7d14\u5316\u3057\u307e\u3059\u3002<\/p>\n<p>\u30c6\u30ad\u30b9\u30c8\u30b3\u30de\u30f3\u30c9\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001\u30d0\u30a4\u30ca\u30ea\u306e\u8aad\u307f\u53d6\u308a\u306b\u306f\u3088\u308a\u591a\u304f\u306e\u52b4\u529b\u304c\u5fc5\u8981\u3067\u3059\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3068\u3063\u3066\u306f\u30d0\u30a4\u30ca\u30ea\u3067\u5229\u7528\u53ef\u80fd\u306a\u30d5\u30ec\u30fc\u30e0\u3092\u751f\u6210\u3057\u3066\u89e3\u6790\u3059\u308b\u65b9\u304c\u7c21\u5358\u3067\u3059\u3002\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306f\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"width: 1489px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/binary-protocols-2.png\" alt=\"\u30d0\u30a4\u30ca\u30ea\u30d7\u30ed\u30c8\u30b3\u30eb\" width=\"1489\" height=\"292\"><figcaption class=\"wp-caption-text\">\u30d0\u30a4\u30ca\u30ea\u30d7\u30ed\u30c8\u30b3\u30eb<\/figcaption><\/figure>\n<p>HTTP\/2\u3092\u4f7f\u7528\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u30fc\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u9001\u4fe1\u3059\u308b\u524d\u306b\u3001\u540c\u3058\u30c6\u30ad\u30b9\u30c8\u30b3\u30de\u30f3\u30c9\u3092\u30d0\u30a4\u30ca\u30ea\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u30d0\u30a4\u30ca\u30ea\u30d5\u30ec\u30fc\u30df\u30f3\u30b0\u30ec\u30a4\u30e4\u30fc\u306f\u3001HTTP1.x\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304a\u3088\u3073\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u4e0b\u4f4d\u4e92\u63db\u6027\u304c\u306a\u304f\u3001SPDY\u304a\u3088\u3073HTTP1.x\u3088\u308a\u3082\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3059\u308b\u91cd\u8981\u306a\u7406\u7531\u306e\u4e00\u3064\u3067\u3059\u3002\u30d0\u30a4\u30ca\u30ea\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4f01\u696d\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u306e\u4e3b\u8981\u306a\u30d3\u30b8\u30cd\u30b9\u4e0a\u306e\u5229\u70b9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3067\u8aac\u660e\u3059\u308bHTTP\/2\u306e\u5229\u70b9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u30c7\u30fc\u30bf\u89e3\u6790\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5c11\u306a\u3044\u3067\u3059\u3002\u3053\u308c\u306fHTTP\/2\u3068HTTP1\u306e\u91cd\u8981\u306a\u4fa1\u5024\u547d\u984c\u3067\u3059\u3002<\/li>\n<li>\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u306b\u304f\u3044\u3067\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u4f7f\u7528\u306f\u52b9\u679c\u7684\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u3088\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u507d\u9020\u306a\u3069\u3001HTTP1.x\u306e\u30c6\u30ad\u30b9\u30c8\u306e\u6027\u8cea\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8ab2\u984c\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u5727\u7e2e\u3001\u591a\u91cd\u5316\u3001\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u3001\u30d5\u30ed\u30fc\u5236\u5fa1\u3001TLS\u306e\u52b9\u679c\u7684\u306a\u51e6\u7406\u306a\u3069\u3001HTTP\/2\u306e\u305d\u306e\u4ed6\u306e\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002<\/li>\n<li>\u51e6\u7406\u3068\u5b9f\u88c5\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306e\u30b3\u30de\u30f3\u30c9\u306e\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u8868\u73fe\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u306f\u52b9\u7387\u7684\u3067\u5805\u7262\u3067\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9045\u5ef6\u3092\u6e1b\u3089\u3057\u3001\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051<\/h3>\n<p>HTTP\/2\u3067\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u512a\u5148\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u6307\u793a\u306b\u5f93\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u5272\u308a\u5f53\u3066\u3092\u6700\u9069\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure style=\"width: 523px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-weight.png\" alt=\"HTTP\/2 \u306e\u91cd\u307f\u4ed8\u3051\" width=\"523\" height=\"238\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u306e\u91cd\u307f\u4ed8\u3051<\/figcaption><\/figure>\n<p>\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u306f\u3001\u5404\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u300c\u91cd\u307f\u4ed8\u3051\u300d\u3068\u300c\u4f9d\u5b58\u95a2\u4fc2\u300d\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u306f\u672c\u8cea\u7684\u306b\u4e92\u3044\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5404\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u30821\u301c256\u306e\u91cd\u307f\u4ed8\u3051\u3082\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u8a73\u7d30\u306f\u307e\u3060\u8b70\u8ad6\u4e2d\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u5b9f\u751f\u6d3b\u3067\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304cCPU\u3084\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306a\u3069\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u88c5\u81ea\u4f53\u304c\u8907\u96d1\u3067\u3042\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u8981\u6c42\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u5358\u4e00\u306eTCP\u63a5\u7d9a\u3067\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u51e6\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u3053\u306e\u5206\u91ce\u3067\u306e\u7814\u7a76\u958b\u767a\u306fHTTP\/2\u306e\u9577\u671f\u7684\u306a\u6210\u529f\u306b\u304a\u3044\u3066\u7279\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u89b3\u70b9\u304b\u3089\u898b\u308b\u3068\u3001\u512a\u5148\u5ea6\u306e\u70b9\u3067\u7570\u306a\u308b\u30b5\u30fc\u30d0\u30fc\u8981\u6c42\u304c\u540c\u6642\u306b\u5230\u7740\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u8981\u6c42\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u5ef6\u671f\u3059\u308b\u3068\u3001HTTP\/2\u304c\u7d04\u675f\u3057\u305f\u52b9\u7387\u3068\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u640d\u306a\u308f\u308c\u307e\u3059\u3002\u4e00\u65b9\u3001\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30c8\u3067\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u30b9\u30c8\u30ea\u30fc\u30e0\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u4f7f\u7528\u306f\u52b9\u679c\u7684\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u4e3b\u8981\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u8981\u6c42\u3092\u914d\u4fe1\u3059\u308b\u305f\u3081\u306e\u6642\u9593\u304c\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3068\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u30c7\u30fc\u30bf\u901a\u4fe1\u304c\u6700\u9069\u5316\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u9045\u5ef6\u306b\u3088\u308b\u60aa\u5f71\u97ff\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure style=\"width: 216px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-page-load.png\" alt=\"HTTP\/2 \u306e\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\" width=\"216\" height=\"235\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u306e\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f<\/figcaption><\/figure>\n<h3>\u30b9\u30c6\u30fc\u30c8\u30d5\u30eb\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e<\/h3>\n<p>\u30cf\u30a4\u30a8\u30f3\u30c9\u306e\u30a6\u30a7\u30d6\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u306b\u306f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u304c\u8c4a\u5bcc\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u5fc5\u8981\u3067\u3059\u3002HTTP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u5404\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8981\u6c42\u306b\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u8a72\u5f53\u306e\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3060\u3051\u306e\u60c5\u5831\u3092\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u81ea\u4f53\u304c\u4ee5\u524d\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8981\u6c42\u304b\u3089\u306e\u60c5\u5831\u3092\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3088\u3046\u306b\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u306b\u591a\u304f\u306e\u7121\u99c4\u306a\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30c7\u30a3\u30a2\u304c\u8c4a\u5bcc\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u63d0\u4f9b\u3059\u308b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u540c\u6642\u306b\u8907\u6570\u306e\u30d8\u30c3\u30c0\u30fc\u30d5\u30ec\u30fc\u30e0\u3092\u9001\u4fe1\u3057\u3001\u9045\u5ef6\u3068\u9650\u3089\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u306e\u4e0d\u5fc5\u8981\u306a\u6d88\u8cbb\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u512a\u5148\u9806\u4f4d\u304c\u4ed8\u3051\u3089\u308c\u305f\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u3001\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u6700\u9069\u5316\u3057\u306a\u3044\u3068\u3001\u4e26\u5217\u51e6\u7406\u306e\u671b\u307e\u3057\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u57fa\u6e96\u3092\u9054\u6210\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"width: 942px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-hpack-compression.png\" alt=\"HTTP\/2 HPACK \u5727\u7e2e\" width=\"942\" height=\"375\"><figcaption class=\"wp-caption-text\">HTTP\/2 HPACK \u5727\u7e2e<\/figcaption><\/figure>\n<p>HTTP\/2\u3067\u306f\u3001\u591a\u6570\u306e\u5197\u9577\u306a\u30d8\u30c3\u30c0\u30fc\u30d5\u30ec\u30fc\u30e0\u3092\u5727\u7e2e\u3059\u308b\u6a5f\u80fd\u3067\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u3078\u306e\u30b7\u30f3\u30d7\u30eb\u3067\u5b89\u5168\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3068\u3057\u3066HPACK\u4ed5\u69d8\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u4e21\u65b9\u304c\u3001\u4ee5\u524d\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u8981\u6c42\u3067\u4f7f\u7528\u3055\u308c\u305f\u30d8\u30c3\u30c0\u30fc\u306e\u30ea\u30b9\u30c8\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/p>\n<p>HPACK\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u8ee2\u9001\u3055\u308c\u308b\u524d\u306b\u5404\u30d8\u30c3\u30c0\u30fc\u306e\u500b\u3005\u306e\u5024\u3092\u5727\u7e2e\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u4ee5\u524d\u306b\u8ee2\u9001\u3055\u308c\u305f\u30d8\u30c3\u30c0\u30fc\u5024\u306e\u30ea\u30b9\u30c8\u304b\u3089\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u60c5\u5831\u3092\u691c\u7d22\u3057\u3066\u3001\u5b8c\u5168\u306a\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u518d\u69cb\u7bc9\u3057\u307e\u3059\u3002HTTP\/2\u7528\u306eHPACK\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u306f\u3001\u4ee5\u4e0b\u3067\u8aac\u660e\u3059\u308bHTTP\/2\u306e\u8907\u6570\u306e\u5229\u70b9\u3068\u3001\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4e0a\u306e\u5229\u70b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u304c\u52b9\u679c\u7684\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u591a\u91cd\u5316\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u52b9\u679c\u7684\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u524a\u6e1b\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306fHTTP\/2\u3068HTTP1\u304a\u3088\u3073HTTP\/2\u3068SPDY\u3092\u6bd4\u8f03\u3059\u308b\u8b70\u8ad6\u306e\u4e2d\u3067\u6700\u521d\u306b\u767a\u751f\u3057\u305f\u61f8\u5ff5\u306e\u4e00\u3064\u3067\u3059\u3002<\/li>\n<li>\u5927\u304d\u306a\u30d8\u30c3\u30c0\u30fc\u3068\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d8\u30c3\u30c0\u30fc\u3092\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u308b\u305f\u3081\u3001\u30d8\u30c3\u30c0\u30fc\u30d5\u30ec\u30fc\u30e0\u5168\u4f53\u3092\u9001\u4fe1\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u5404\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u500b\u3005\u306e\u8ee2\u9001\u30b5\u30a4\u30ba\u306f\u6025\u901f\u306b\u7e2e\u5c0f\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u5727\u7e2e\u3055\u308c\u305f\u30d8\u30c3\u30c0\u30fc\u3067\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u60aa\u7528\u3059\u308bCRIME\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u653b\u6483\u3092\u53d7\u3051\u3084\u3059\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h2><a id=\"feature_similarities_between_http1_spdy_http2\"><\/a>HTTP1.x\u304a\u3088\u3073SPDY\u3068\u306e\u985e\u4f3c\u70b9<\/h2>\n<p>HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3001URI\u3001\u65b9\u6cd5\u8ad6\u3001\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u3001HTTP\u306e\u57fa\u790e\u3068\u306a\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30bb\u30de\u30f3\u30c6\u30a3\u30af\u30b9\u306f\u3001HTTP\/2\u306e\u6700\u65b0\u7248\u3067\u3082\u540c\u3058\u307e\u307e\u3067\u3059\u3002HTTP\/2\u306f\u3001Google\u306eHTTP1.x\u306b\u4ee3\u308f\u308bSPDY\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u771f\u306e\u9055\u3044\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u8981\u6c42\u306e\u51e6\u7406\u306b\u4f7f\u7528\u3055\u308c\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u3042\u308a\u307e\u3059\u3002\u6b21\u306e\u8868\u306f\u3001HTTP1.x\u3001SPDY\u3001\u304a\u3088\u3073HTTP\/2\u306e\u985e\u4f3c\u70b9\u3068\u6539\u5584\u70b9\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"section5_table\">\n<div class=\"table-responsive\">\n<table class=\"table table-bordered\">\n<thead>\n<tr>\n<th class=\"section5_table_line_title\">HTTP1.x<\/th>\n<th class=\"section5_table_line_title\">SPDY<\/th>\n<th class=\"section5_table_line_title\">HTTP2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"section5_table_cell\">SSL\u306f\u5fc5\u9808\u3067\u306f\u306a\u3044\u304c\u63a8\u5968\u3055\u308c\u308b<\/td>\n<td class=\"section5_table_cell\">SSL\u304c\u5fc5\u9808<\/td>\n<td class=\"section5_table_cell\">SSL\u306f\u5fc5\u9808\u3067\u306f\u306a\u3044\u304c\u63a8\u5968\u3055\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td class=\"section5_table_cell\">\u6697\u53f7\u5316\u304c\u9045\u3044<\/td>\n<td class=\"section5_table_cell\">\u6697\u53f7\u5316\u304c\u9ad8\u901f<\/td>\n<td class=\"section5_table_cell\">\u6697\u53f7\u5316\u304c\u3055\u3089\u306b\u9ad8\u901f<\/td>\n<\/tr>\n<tr>\n<td class=\"section5_table_cell\">TCP\u63a5\u7d9a\u3054\u3068\u306b1\u3064\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u8981\u6c42<\/td>\n<td class=\"section5_table_cell\">TCP\u63a5\u7d9a\u3054\u3068\u306b\u8907\u6570\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u8981\u6c42\u3002\u4e00\u5ea6\u306b1\u3064\u306e\u30db\u30b9\u30c8\u3067\u767a\u751f\u3002<\/td>\n<td class=\"section5_table_cell\">\u30de\u30eb\u30c1\u30db\u30b9\u30c8\u591a\u91cd\u5316\u3002\u8907\u6570\u306e\u30db\u30b9\u30c8\u3067\u540c\u6642\u306b\u767a\u751f\u3002<\/td>\n<\/tr>\n<tr>\n<td class=\"section5_table_cell\">\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u306a\u3057<\/td>\n<td class=\"section5_table_cell\">\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u304c\u5c0e\u5165\u3055\u308c\u308b<\/td>\n<td class=\"section5_table_cell\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u6539\u826f\u3055\u308c\u305f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u305f\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e<\/td>\n<\/tr>\n<tr>\n<td class=\"section5_table_cell\">\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u306a\u3057<\/td>\n<td class=\"section5_table_cell\">\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u304c\u5c0e\u5165\u3055\u308c\u308b<\/td>\n<td class=\"section5_table_cell\">\u6539\u5584\u3055\u308c\u305f\u30b9\u30c8\u30ea\u30fc\u30e0\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u4f7f\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<section id=\"feature_similarities_between_http1_spdy_http2\">\n<h2><a id=\"how_does_http2_work_with_https\"><\/a>HTTP\/2\u3068HTTPS\u306e\u9023\u643a<\/h2>\n<p>HTTPS\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u3001\u30de\u30b7\u30f3\u3001\u30b5\u30fc\u30d0\u30fc\u306a\u3069\u3092\u63a5\u7d9a\u3059\u308b\u8d85\u5b89\u5168\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u78ba\u7acb\u3057\u3066\u3001\u30d3\u30b8\u30cd\u30b9\u3084\u6d88\u8cbb\u8005\u306e\u6a5f\u5bc6\u60c5\u5831\u3092\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u91d1\u878d\u53d6\u5f15\u3092\u51e6\u7406\u3059\u308b\u9280\u884c\u3068\u60a3\u8005\u306e\u8a18\u9332\u3092\u7ba1\u7406\u3059\u308b\u533b\u7642\u6a5f\u95a2\u306f\u3001\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u306e\u4e3b\u306a\u6a19\u7684\u3067\u3059\u3002HTTPS\u306f\u3001\u6301\u7d9a\u7684\u306a\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u306e\u8105\u5a01\u306b\u5bfe\u3059\u308b\u52b9\u679c\u7684\u306a\u30ec\u30a4\u30e4\u30fc\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u9ad8\u4fa1\u5024\u306e\u4f01\u696d\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u6a19\u7684\u306b\u3057\u305f\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u3092\u963b\u6b62\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u552f\u4e00\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"width: 382px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-https.png\" alt=\"HTTP\/2 HTTPS\" width=\"382\" height=\"183\"><figcaption class=\"wp-caption-text\">HTTP\/2 HTTPS<\/figcaption><\/figure>\n<p>HTTP\/2\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\u306b\u306fHTTPS\u6697\u53f7\u5316\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001HTTPS\u306e\u5168\u4f53\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u88dc\u5b8c\u3057\u307e\u3059\u3002TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u6e1b\u5c11\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3068\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u4e21\u65b9\u3067\u306e\u30ea\u30bd\u30fc\u30b9\u6d88\u8cbb\u306e\u6e1b\u5c11\u3001HTTP1.x\u306b\u95a2\u9023\u3059\u308b\u8106\u5f31\u6027\u3092\u6392\u9664\u3057\u306a\u304c\u3089\u3001\u65e2\u5b58\u306e\u30a6\u30a7\u30d6\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u518d\u5229\u7528\u3059\u308b\u6a5f\u80fd\u306e\u5411\u4e0a\u306a\u3069\u306e\u6a5f\u80fd\u306e\u304a\u304b\u3052\u3067\u3001HTTP\/2\u306f\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u3067\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u8981\u7d20\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 688px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-encryption.png\" alt=\"HTTP\/2 \u6697\u53f7\u5316\" width=\"688\" height=\"142\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u6697\u53f7\u5316<\/figcaption><\/figure>\n<p>HTTPS\u306f\u6709\u540d\u4f01\u696d\u306b\u9650\u5b9a\u3055\u308c\u305a\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u306e\u6240\u6709\u8005\u3001\u8da3\u5473\u3067\u30d6\u30ed\u30ac\u30fc\u3092\u3057\u3066\u3044\u308b\u4eba\u3001e\u30b3\u30de\u30fc\u30b9\u306e\u904b\u55b6\u8005\u3001\u3055\u3089\u306b\u306f\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u3082\u540c\u69d8\u306b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002HTTP\/2\u306f\u672c\u8cea\u7684\u306b\u6700\u65b0\u306e\u6700\u3082\u5b89\u5168\u306aTLS\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5fc5\u8981\u3068\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u3059\u3079\u3066\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3001\u30d3\u30b8\u30cd\u30b9\u30aa\u30fc\u30ca\u30fc\u3001\u304a\u3088\u3073\u30a6\u30a7\u30d6\u30de\u30b9\u30bf\u30fc\u306f\u3001\u81ea\u5206\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u3067HTTPS\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>HTTPS\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u3001\u30a6\u30a7\u30d6<a href=\"https:\/\/kinsta.com\/jp\/\">\u30db\u30b9\u30c6\u30a3\u30f3\u30b0<\/a>\u30d7\u30e9\u30f3\u3092\u4f7f\u7528\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a3c\u660e\u66f8\u3092\u8cfc\u5165\u3057\u3066\u30a2\u30af\u30c6\u30a3\u30d6\u5316\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u4e0a\u3067\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092HTTPS\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u66f4\u65b0\u3057\u307e\u3059\u3002<\/p>\n\n<\/section>\n<h2><a id=\"main_benefits_of_http2\"><\/a>HTTP\/2\u306e\u4e3b\u306a\u5229\u70b9<\/h2>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u696d\u754c\u306f\u3001\u6642\u4ee3\u9045\u308c\u306eHTTP1.x\u3092\u4e00\u822c\u30e6\u30fc\u30b6\u30fc\u304c\u4f53\u9a13\u3067\u304d\u308b\u6709\u671b\u306a\u5229\u70b9\u3092\u6301\u3064\u4ee3\u66ff\u54c1\u3068\u7f6e\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\nHTTP1.x\u304b\u3089HTTP\/2\u3078\u306e\u79fb\u884c\u306e\u307b\u3068\u3093\u3069\u5168\u3066\u304c\u3001\u4e0a\u8a18\u306e\u671f\u5f85\u306b\u5fdc\u3048\u308b\u305f\u3081\u306e\u6280\u8853\u9032\u6b69\u306e\u6f5c\u5728\u80fd\u529b\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u3053\u3068\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u306e\u89b3\u70b9\u304b\u3089\u898b\u308b\u3068\u3001\u7121\u99c4\u306a\u30e1\u30c7\u30a3\u30a2\u3067\u3044\u3063\u3071\u3044\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u91cf\u304c\u5897\u52a0\u3057\u3066\u3044\u308b\u305f\u3081\u3001Web\u306e\u901f\u5ea6\u306f\u4f4e\u4e0b\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u304c\u52b9\u679c\u7684\u306b\u30bf\u30fc\u30b2\u30c3\u30c8\u5e02\u5834\u306b\u53c2\u5165\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u304c\u3088\u308a\u512a\u308c\u305f\u30a6\u30a7\u30d6\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u3059\u3070\u3084\u304f\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3001HTTP\/2\u306e\u5909\u66f4\u70b9\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u30c7\u30fc\u30bf\u901a\u4fe1\u306e\u52b9\u7387\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u958b\u767a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4e0a\u3001\u30a6\u30a7\u30d6\u306f\u3053\u308c\u307e\u3067\u4ee5\u4e0a\u306b\u72b6\u6cc1\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 764px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/internet-speed.jpg\" alt=\"\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901f\u5ea6\" width=\"764\" height=\"452\"><figcaption class=\"wp-caption-text\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901f\u5ea6<\/figcaption><\/figure>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u901f\u5ea6\u306f\u3001\u3059\u3079\u3066\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u5730\u7406\u7684\u306a\u5834\u6240\u3067\u540c\u3058\u3067\u3042\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u3059\u307e\u3059\u5897\u52a0\u3059\u308b\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b6\u30fc\u30d9\u30fc\u30b9\u306f\u3001\u6df7\u96d1\u3057\u305f\u30bb\u30eb\u30e9\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u9ad8\u901f\u30d6\u30ed\u30fc\u30c9\u30d0\u30f3\u30c9\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3068\u7af6\u5408\u3067\u304d\u306a\u304f\u3066\u3082\u3001\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u30b9\u30e0\u30fc\u30ba\u3067\u9ad8\u6027\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u8981\u6c42\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001\u6b21\u306e\u91cd\u8981\u306a\u5229\u70b9\u3092\u6301\u3064\u5b9f\u884c\u53ef\u80fd\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u3001\u5b8c\u5168\u306b\u6539\u5b9a\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u304a\u3088\u3073\u30c7\u30fc\u30bf\u901a\u4fe1\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3042\u308bHTTP\/2\u304c\u767b\u5834\u3057\u307e\u3057\u305f\u3002<\/p>\n\n<h3>\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/h3>\n<p>\u3053\u306e\u7528\u8a9e\u306f\u3001HTTP\/2\u306e\u5909\u66f4\u306b\u3088\u308b\u3059\u3079\u3066\u306e\u5229\u70b9\u3092\u307e\u3068\u3081\u305f\u3082\u306e\u3067\u3059\u3002 HTTP\/2\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u7d50\u679c\uff08\u300cHTTPS\u3001SPDY\u3001\u305d\u3057\u3066HTTP\/2\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u300d\u3092\u53c2\u7167\uff09\u306f\u3001HTTP\/2\u306f\u3001\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3084\u305d\u306e\u4ed6\u306e\u4ee3\u66ff\u54c1\u3088\u308a\u3082\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u512a\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-performance-improvements.jpg\" alt=\"HTTP\/2 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584\" width=\"800\" height=\"420\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584<\/figcaption><\/figure>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u306e\u901a\u4fe1\u30b5\u30a4\u30af\u30eb\u3054\u3068\u306b\u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u9001\u53d7\u4fe1\u3059\u308b\u6a5f\u80fd\u306f\u3001\u6700\u9069\u5316\u306e\u5de5\u592b\u3067\u306f\u306a\u304f\u3001HTTP\/2\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u70b9\u3067\u306e\u73fe\u5b9f\u7684\u3067\u5b9f\u73fe\u53ef\u80fd\u3067\u5b9f\u7528\u7684\u306a\u5229\u70b9\u3067\u3059\u3002\u4f8b\u3048\u3066\u307f\u308b\u3068\u3001\u6a19\u6e96\u306e\u9244\u9053\u3068\u771f\u7a7a\u30c1\u30e5\u30fc\u30d6\u5217\u8eca\u306e\u3088\u3046\u306a\u9055\u3044\u3067\u3059\u3002\u771f\u7a7a\u30c1\u30e5\u30fc\u30d6\u5217\u8eca\u306e\u30c8\u30f3\u30cd\u30eb\u304b\u3089\u306e\u7a7a\u6c17\u62b5\u6297\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u3088\u308a\u5927\u304d\u306a\u30a8\u30f3\u30b8\u30f3\u306e\u53d6\u308a\u4ed8\u3051\u3001\u91cd\u91cf\u306e\u524a\u6e1b\u3001\u8eca\u4e21\u306e\u7a7a\u529b\u6027\u80fd\u306e\u5411\u4e0a\u306b\u96c6\u4e2d\u3059\u308b\u5fc5\u8981\u306a\u304f\u3001\u5229\u7528\u53ef\u80fd\u306a\u30c1\u30e3\u30cd\u30eb\u306e\u5229\u7528\u3092\u6539\u5584\u3057\u3066\u3001\u8eca\u4e21\u306f\u3088\u308a\u901f\u304f\u79fb\u52d5\u3057\u3001\u3088\u308a\u591a\u304f\u306e\u4e57\u5ba2\u3092\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u591a\u91cd\u5316\u306a\u3069\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3067\u306f\u3001\u30a8\u30a2\u30d0\u30b9\u98db\u884c\u6a5f\u306e2\u968e\u306b\u3042\u308b\u5ea7\u5e2d\u306e\u3088\u3046\u306b\u3001\u3088\u308a\u591a\u304f\u306e\u30c7\u30fc\u30bf\u3092\u540c\u6642\u306b\u4f1d\u9001\u304a\u3088\u3073\u9001\u4fe1\u3059\u308b\u305f\u3081\u306e\u8ffd\u52a0\u306e\u30b9\u30da\u30fc\u30b9\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305d\u3057\u3066\u3001\u30c7\u30fc\u30bf\u901a\u4fe1\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6539\u5584\u3059\u308b\u305f\u3081\u306b\u3059\u3079\u3066\u306e\u30cf\u30fc\u30c9\u30eb\u3092\u6392\u9664\u3059\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f \u512a\u308c\u305f\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u526f\u7523\u7269\u306b\u306f\u3001\u9867\u5ba2\u6e80\u8db3\u5ea6\u306e\u5411\u4e0a\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306e\u6700\u9069\u5316\u306e\u5411\u4e0a\u3001\u751f\u7523\u6027\u3068\u30ea\u30bd\u30fc\u30b9\u306e\u5229\u7528\u7387\u306e\u5411\u4e0a\u3001\u30e6\u30fc\u30b6\u30fc\u30d9\u30fc\u30b9\u306e\u62e1\u5927\u3001<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/#section2\" target=\"_blank\" rel=\"noopener noreferrer\">\u58f2\u4e0a\u9ad8\u306e\u5411\u4e0a<\/a>\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5e78\u3044\u306a\u3053\u3068\u306b\u3001HTTP\/2\u306e\u63a1\u7528\u306f\u3001\u5927\u578b\u306e2\u968e\u5efa\u8eca\u4e21\u306e\u771f\u7a7a\u30c1\u30e3\u30f3\u30d0\u30fc\u3092\u4f5c\u6210\u3059\u308b\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u5b9f\u7528\u7684\u3067\u3059\u3002<\/p>\n<h3>\u30e2\u30d0\u30a4\u30eb\u306e\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/h3>\n<p>\u4f55\u767e\u4e07\u4eba\u3082\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u304c\u3001\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u3078\u306e\u4e3b\u8981\u306a\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3068\u3057\u3066\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u304b\u3089Web\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30bd\u30b3\u30f3\u5f8c\u306e\u6642\u4ee3\u306f\u3001\u3001\u624b\u306e\u3072\u3089\u304b\u3089Web\u30d9\u30fc\u30b9\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306e\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u63a1\u7528\u3068<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/#section3\" target=\"_blank\" rel=\"noopener noreferrer\">\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u524d\u306b\u9577\u6642\u9593\u5ea7\u3063\u3066\u3044\u308b\u4ee3\u308f\u308a\u306b\u3001\u5916\u51fa\u5148\u3067\u65e5\u5e38\u7684\u306a\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u4f5c\u696d\u306e\u5927\u534a\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068<\/a>\u3092\u63a8\u9032\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>HTTP\/2\u306f\u3001\u73fe\u5728\u306eWeb\u4f7f\u7528\u306e\u50be\u5411\u3092\u8003\u616e\u3057\u3066\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u591a\u91cd\u5316\u3084\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u306a\u3069\u306e\u6a5f\u80fd\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u3054\u3068\u306b\u9650\u3089\u308c\u305f\u5e2f\u57df\u5e45\u3092\u63d0\u4f9b\u3059\u308b\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4ecb\u3057\u3066\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306e\u9045\u5ef6\u3092\u6e1b\u3089\u3059\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002HTTP\/2\u306f\u3001\u4ee5\u524d\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u304b\u3089\u306e\u4f7f\u7528\u306e\u969b\u306b\u306e\u307f\u63d0\u4f9b\u3055\u308c\u305f\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3067\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b6\u30fc\u306eWeb\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u6700\u9069\u5316\u3057\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u306eHTTP\/2\u306e\u5229\u70b9\u306b\u306f\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u304c\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u306e\u9867\u5ba2\u3092\u30bf\u30fc\u30b2\u30c3\u30c8\u3059\u308b\u70b9\u3067\u3059\u3050\u306b\u30d7\u30e9\u30b9\u306e\u5f71\u97ff\u3092\u3082\u305f\u3089\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 335px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\" \" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2_mobile.png\" alt=\"HTTP\/2 \u30e2\u30d0\u30a4\u30eb\" width=\"335\" height=\"335\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u30e2\u30d0\u30a4\u30eb<\/figcaption><\/figure>\n\n<h3>\u3088\u308a\u5b89\u4fa1\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8<\/h3>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u5229\u7528\u6599\u91d1\u306f\u3001World Wide Web\u306e\u9ece\u660e\u671f\u304b\u3089\u5927\u5e45\u306b\u6025\u843d\u3057\u3066\u3044\u307e\u3059\u3002Web\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306e\u62e1\u5927\u3068\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u901f\u5ea6\u306e\u5411\u4e0a\u306f\u3001\u5e38\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u306e\u958b\u767a\u306e\u4e3b\u306a\u76ee\u6a19\u3067\u3057\u305f\u3002\u4e00\u65b9\u3001\u7279\u306b\u96fb\u6c17\u901a\u4fe1\u4e8b\u696d\u8005\u306e\u72ec\u5360\u72b6\u614b\u3092\u53d6\u308a\u5dfb\u304f\u8ab2\u984c\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u5229\u7528\u6599\u91d1\u306e\u6539\u5584\u304c\u6b62\u307e\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<figure style=\"width: 663px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/internet-price-drop.png\" alt=\"\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u6599\u91d1\u306e\u6025\u843d\" width=\"663\" height=\"182\"><figcaption class=\"wp-caption-text\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u6599\u91d1\u306e\u6025\u843d<\/figcaption><\/figure>\n<p>\u30b9\u30eb\u30fc\u30d7\u30c3\u30c8\u306e\u5411\u4e0a\u3068\u30c7\u30fc\u30bf\u901a\u4fe1\u52b9\u7387\u306e\u5411\u4e0a\u3092\u7d04\u675f\u3059\u308bHTTP\/2\u306b\u3088\u308a\u3001\u96fb\u6c17\u901a\u4fe1\u4e8b\u696d\u8005\u306f\u9ad8\u901f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u6a19\u6e96\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u904b\u7528\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002OpEx\u306e\u524a\u6e1b\u306b\u3088\u308a\u3001\u96fb\u6c17\u901a\u4fe1\u4e8b\u696d\u8005\u306f\u4f4e\u4fa1\u683c\u5e02\u5834\u306e\u4fa1\u683c\u3092\u5927\u5e45\u306b\u5f15\u304d\u4e0b\u3052\u3001\u65e2\u5b58\u306e\u4fa1\u683c\u30e2\u30c7\u30eb\u306b\u9ad8\u901f\u30b5\u30fc\u30d3\u30b9\u968e\u5c64\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u5e83\u7bc4\u306a\u30ea\u30fc\u30c1<\/h3>\n<p>\u4eba\u53e3\u5bc6\u5ea6\u306e\u9ad8\u3044\u30a2\u30b8\u30a2\u3068\u30a2\u30d5\u30ea\u30ab\u306e\u5e02\u5834\u306f\u3001\u624b\u9803\u306a\u4fa1\u683c\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u9650\u3089\u308c\u3066\u304a\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u884c\u304d\u5c4a\u3044\u3066\u3044\u306a\u3044\u307e\u307e\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u696d\u8005\u306f\u3001\u6700\u9ad8\u306e\u5229\u76ca\u3092\u751f\u307f\u51fa\u3059\u90fd\u5e02\u90e8\u3084\u5148\u9032\u56fd\u306b\u306e\u307f\u6295\u8cc7\u3092\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002\u9ad8\u5ea6\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5927\u898f\u6a21\u306a\u63a1\u7528\u306b\u3064\u306a\u304c\u308bHTTP\/2\u306e\u5229\u70b9\u306b\u3088\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6df7\u96d1\u304c\u81ea\u7136\u306b\u8efd\u6e1b\u3055\u308c\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u306a\u3044\u9060\u304f\u96e2\u308c\u305f\u5730\u7406\u7684\u5834\u6240\u306e\u305f\u3081\u306b\u30ea\u30bd\u30fc\u30b9\u3068\u5e2f\u57df\u5e45\u304c\u7bc0\u7d04\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure style=\"width: 801px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/bandwidth-map.png\" alt=\"\u5e2f\u57df\u5e45\u306e\u5730\u56f3\" width=\"801\" height=\"357\"><figcaption class=\"wp-caption-text\">\u5e2f\u57df\u5e45\u306e\u5730\u56f3<\/figcaption><\/figure>\n<h3>\u30e1\u30c7\u30a3\u30a2\u8c4a\u304b\u306a\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9<\/h3>\n<p>\u6700\u65b0\u306eWeb\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3068\u306f\u3001\u30e1\u30c7\u30a3\u30a2 \u30ea\u30c3\u30c1\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8d85\u9ad8\u901f\u306e\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3067\u914d\u4fe1\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u660e\u3089\u304b\u306b\u5b9a\u671f\u7684\u306b\u66f4\u65b0\u3055\u308c\u308b\u30e1\u30c7\u30a3\u30a2 \u30ea\u30c3\u30c1\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u30b5\u30fc\u30d3\u30b9\u3092\u8981\u6c42\u3057\u307e\u3059\u3002\u305d\u306e\u57fa\u76e4\u3068\u306a\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u30b3\u30b9\u30c8\u306e\u4f59\u88d5\u304c\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u30d9\u30fc\u30b9\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u30af\u30e9\u30a6\u30c9\u3092\u4f7f\u7528\u3057\u3066\u63d0\u4f9b\u3055\u308c\u308b\u5834\u5408\u3067\u3082\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d9\u30f3\u30c1\u30e3\u30fc\u4f01\u696d\u306f\u5fc5\u305a\u3057\u3082\u3042\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002HTTP\/2\u306e\u5229\u70b9\u3068\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u306a\u3069\u306e\u6a5f\u80fd\u306f\u5b9f\u969b\u306e\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u7e2e\u5c0f\u3057\u307e\u305b\u3093\u304c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u30ea\u30bd\u30fc\u30b9\u3092\u6d88\u8cbb\u3059\u308b\u30e1\u30c7\u30a3\u30a2\u30ea\u30c3\u30c1\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u6570\u30d0\u30a4\u30c8\u306e\u30b5\u30a4\u30ba\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u53d6\u308a\u6d88\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30e2\u30d0\u30a4\u30eb\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u5411\u4e0a<\/h3>\n<p>\u5148\u9032\u7684\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u30d5\u30a1\u30fc\u30b9\u30c8\u6226\u7565\u306b\u5f93\u3063\u3066\u3001\u7206\u767a\u7684\u306b\u5897\u52a0\u3059\u308b\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b6\u30fc\u30d9\u30fc\u30b9\u3092\u52b9\u679c\u7684\u306b\u30bf\u30fc\u30b2\u30c3\u30c8\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u30fc\u8981\u6c42\u306e\u51e6\u7406\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u9577\u304f\u306a\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30e2\u30d0\u30a4\u30eb\u88c5\u7f6e\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u3088\u308b\u5236\u9650\u306f\u3001\u304a\u305d\u3089\u304f\u30e2\u30d0\u30a4\u30ebWeb\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306b\u3068\u3063\u3066\u6700\u5927\u306e\u5236\u7d04\u3067\u3057\u3087\u3046\u3002HTTP\/2\u306f\u3001\u8aad\u307f\u8fbc\u307f\u6642\u9593\u3068\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5f85\u3061\u6642\u9593\u3092\u6211\u6162\u3067\u304d\u308b\u30ec\u30d9\u30eb\u306b\u6291\u3048\u307e\u3059\u3002<\/p>\n<figure style=\"width: 798px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/mobile-first.png\" alt=\"\u30e2\u30d0\u30a4\u30eb\u30d5\u30a1\u30fc\u30b9\u30c8\" width=\"798\" height=\"382\"><figcaption class=\"wp-caption-text\">\u30e2\u30d0\u30a4\u30eb\u30d5\u30a1\u30fc\u30b9\u30c8<\/figcaption><\/figure>\n<h3>\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u5229\u7528\u306e\u6539\u5584<\/h3>\n<p>\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u306e\u30e1\u30c7\u30a3\u30a2 \u30ea\u30c3\u30c1\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u8907\u96d1\u306a\u30a6\u30a7\u30d6\u30c7\u30b6\u30a4\u30f3\u3092\u914d\u4fe1\u3059\u308b\u305f\u3081\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u8981\u6c42\u3092\u51e6\u7406\u3059\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304a\u3088\u3073\u30b5\u30fc\u30d0\u30fc\u306e\u30ea\u30bd\u30fc\u30b9\u6d88\u8cbb\u306f\u5927\u5e45\u306b\u5897\u52a0\u3057\u3066\u3044\u307e\u3059\u3002\u30a6\u30a7\u30d6\u958b\u767a\u8005\u306f\u9069\u5207\u306a\u6700\u9069\u5316\u306e\u5de5\u592b\u3092\u4f5c\u6210\u3057\u3066\u3066\u304d\u307e\u3057\u305f\u304c\u3001HTTP\/2\u306e\u3088\u3046\u306a\u5805\u7262\u3067\u4fe1\u983c\u3067\u304d\u308b\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u907f\u3051\u3089\u308c\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u4f9d\u5b58\u95a2\u4fc2\u3001\u591a\u91cd\u5316\u306a\u3069\u306e\u6a5f\u80fd\u306f\u3059\u3079\u3066\u3001HTTP\/2\u306e\u4e3b\u8981\u306a\u5229\u70b9\u3068\u3057\u3066\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5229\u7528\u7387\u306e\u5411\u4e0a\u306b\u8ca2\u732e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/h3>\n<p>HTTP\/2\u306f\u3001HPACK\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u308a\u3001\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ec\u30a4\u30e4\u30fc\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u6a19\u7684\u3068\u3059\u308b\u4e00\u822c\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8105\u5a01\u3092\u56de\u907f\u3067\u304d\u308b\u305f\u3081\u3001HTTP\/2\u306e\u5229\u70b9\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5206\u91ce\u3092\u8d85\u3048\u3066\u3044\u307e\u3059\u3002HTTP\/2\u306f\u30d0\u30a4\u30ca\u30ea\u306e\u30b3\u30de\u30f3\u30c9\u3092\u542b\u307f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u9001\u4fe1\u3055\u308c\u308b\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u300c\u96a0\u853d\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u300d\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u5f93\u3046\u3053\u3068\u3067HTTP\u30d8\u30c3\u30c0\u30fc\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u5727\u7e2e\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u6697\u53f7\u5316\u3092\u5b8c\u5168\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u4fdd\u8b77\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff08TLS1.2\uff09\u306e\u6539\u826f\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u5fc5\u8981\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 321px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-security.png\" alt=\"HTTP\/2 \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\" width=\"321\" height=\"321\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/figcaption><\/figure>\n<h3>\u9769\u65b0<\/h3>\n<p>HTTP\/ \u306f\u3001\u9769\u65b0\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u9ad8\u3044Web\u306e\u6982\u5ff5\u3092\u5177\u4f53\u5316\u3057\u3066\u3044\u307e\u3059\u3002HTTP\/2\u306f\u4eca\u65e5\u306e\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u3092\u652f\u3048\u3066\u3044\u307e\u3059\u3002HTTP\/2\u306e\u5909\u66f4\u70b9\u306f\u4e3b\u306bGoogle\u306eSPDY\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u57fa\u3065\u3044\u3066\u304a\u308a\u3001\u53e4\u304f\u306a\u3063\u305fHTTP1.x\u304b\u3089\u6b21\u306a\u308b\u98db\u8e8d\u3092\u3057\u3066\u3001\u4eca\u5f8c\u306fSPDY\u3068\u4ee5\u524d\u306e\u3059\u3079\u3066\u306eHTTP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u307b\u307c\u5b8c\u5168\u306b\u7f6e\u304d\u63db\u3048\u308b\u3067\u3057\u3087\u3046\u3002\u8907\u96d1\u306a\u30a6\u30a7\u30d6\u6700\u9069\u5316\u306e\u5de5\u592b\u306e\u9664\u53bb\u306b\u3088\u308a\u3001HTTP\/2\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\u306f\u3001\u30a6\u30a7\u30d6\u958b\u767a\u8005\u304c\u9ad8\u6027\u80fd\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3068\u30aa\u30f3\u30e9\u30a4\u30f3\u30b5\u30fc\u30d3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u5b9f\u884c\u53ef\u80fd\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>HTTP\/2\u306eSEO\u306e\u89b3\u70b9\u3067\u306e\u5229\u70b9<\/h3>\n<p>SEO\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u306e\u5206\u91ce\u306f\u3001\u82b8\u8853\u3068\u79d1\u5b66\u3068\u306e\u878d\u5408\u3067\u3059\u3002\u5f93\u6765\u306e\u30d6\u30e9\u30c3\u30af\u30cf\u30c3\u30c8SEO\u306e\u624b\u6cd5\u3067\u306f\u3001\u4eba\u6c17\u306e\u3042\u308b\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u3067\u4f7f\u7528\u3055\u308c\u308b\u307e\u3059\u307e\u3059\u8907\u96d1\u5316\u3059\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u308b\u63b2\u8f09\u9806\u4f4d\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u306f\u3001\u3053\u306e\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u6226\u7565\u3092\u9032\u5316\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30b9\u30d4\u30fc\u30c9\u306e\u89b3\u70b9\u3067\u6700\u9069\u5316\u3057\u305f\u3060\u3051\u3067\u306a\u304f\u3001\u512a\u308c\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/a>\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u8003\u616e\u3057\u3066\u8a2d\u8a08\u3055\u308c\u305f\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3078\u306e\u30b9\u30de\u30fc\u30c8\u306a\u6295\u8cc7\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u7279\u5fb4\u306f\u3001\u4e16\u754c\u4e2d\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u30aa\u30fc\u30c7\u30a3\u30a8\u30f3\u30b9\u304c\u7c21\u5358\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3001\u6700\u3082\u6b63\u78ba\u306a\u60c5\u5831\u3068\u30b5\u30fc\u30d3\u30b9\u3092\u5099\u3048\u305f\u691c\u7d22\u30af\u30a8\u30ea\u3092\u8fd4\u3059\u624b\u6bb5\u3068\u3057\u3066\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u6700\u9069\u5316\u306e\u6a19\u6e96\u5316\u3055\u308c\u305f\u696d\u754c\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u6226\u7565\u3092\u8d85\u3048\u3066\u304a\u308a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\/\u30b5\u30fc\u30d0\u30fc\u901a\u4fe1\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3059\u3002\u304b\u3064\u3066\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5e02\u5834\u306e\u5b9a\u756a\u3067\u3042\u3063\u305fSEO\u5bfe\u7b56\u306e\u4e00\u90e8\u306f\u3001<br \/>\n\u6700\u65b0\u306e\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u6280\u8853\u306e\u51fa\u73fe\u4ee5\u6765\u3001\u5730\u4f4d\u3092\u5931\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u4e2d\u3067\u3001HTTP\/2\u306e\u666e\u53ca\u306f\u3001\u30a6\u30a7\u30d6\u958b\u767a\u8005\u3084\u30de\u30fc\u30b1\u30bf\u30fc\u3092\u767d\u7d19\u306b\u623b\u3057\u3066\u3084\u308a\u76f4\u3055\u305b\u308b\u4e3b\u8981\u306a\u69cb\u9020\u5909\u5316\u3067\u3059\u3002<\/p>\n<figure style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-seo-advantages.png\" alt=\"HTTP\/2 SEO\u306e\u89b3\u70b9\u3067\u306e\u5229\u70b9\" width=\"800\" height=\"455\"><figcaption class=\"wp-caption-text\">HTTP\/2 SEO\u306e\u89b3\u70b9\u3067\u306e\u5229\u70b9s<\/figcaption><\/figure>\n<p>HTTP\/2\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u5b9f\u88c5\u3068\u6700\u9069\u5316\u3001\u304a\u3088\u3073\u305d\u306e\u6709\u671b\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5229\u70b9\u306f\u3001\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306e\u6700\u9069\u5316\u306e\u91cd\u8981\u306a\u8981\u7d20\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u5341\u5206\u306a\u30aa\u30fc\u30ac\u30cb\u30c3\u30af\u306a\u30e6\u30fc\u30b6\u30fc\u30d9\u30fc\u30b9\u306e\u306a\u3044\u30aa\u30f3\u30e9\u30a4\u30f3\u30d3\u30b8\u30cd\u30b9\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u306eHTTP\/2\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3055\u3089\u306b\u6539\u5584\u3055\u308c\u308b\u63b2\u8f09\u9806\u4f4d\u306e\u9769\u65b0\u6027\u3068\u9ad8\u4fa1\u5024\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30b5\u30fc\u30d3\u30b9\u306e\u89b3\u70b9\u3067\u6210\u9577\u3057\u3064\u3064\u3042\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u4f01\u696d\u5e1d\u56fd\u3068\u7af6\u4e89\u3057\u3066\u3044\u308b\u969b\u306b\u3001HTTP\/2\u3068\u305d\u306eSEO\u3078\u306e\u5f71\u97ff\u3092\u7121\u8996\u3059\u308b\u308f\u3051\u306b\u306f\u3044\u304d\u307e\u305b\u3093\u3002<\/p>\n\n<section id=\"performance_benchmark_comparison_http1_spdy_http2\">\n<h2><a id=\"performance_benchmark_comparison_http1_spdy_http2\"><\/a>HTTPS\u3001SPDY\u3001\u305d\u3057\u3066HTTP\/2\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30d9\u30f3\u30c1\u30de\u30fc\u30af<\/h2>\n<p>\u4ee5\u4e0b\u306eHTTPS\u3001SPDY\u3001\u305d\u3057\u3066HTTP\/2\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306f\u3001\u6700\u65b0\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u308b\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u3092\u660e\u78ba\u306b\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 785px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-comparison.png\" alt=\"HTTP\/2 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e3\u30fc\u30c8\u306e\u6bd4\u8f03\" width=\"785\" height=\"391\"><figcaption class=\"wp-caption-text\">HTTP\/2 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e3\u30fc\u30c8\u306e\u6bd4\u8f03<\/figcaption><\/figure>\n<p>HTTP\/2\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306e\u7d50\u679c\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u3001\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u306a\u3069\u306e\u30da\u30fc\u30b8\u901f\u5ea6\u3068\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u771f\u306e\u5b9f\u884c\u529b\u304c\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30c6\u30b9\u30c8\u306e\u8a73\u7d30\uff1aHTTPS\u3001SPDY3.1\u3001\u304a\u3088\u3073HTTP\/2\u3092\u6bd4\u8f03\u3059\u308b<a href=\"https:\/\/blog.httpwatch.com\/2015\/01\/16\/a-simple-performance-comparison-of-https-spdy-and-HTTP\/2\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u3061\u3089\u306e\u30c6\u30b9\u30c8<\/a>\u306f\u3001\u6b21\u306e\u7d50\u679c\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<ul class=\"section8_list\">\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d8\u30c3\u30c0\u30fc\u3068\u30b5\u30fc\u30d0\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u30fc\u306e\u30b5\u30a4\u30ba\uff1aHTTP\/2\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u4f7f\u7528\u306b\u3088\u308a\u30d8\u30c3\u30c0\u30fc\u30b5\u30a4\u30ba\u304c\u5927\u5e45\u306b\u7e2e\u5c0f\u3055\u308c\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u304c\u3001SPDY\u306f\u3053\u306e\u7279\u5b9a\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u308b\u30d8\u30c3\u30c0\u30fc\u306e\u307f\u3092\u7e2e\u5c0f\u3057\u307e\u3059\u3002HTTPS\u306f\u3001\u8981\u6c42\u30b3\u30de\u30f3\u30c9\u3067\u3082\u5fdc\u7b54\u30b3\u30de\u30f3\u30c9\u3067\u3082\u30d8\u30c3\u30c0\u30fc\u30b5\u30a4\u30ba\u3092\u7e2e\u5c0f\u3057\u307e\u305b\u3093\u3002<\/li>\n<li>\u30b5\u30fc\u30d0\u30fc\u5fdc\u7b54\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30b5\u30a4\u30ba\uff1a\u4e00\u65b9\u3001HTTP\/2\u306e\u30b5\u30fc\u30d0\u30fc\u5fdc\u7b54\u306e\u30b5\u30a4\u30ba\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u4ee3\u308f\u308a\u306b\u3088\u308a\u5f37\u529b\u306a\u6697\u53f7\u5316\u304c\u63d0\u4f9b\u3055\u308c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<li>\u4f7f\u7528\u3055\u308c\u308bTCP\u63a5\u7d9a\u306e\u6570\uff1aHTTP\/2\u3068SPDY\u306f\u3001\u8907\u6570\u306e\u540c\u6642\u306e\u8981\u6c42\u3092\u51e6\u7406\uff08\u591a\u91cd\u5316\uff09\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u4f7f\u7528\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30bd\u30fc\u30b9\u3092\u6e1b\u3089\u3057\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002<\/li>\n<li>\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\uff1aHTTP\u306fSPDY\u3088\u308a\u3082\u660e\u3089\u304b\u306b\u9ad8\u901f\u3067\u3057\u305f\u3002\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u3068\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5\u6a5f\u80fd\u304c\u306a\u3044\u305f\u3081\u3001HTTPS\u306f\u5927\u5e45\u306b\u9045\u304f\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<\/ul>\n<section id=\"http2_browser_support_availability\">\n<h2><a id=\"http2_browser_support_availability\"><\/a>\u3088\u308a\u826f\u3044\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u6e96\u5099\uff1aHTTP\/2\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\u3068\u53ef\u7528\u6027<\/h2>\n<p>\u9069\u5207\u306a\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u3001\u304a\u3088\u3073\u30e2\u30d0\u30a4\u30eb\u306e\u30b5\u30dd\u30fc\u30c8\u306a\u3089\u3059\u3067\u306bHTTP\/2\u5bfe\u5fdc\u3067\u3059\u3002HTTP1.x\u3092\u5b9f\u884c\u3059\u308b\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306bHTTP\/2\u3092\u5b9f\u88c5\u3057\u3066\u3082\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u304c\u3001\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e\u66f4\u65b0\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u8a00\u8a9e\u3068\u898b\u306a\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u65b0\u3057\u3044\u8a00\u8a9e\u3068\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u305d\u306e\u8a00\u8a9e\u304c\u5341\u5206\u306b\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u540c\u69d8\u306b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u3092\u3001HTTP\/2\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30dd\u30fc\u30c8<\/h3>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u8005\u306f\u3001HTTP\/2\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u304a\u3088\u3073\u30e2\u30d0\u30a4\u30eb\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u3092\u69cb\u6210\u3059\u308b\u3053\u3068\u306b\u3064\u3044\u3066\u5fc3\u914d\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<a href=\"http:\/\/caniuse.com\/#search=http2\" target=\"_blank\" rel=\"noopener noreferrer\">Google Chrome\u3068Firefox\u306f\u3053\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u9577\u5e74\u524d\u306b\u5c0e\u5165\u3057\u3066\u304d\u3066<\/a>\u3001Apple\u306f2014\u5e74\u306bSafari\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306bHTTP\/2\u30d6\u30e9\u30a6\u30b6\u30fc\u30b5\u30dd\u30fc\u30c8\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002Internet Explorer\u3067\u306f\u3001\u6700\u65b0\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bWindows 8\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 772px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-browser-support.png\" alt=\"\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\" width=\"772\" height=\"134\"><figcaption class=\"wp-caption-text\">\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<p>Android\u306e\u3075\u3055\u308f\u3057\u3044\u540d\u524d\u306eBrowser\u3001Android\u304a\u3088\u3073iOS\u306eChrome\u3001iOS 8\u4ee5\u964d\u306eSafari\u306a\u3069\u306e\u4e3b\u8981\u306a\u30e2\u30d0\u30a4\u30eb\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u30a6\u30a7\u30d6\u30a2\u30af\u30bb\u30b9\u306eHTTP\/2\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306eHTTP\/2\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3067\u898b\u3089\u308c\u308b\u3088\u3046\u306a\u6700\u5927\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5229\u70b9\u3092\u4f53\u9a13\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u304a\u3088\u3073\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u6700\u65b0\u306e\u5b89\u5b9a\u30ea\u30ea\u30fc\u30b9\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306e\u30b5\u30dd\u30fc\u30c8\uff1aApache\u3068Nginx<\/h3>\n<p>\u793e\u5185\u3067\u307e\u305f\u306f\u30af\u30e9\u30a6\u30c9\u3067\u30b5\u30fc\u30d0\u30fc\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001HTTP\/2\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306b\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3092\u66f4\u65b0\u304a\u3088\u3073\u518d\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/\">Kinsta<\/a>\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u3082\u3061\u308d\u3093\u3002\u3059\u3067\u306b\u5909\u66f4\u3055\u308c\u3066\u3044\u307e\u3059\uff01\u524d\u8ff0\u306e\u8a00\u8a9e\u306e\u4f8b\u3068\u540c\u69d8\u306b\u3001\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u914d\u4fe1\u3055\u308c\u308b\u60c5\u5831\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u8a2a\u554f\u8005\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u304c\u66f4\u65b0\u304a\u3088\u3073\u518d\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u3001HTTP\/2\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/news.netcraft.com\/archives\/2014\/05\/07\/may-2014-web-server-survey.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u3059\u3079\u3066\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306e66\uff05<\/a>\u3092\u5360\u3081\u308b<a href=\"http:\/\/nginx.org\/\">Nginx<\/a>\u30b5\u30fc\u30d0\u30fc\u306fHTTP\/2\u306e\u7d44\u307f\u8fbc\u307f\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u304c\u3001<a href=\"http:\/\/www.apache.org\/\">Apache<\/a>\u30b5\u30fc\u30d0\u30fc\u306f<a href=\"https:\/\/code.google.com\/p\/mod-spdy\/\" target=\"_blank\" rel=\"noopener noreferrer\">mod_spdy \u30e2\u30b8\u30e5\u30fc\u30eb<\/a>\u3092\u4f7f\u7528\u3057\u3066HTTP\/2\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001Apache 2.2\u30b5\u30fc\u30d0\u30fc\u306e\u591a\u91cd\u5316\u3084\u30d8\u30c3\u30c0\u30fc\u5727\u7e2e\u306a\u3069\u306eSPDY\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u305f\u3081\u306bGoogle\u306b\u3088\u308a\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u304c\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u304cApache Software Foundation\u306b\u5bc4\u8d08\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<figure style=\"width: 431px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/04\/http2-nginx-apache-support.png\" alt=\"HTTP\/2 Nginx\u304a\u3088\u3073Apache\u30b5\u30dd\u30fc\u30c8\" width=\"431\" height=\"324\"><figcaption class=\"wp-caption-text\">HTTP\/2 Nginx\u304a\u3088\u3073Apache\u30b5\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<h2><a id=\"how_you_can_start_using_http2\"><\/a>HTTP\/2\u306e\u4f7f\u7528\u3092\u958b\u59cb\u3059\u308b\u306b\u306f<\/h2>\n<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306bHTTP\/2\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u7c21\u5358\u306a\u624b\u9806\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3><span class=\"section10_numberline\"><span class=\"section10_number\">\u30b9\u30c6\u30c3\u30d71<\/span><\/span><\/h3>\n<ul>\n<li>HTTPS\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u4fe1\u983c\u3067\u304d\u308b\u767a\u884c\u6a5f\u95a2\u304b\u3089SSL\u307e\u305f\u306fTLS\u8a3c\u660e\u66f8\u3092\u8cfc\u5165\u3059\u308b\u304b\u3001\u5229\u7528\u53ef\u80fd\u3067\u3042\u308c\u3070<a href=\"https:\/\/kinsta.com\/jp\/blog\/free-ssl-certificate\/\" target=\"_blank\" rel=\"noopener noreferrer\">Let&#8217;s Encrypt<\/a>\u306e\u7121\u6599\u306eSSL\u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/li>\n<li>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a3c\u660e\u66f8\u3092\u30a2\u30af\u30c6\u30a3\u30d6\u5316\u3057\u307e\u3059\u3002<\/li>\n<li>\u8a3c\u660e\u66f8\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/li>\n<li>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u66f4\u65b0\u3057\u3066HTTPS\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u6709\u52b9\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h4>Kinsta\u30af\u306e\u304a\u5ba2\u69d8\u3067\u3042\u308b\u5834\u5408<\/h4>\n<p>Kinsta\u306e\u304a\u5ba2\u69d8\u306b\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-domains\/wordpress-ssl-certificates\/\" target=\"_blank\" rel=\"noopener noreferrer\">SSL\u8a3c\u660e\u66f8\u3092\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a>\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_31763\" aria-describedby=\"caption-attachment-31763\" style=\"width: 2868px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-31763 size-full\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0.png\" alt=\"Let\u2019s Encrypt\u8a3c\u660e\u66f8\u306e\u8ffd\u52a0\" width=\"2868\" height=\"1356\" srcset=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0.png 2868w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0-300x142.png 300w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0-1024x484.png 1024w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0-768x363.png 768w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0-1536x726.png 1536w, https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2020\/05\/add-let-s-encrypt-certificate0-2048x968.png 2048w\" sizes=\"auto, (max-width: 2868px) 100vw, 2868px\" \/><figcaption id=\"caption-attachment-31763\" class=\"wp-caption-text\">Let\u2019s Encrypt\u8a3c\u660e\u66f8\u306e\u8ffd\u52a0<\/figcaption><\/figure>\n<h3>\u30b9\u30c6\u30c3\u30d72<\/h3>\n<p>\u30b5\u30fc\u30d0\u30fc\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306a\u3069\u306e\u57fa\u76e4\u3068\u306a\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u304cHTTP\/2\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002Nginx\u30b5\u30fc\u30d0\u30fc\u3067\u306fHTTP\/2\u306e\u7d44\u307f\u8fbc\u307f\u30b5\u30dd\u30fc\u30c8\u304c\u3042\u308a\u307e\u3059\u304c\u3001Apache\u3067\u306f\u7d44\u307f\u8fbc\u307f\u30b5\u30dd\u30fc\u30c8\u304c2015\u5e7410\u6708\u306b\uff08\u30d0\u30fc\u30b8\u30e7\u30f32.4\u3067\uff09\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002\u3064\u307e\u308a\u3001Apache\u30b5\u30fc\u30d0\u30fc\u3067\u306fHTTP\/2\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u30b5\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u901a\u4fe1\u3092\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u306b\u8ffd\u52a0\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u5fc5\u8981\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6ce8\uff1a<strong>Kinsta\u3067\u306f\u3001HTTPS\u3092\u4f7f\u7528\u3059\u308b\u3059\u3079\u3066\u306e\u30b5\u30a4\u30c8\u3092\u5bfe\u8c61\u306b\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067HTTP\/2\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059<\/strong>\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d73<\/h3>\n<p>HTTP\/2\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u66f4\u65b0\u3057\u3066\u69cb\u6210\u3057\u3066\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002Apache\u30b5\u30fc\u30d0\u30fc\u306e\u69cb\u6210\u3068\u30c6\u30b9\u30c8\u306e\u624b\u9806\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/www.gatherdigital.co.uk\/blog\/how-to-setup-http-2-support\/527\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u3061\u3089\u306e\u30ea\u30bd\u30fc\u30b9<\/a>\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002HTTP\/2\u304c\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067\u5229\u7528\u53ef\u80fd\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u306b\u3064\u3044\u3066\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u554f\u3044\u5408\u308f\u305b\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d74<\/h3>\n<p><a href=\"https:\/\/tools.keycdn.com\/http2-test\" target=\"_blank\" rel=\"noopener noreferrer\">\u3053\u3061\u3089\u306e\u30c4\u30fc\u30eb<\/a>\u3092\u4f7f\u7528\u3057\u3066\u3001HTTP\/2\u304c\u9069\u5207\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<section id=\"section11\">\n<h2>\u7d50\u8ad6<\/h2>\n<p>HTTP\/2\u306e\u4eca\u5f8c\u306e\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u306b\u304a\u3051\u308b\u652f\u914d\u3068\u8987\u6a29\u306f\u907f\u3051\u3089\u308c\u307e\u305b\u3093\u3002\u3053\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u9769\u65b0\u7684\u306a\u30c7\u30fc\u30bf\u8ee2\u9001\u6a5f\u80fd\u3067\u30b5\u30a4\u30d0\u30fc\u30ef\u30fc\u30eb\u30c9\u3092\u5909\u9769\u3057\u305fHTTP1.x\u306e\u907a\u7523\u3092\u7d99\u627f\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002HTTP\/2\u306f\u3001HTTP1.x\u304c\u5f53\u6642\u30c7\u30fc\u30bf\u901a\u4fe1\u30e1\u30ab\u30cb\u30ba\u30e0\u306b\u5bfe\u3057\u3066\u78ba\u7acb\u3057\u305f\u30a4\u30ce\u30d9\u30fc\u30b7\u30e7\u30f3\u30ae\u30e3\u30c3\u30d7\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u4e0a\u7d1a\u306e\u6280\u8853\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u5f93\u6765\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001HTTP\/2\u3092\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u306f\u3001\u30da\u30fc\u30b8\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u9577\u3044\u65c5\u306e\u7b2c\u4e00\u6b69\u306b\u3059\u304e\u307e\u305b\u3093\u3002\u30b9\u30d4\u30fc\u30c9\u30a2\u30c3\u30d7\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306e\u5bfe\u51e6\u3001\u305d\u3057\u3066\u512a\u308c\u305f\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u95a2\u9023\u3059\u308b\u6226\u7565\u7684\u306a\u30d3\u30b8\u30cd\u30b9\u4e0a\u306e\u5229\u70b9\u306b\u3064\u3044\u3066\u306f\u3001Kinsta\u306e\u5165\u9580\u66f8\u300c<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u901f\u5ea6\u306e\u6700\u9069\u5316\u306b\u95a2\u3059\u308b\u521d\u5fc3\u8005\u5411\u3051\u30ac\u30a4\u30c9<\/a>\u300d\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/section>\n<\/section>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u3061\u3089\u306e\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u304a\u3088\u3073\u958b\u767a\u8005\u5411\u3051\u306bHTTP\/2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u57fa\u672c\u60c5\u5831\u304b\u3089\u3088\u308a\u8a73\u7d30\u306a\u5185\u5bb9\u307e\u3067\u3002HTTP\/ \u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u3059\u3079\u3066\u3002<\/p>\n","protected":false},"author":6,"featured_media":63873,"template":"","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"class_list":["post-28032","learn","type-learn","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>HTTP\/2\u3068\u306f\uff1f\uff08Kinsta\u306b\u3088\u308b\u30b9\u30fc\u30d1\u30fc\u30ac\u30a4\u30c9\uff09<\/title>\n<meta name=\"description\" content=\"\u3053\u3061\u3089\u306e\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u304a\u3088\u3073\u958b\u767a\u8005\u5411\u3051\u306bHTTP\/2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u57fa\u672c\u60c5\u5831\u304b\u3089\u3088\u308a\u8a73\u7d30\u306a\u5185\u5bb9\u307e\u3067\u3002HTTP\/ \u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u3059\u3079\u3066\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:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How HTTP\/2 Is Speeding up the Web\" \/>\n<meta property=\"og:description\" content=\"\u3053\u3061\u3089\u306e\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u304a\u3088\u3073\u958b\u767a\u8005\u5411\u3051\u306bHTTP\/2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u57fa\u672c\u60c5\u5831\u304b\u3089\u3088\u308a\u8a73\u7d30\u306a\u5185\u5bb9\u307e\u3067\u3002HTTP\/ \u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u3059\u3079\u3066\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\" \/>\n<meta property=\"og:site_name\" content=\"Kinsta\u00ae\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Kinsta-Japan-334616080691171\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-03T15:28:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2025\/01\/JP-Homepage-featured-image-1024x536.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"536\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"The Ultimate Guide to HTTP\/2\" \/>\n<meta name=\"twitter:description\" content=\"\u3053\u3061\u3089\u306e\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u304a\u3088\u3073\u958b\u767a\u8005\u5411\u3051\u306bHTTP\/2\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u57fa\u672c\u60c5\u5831\u304b\u3089\u3088\u308a\u8a73\u7d30\u306a\u5185\u5bb9\u307e\u3067\u3002HTTP\/ \u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u3059\u3079\u3066\u3002\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/kinsta.com\/wp-content\/uploads\/2016\/04\/what-is-http2-2.png\" \/>\n<meta name=\"twitter:site\" content=\"@Kinsta_JP\" \/>\n<meta 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