{"id":16357,"date":"2025-12-29T18:21:32","date_gmt":"2025-12-29T17:21:32","guid":{"rendered":"https:\/\/webhosting.de\/warum-http-status-codes-hosting-performance-serverpower\/"},"modified":"2025-12-29T18:21:32","modified_gmt":"2025-12-29T17:21:32","slug":"%e3%81%aa%e3%81%9c-http-%e3%82%b9%e3%83%86%e3%83%bc%e3%82%bf%e3%82%b9%e3%82%b3%e3%83%bc%e3%83%89-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/warum-http-status-codes-hosting-performance-serverpower\/","title":{"rendered":"HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u304c\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u7406\u7531"},"content":{"rendered":"<p><strong>HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/strong> \u30b5\u30fc\u30d0\u30fc\u306e\u5fdc\u7b54\u901f\u5ea6\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u65b9\u6cd5\u3001\u30af\u30ed\u30fc\u30e9\u30fc\u306e\u4e88\u7b97\u306e\u4f7f\u7528\u65b9\u6cd5\u3092\u76f4\u63a5\u5236\u5fa1\u3057\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u9855\u8457\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u7279\u5b9a\u306e\u30b3\u30fc\u30c9\u304c\u3001\u8aad\u307f\u8fbc\u307f\u6642\u9593\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u3001SEO \u52b9\u679c\u3092\u52a0\u901f\u307e\u305f\u306f\u6e1b\u901f\u3055\u305b\u308b\u7406\u7531\u3001\u305d\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e9\u30f3\u30ad\u30f3\u30b0\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u305d\u306e\u30b3\u30fc\u30c9\u3092\u3069\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u304b\u3092\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<ul>\n  <li><strong>200\/304<\/strong>\uff1a\u8fc5\u901f\u306a\u914d\u4fe1\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3088\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u8efd\u6e1b<\/li>\n  <li><strong>4xx\/5xx<\/strong>: \u30af\u30ed\u30fc\u30ea\u30f3\u30b0\u4e88\u7b97\u3068\u30e6\u30fc\u30b6\u30fc\u306e\u4fe1\u983c<\/li>\n  <li><strong>301 \u3067\u306f\u306a\u304f 302<\/strong>\uff1a\u30c1\u30a7\u30fc\u30f3\u3084\u30e9\u30f3\u30ad\u30f3\u30b0\u306e\u4f4e\u4e0b\u3092\u56de\u907f<\/li>\n  <li><strong>503 + \u30ea\u30c8\u30e9\u30a4\u30fb\u30a2\u30d5\u30bf\u30fc<\/strong>: SEO \u306b\u60aa\u5f71\u97ff\u3092\u4e0e\u3048\u305a\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6642\u306b\u4fdd\u8b77\u3057\u307e\u3059<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong>: \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u30a8\u30e9\u30fc\u306e\u6025\u4e0a\u6607\u3092\u691c\u77e5<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/serverraum-hostingcodes-5742.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306b\u3088\u308b\u30ed\u30fc\u30c9\u6642\u9593\u3068\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u306e\u5236\u5fa1<\/h2>\n\n<p>\u983c\u308a\u306b\u3057\u3066\u3044\u308b\u306e\u306f <strong>200 OK<\/strong>, \u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u65b0\u3057\u304f\u7528\u610f\u3055\u308c\u3066\u3044\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u7d20\u65e9\u304f\u914d\u4fe1\u3067\u304d\u308b\u5834\u5408\u306f\u3001\u6700\u521d\u306e\u30d0\u30a4\u30c8\u307e\u3067\u306e\u6642\u9593\u304c\u77ed\u304f\u306a\u308b\u304b\u3089\u3002\u30ea\u30bd\u30fc\u30b9\u306b\u5909\u66f4\u304c\u306a\u3044\u5834\u5408\u306f\u3001 <strong>304<\/strong> \u30d6\u30e9\u30a6\u30b6\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u3066\u5e2f\u57df\u5e45\u3092\u7bc0\u7d04\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u304c\u8efd\u6e1b\u3055\u308c\u3001\u56de\u7dda\u3092\u901a\u904e\u3059\u308b\u30d0\u30a4\u30c8\u6570\u304c\u6e1b\u5c11\u3059\u308b\u305f\u3081\u3001LCP \u3084 INP \u306a\u3069\u306e\u6307\u6a19\u304c\u5b89\u5b9a\u3057\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u304c\u306a\u3044\u5834\u5408\u3001\u4e0d\u8981\u306a 200 \u5fdc\u7b54\u304c\u5f37\u5236\u3055\u308c\u3001\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u304c\u80a5\u5927\u5316\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30d4\u30fc\u30af\u6642\u306b\u3059\u3050\u306b\u9855\u8457\u306b\u306a\u308a\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001304 \u306e\u6069\u6075\u3092\u53d7\u3051\u308b\u30eb\u30fc\u30c8\u3068\u3001\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3055\u308c\u305f\u5fdc\u7b54\u306a\u3069 200 \u304c\u9069\u5207\u306a\u30eb\u30fc\u30c8\u3092\u4f53\u7cfb\u7684\u306b\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u6761\u4ef6\u4ed8\u304d\u30ea\u30af\u30a8\u30b9\u30c8\u3001HEAD\u3001\u304a\u3088\u3073 Range \u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b<\/h2>\n\n<p>\u518d\u691c\u8a3c\u3092\u52b9\u7387\u7684\u306b\u884c\u3046\u305f\u3081\u306b\u3001\u30d6\u30e9\u30a6\u30b6\u3068\u30af\u30ed\u30fc\u30e9\u30fc\u306f\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002 <strong>If-None-Match<\/strong> (ETag\u7528)\u304a\u3088\u3073 <strong>If-Modified-Since<\/strong> (Last-Modified \u7528) \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6a5f\u80fd\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u8ee2\u9001\u5168\u4f53\u3092\u7bc0\u7d04\u3057\u3001I\/O \u306e\u8ca0\u8377\u3092\u9ad8\u901f\u306a\u30d8\u30c3\u30c0\u30fc\u6bd4\u8f03\u306b\u79fb\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5909\u66f4\u304c\u307b\u3068\u3093\u3069\u306a\u3044\u30ea\u30bd\u30fc\u30b9\u306b\u3064\u3044\u3066\u306f\u3001 <strong>HEAD<\/strong>-\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u307f\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001\u305f\u3068\u3048\u3070\u53ef\u7528\u6027\u30c1\u30a7\u30c3\u30af\u3084\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u306a\u3069\u306b\u6709\u7528\u3067\u3059\u3002\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\uff08\u30d3\u30c7\u30aa\u3001PDF\uff09\u306e\u5834\u5408\u306f\u3001 <strong>\u30ec\u30f3\u30b8\u30ea\u30af\u30a8\u30b9\u30c8<\/strong> \u305d\u3057\u3066\u8a31\u53ef\u3059\u308b <strong>206 \u90e8\u5206\u30b3\u30f3\u30c6\u30f3\u30c4<\/strong>, \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u5fc5\u8981\u306a\u30bb\u30b0\u30e1\u30f3\u30c8\u306e\u307f\u3092\u53d6\u5f97\u3057\u3001\u4e2d\u65ad\u3055\u308c\u305f\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3092\u5b8c\u5168\u306b\u518d\u30ed\u30fc\u30c9\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u91cd\u8981\uff1a206 \u306f Accept-Ranges \u304a\u3088\u3073 Content-Range \u3068\u6b63\u3057\u304f\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u3057\u306a\u3044\u3068\u3001\u30d7\u30ec\u30a4\u30e4\u30fc\u306e\u30ea\u30c8\u30e9\u30a4\u3084\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u306e\u30d4\u30fc\u30af\u304c\u767a\u751f\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30a8\u30e9\u30fc\u30af\u30e9\u30b9\u3092\u6b63\u3057\u304f\u89e3\u91c8\u3057\u3001\u8fc5\u901f\u306b\u4fee\u6b63\u3059\u308b<\/h2>\n\n<p>\u79c1\u306f\u6b21\u306e2\u3064\u3092\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u3044\u308b\u3002 <strong>4xx<\/strong> \u305d\u3057\u3066 <strong>5xx<\/strong>, \u4e21\u30af\u30e9\u30b9\u306f\u307e\u3063\u305f\u304f\u7570\u306a\u308b\u5bfe\u5fdc\u3092\u5fc5\u8981\u3068\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u983b\u7e41\u306a 404 \u30a8\u30e9\u30fc\u306f\u60c5\u5831\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u6b20\u9665\u3092\u793a\u3057\u3066\u304a\u308a\u3001\u30af\u30ed\u30fc\u30eb\u30ea\u30bd\u30fc\u30b9\u3092\u6d6a\u8cbb\u3059\u308b\u305f\u3081\u3001301 \u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3067\u9069\u5207\u306a\u30d1\u30b9\u306b\u8ee2\u9001\u3059\u308b\u304b\u3001\u4ee3\u66ff\u6848\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002 500 \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u307e\u305f\u306f\u30a2\u30d7\u30ea\u306b\u554f\u984c\u304c\u3042\u308a\u3001\u30af\u30ed\u30fc\u30e9\u30fc\u306e\u901f\u5ea6\u304c\u4f4e\u4e0b\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u96e2\u8131\u3059\u308b\u305f\u3081\u3001\u512a\u5148\u7684\u306b\u5bfe\u51e6\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5236\u9650\u3084\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u3088\u308a 500 \u30a8\u30e9\u30fc\u304c\u6025\u5897\u3057\u307e\u3059\u3002\u305d\u306e\u80cc\u666f\u3068\u5bfe\u51e6\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u3061\u3089\u3067\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e6%8e%a5%e7%b6%9a%e5%88%b6%e9%99%90-500-%e3%82%a8%e3%83%a9%e3%83%bc-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%82%aa%e3%83%97\/\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u63a5\u7d9a\u5236\u9650<\/a>. \u4e00\u6642\u7684\u306a\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306f\u3001503 \u3068 Retry-After \u3092\u4f7f\u3063\u3066\u3001\u30dc\u30c3\u30c8\u304c\u5f8c\u3067\u518d\u3073\u30a2\u30af\u30bb\u30b9\u3057\u3066\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u306b\u5f71\u97ff\u304c\u51fa\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/httpstatus_hosting_7432.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3092\u7c21\u5358\u3001\u60c5\u5831\u8c4a\u5bcc\u3001\u6b63\u78ba\u306b\u914d\u4fe1\u3059\u308b<\/h2>\n\n<p>\u6301\u3063\u3066\u3044\u308b <strong>\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3092\u30b9\u30ea\u30e0\u5316<\/strong> \uff08\u6700\u5c0f\u9650\u306e CSS\/JS\u3001\u5927\u304d\u306a\u753b\u50cf\u306a\u3057\uff09\u306b\u3088\u308a\u3001404\/410\/5xx \u3067\u3082\u8fc5\u901f\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3059\u3050\u306b\u4ee3\u66ff\u6848\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u691c\u7d22\u30dc\u30c3\u30af\u30b9\u3001\u30c8\u30c3\u30d7\u30ea\u30f3\u30af\u3001\u660e\u78ba\u306a\u8aac\u660e\u306b\u3088\u308a\u3001\u96e2\u8131\u7387\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30da\u30fc\u30b8\u81ea\u4f53\u306f <em>\u53f3<\/em> \u30b9\u30c6\u30fc\u30bf\u30b9\u3092\u9001\u4fe1\uff1a404 \u30aa\u30d7\u30c6\u30a3\u30af\u30b9\u3067 200 \u306f <strong>\u30bd\u30d5\u30c8404<\/strong> \u307e\u305f\u3001\u30af\u30ed\u30fc\u30eb\u52b9\u7387\u3082\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u540c\u69d8\u306b\u3001500 \u306f\u91cd\u3044\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3092\u30ed\u30fc\u30c9\u3059\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u9759\u7684\u306a\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30da\u30fc\u30b8\u306f\u3001\u7279\u306b\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u3001CPU \u304a\u3088\u3073\u30e1\u30e2\u30ea\u306e\u6d88\u8cbb\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30d6\u30ec\u30fc\u30ad\u306a\u3057\u306e\u8fc2\u56de\uff1a301\u306f\u30af\u30ea\u30fc\u30f3\u3001302\u306f\u307e\u308c<\/h2>\n\n<p>\u6c38\u7d9a\u7684\u306a\u79fb\u52d5\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f\u4ee5\u4e0b\u3092\u91cd\u8996\u3057\u3066\u3044\u307e\u3059\u3002 <strong>301<\/strong>, \u3053\u306e\u30b3\u30fc\u30c9\u306f\u4fe1\u53f7\u3068\u30ea\u30f3\u30af\u529b\u3092\u4f1d\u9054\u3059\u308b\u305f\u3081\u3067\u3059\u3002302 \u306f\u3001\u30af\u30ed\u30fc\u30e9\u30fc\u304c\u76ee\u6a19\u3092\u65e9\u6025\u306b\u6700\u7d42\u7684\u306a\u3082\u306e\u3068\u5224\u65ad\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u77ed\u3044\u30c6\u30b9\u30c8\u3084\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u7528\u306b\u4e88\u7d04\u3057\u3066\u3044\u307e\u3059\u3002\u9577\u3044\u30c1\u30a7\u30fc\u30f3\u306f\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3092\u5897\u52a0\u3055\u305b\u3001\u30ea\u30b9\u30af\u3092\u5897\u5927\u3055\u305b\u308b\u305f\u3081\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306f 1 \u30db\u30c3\u30d7\u306b\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002\u30eb\u30fc\u30d7\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u306e\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3067\u8aac\u660e\u3057\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%aa%e3%83%80%e3%82%a4%e3%83%ac%e3%82%af%e3%83%88%e3%83%ab%e3%83%bc%e3%83%97-%e3%83%af%e3%83%bc%e3%83%89%e3%83%97%e3%83%ac%e3%82%b9%e3%81%ae%e3%83%92%e3%83%b3%e3%83%88-%e3%82%a6%e3%82%a7%e3%83%96\/\">WordPress \u3067\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u30eb\u30fc\u30d7<\/a>. \u30b5\u30fc\u30d0\u30fc\u5074\u3067\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u8a18\u9332\u3057\u3066\u3001\u983b\u5ea6\u3001\u30bd\u30fc\u30b9\u3001\u5b9b\u5148\u3092\u660e\u78ba\u306b\u628a\u63e1\u3057\u3001\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3092\u7d20\u65e9\u304f\u30ab\u30c3\u30c8\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>307\/308\u3001HSTS\u3001\u304a\u3088\u3073\u4e00\u8cab\u6027\u306e\u3042\u308b\u6b63\u898f\u5316<\/h2>\n\n<p>HTTP\u30e1\u30bd\u30c3\u30c9 <em>\u53d7\u3051\u53d6\u308b<\/em> \uff08\u4f8b\uff1aPOST\uff09\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 <strong>307<\/strong> (\u4e00\u6642\u7684) \u307e\u305f\u306f <strong>308<\/strong> (\u6c38\u7d9a\u7684) 302\/301 \u306e\u4ee3\u308f\u308a\u306b\u3002\u3053\u308c\u306b\u3088\u308a\u3001GET \u3068\u3057\u3066\u8aa4\u3063\u305f\u7e70\u308a\u8fd4\u3057\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u3092\u9632\u304e\u3001\u30d5\u30a9\u30fc\u30e0\u3084 API \u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002http \u304b\u3089 https \u3078\u306e\u79fb\u884c\u306b\u306f\u3001\u4ee5\u4e0b\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u307e\u3059\u3002 <strong>\u552f\u4e00\u306e301\/308<\/strong> HSTS \u3092\u4f7f\u7528\u3057\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u5c06\u6765\u306e\u547c\u3073\u51fa\u3057\u3092 TLS \u3067\u76f4\u63a5\u958b\u59cb\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001 <strong>\u30c1\u30e3\u30cd\u30ea\u30f3\u30b0<\/strong>\uff1a\u512a\u5148\u3059\u308b\u30db\u30b9\u30c8\u3068\u30d1\u30b9\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\uff08www\u306e\u6709\u7121\u3001\u30b9\u30e9\u30c3\u30b7\u30e5\u306e\u898f\u5247\u3001\u5c0f\u6587\u5b57\uff09\u30921\u3064\u3060\u3051\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u5148\u3001\u6b63\u898f\u30bf\u30b0\u304c\u540c\u3058\u65b9\u91dd\u306b\u5f93\u3046\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u77db\u76fe\u3057\u305f\u4fe1\u53f7\u306f\u30af\u30ed\u30fc\u30eb\u4e88\u7b97\u3092\u6d88\u8cbb\u3057\u3001\u30bd\u30d5\u30c8\u91cd\u8907\u3092\u751f\u3080\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u3001ETag\u3001TTL \u306e\u6b63\u3057\u3044\u4f7f\u7528\u65b9\u6cd5<\/h2>\n\n<p>\u30b3\u30f3\u30d0\u30a4\u30f3 <strong>\u30a4\u30fc\u30bf\u30b0<\/strong>, \u3001Last-Modified\u3001Cache-Control \u3092\u4f7f\u7528\u3057\u3066\u3001304 \u3092\u610f\u56f3\u7684\u306b\u30c8\u30ea\u30ac\u30fc\u3057\u3001\u5909\u66f4\u304c\u3042\u3063\u305f\u5834\u5408\u306b\u306e\u307f 200 \u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u9759\u7684\u30a2\u30bb\u30c3\u30c8\u306b\u306f\u9577\u3044 TTL \u3068\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092\u9069\u7528\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u4e0d\u5b89\u3092\u4e0e\u3048\u308b\u3053\u3068\u306a\u304f\u5373\u5ea7\u306b\u7121\u52b9\u5316\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 HTML \u306f\u3001\u8a2a\u554f\u8005\u304c\u6700\u521d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u7d20\u65e9\u304f\u95b2\u89a7\u3057\u3001\u66f4\u65b0\u3092\u9759\u304b\u306b\u518d\u8aad\u307f\u8fbc\u307f\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u3088\u308a\u77ed\u3044\u30ec\u30b9\u30dd\u30f3\u30b9\u307e\u305f\u306f Stale-While-Revalidate \u3092\u4f7f\u7528\u3057\u3066\u5fdc\u7b54\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u4f5c\u696d\u8ca0\u8377\u3092\u5236\u9650\u3057\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3092\u9632\u304e\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u4e00\u8cab\u6027\u3067\u3059\u3002CDN\u3001\u30a8\u30c3\u30b8\u3001\u30aa\u30ea\u30b8\u30f3\u9593\u3067\u30d8\u30c3\u30c0\u30fc\u304c\u7570\u306a\u308b\u3068\u3001\u4e0d\u8981\u306a\u518d\u691c\u8a3c\u304c\u767a\u751f\u3057\u3001\u5f85\u3061\u6642\u9593\u304c\u9855\u8457\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>Vary\u3001Cookie\u3001\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7ba1\u7406<\/h2>\n\n<p><strong>Vary\u30d8\u30c3\u30c0\u30fc<\/strong> \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u30d0\u30ea\u30a2\u30f3\u30c8\u3092\u533a\u5225\u3059\u308b\u65b9\u6cd5\u3092\u5236\u5fa1\u3057\u307e\u3059\uff08\u4f8b\uff1aAccept-Encoding\u3001User-Agent\u3001Accept-Language\uff09\u3002\u79c1\u306f Vary \u3092\u63a7\u3048\u3081\u306b\u3001\u304b\u3064\u7684\u3092\u7d5e\u3063\u3066\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u5e83\u3059\u304e\u308b\u30d0\u30ea\u30a2\u30f3\u30c8\uff08Vary: Cookie \u306a\u3069\uff09\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3092 <em>\u7121\u52b9\u306b\u3059\u308b<\/em> \u305d\u3057\u3066\u518d\u691c\u8a3c\u3092\u5f37\u5236\u3057\u307e\u3059\u3002\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u3092\u53b3\u5bc6\u306b\u533a\u5225\u3057\u307e\u3059\u3002 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u53ef\u80fd\u306a\u7bc4\u56f2<\/strong> (HTML\u30b7\u30a7\u30eb)\u3068\u52d5\u7684\u30a2\u30a4\u30e9\u30f3\u30c9(\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u307e\u305f\u306f\u30a8\u30c3\u30b8\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0)\u3092\u4f7f\u7528\u3057\u3066\u3001\u5927\u90e8\u5206\u306b\u5bfe\u3057\u3066304\/long-TTL\u3092\u5f15\u304d\u7d9a\u304d\u6709\u52b9\u306b\u3057\u307e\u3059\u3002CDN\u30ec\u30d9\u30eb\u3067\u306f\u3001\u4e00\u8cab\u6027\u3092\u91cd\u8996\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30b5\u30ed\u30b2\u30fc\u30c8\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/strong>\/\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u30eb\u30fc\u30eb\u3068\u540c\u4e00\u306e ETag \u6226\u7565\u306b\u3088\u308a\u3001\u30aa\u30ea\u30b8\u30f3\u30c1\u30a7\u30c3\u30af\u3068\u30a8\u30c3\u30b8\u30c1\u30a7\u30c3\u30af\u304c\u4e92\u3044\u306b\u5e72\u6e09\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u5f31\u3044 ETag (W\/) \u306f\u3001\u30d0\u30a4\u30c8\u5358\u4f4d\u306e\u5b8c\u5168\u306a\u540c\u4e00\u6027\u304c\u4e0d\u8981\u306a\u5834\u5408\u306b\u306e\u307f\u4f7f\u7528\u3057\u307e\u3059\u3002\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u3001304 \u3092\u78ba\u5b9f\u306b\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u305f\u3081\u306b\u5f37\u3044 ETag \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/http-status-hosting-performance-8762.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>429\u3001\u30d0\u30c3\u30af\u30aa\u30d5\u6226\u7565\u3068\u5236\u5fa1\u8ca0\u8377<\/h2>\n\n<p>\u60aa\u7528\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b API \u304a\u3088\u3073\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f <strong>429 \u30ea\u30af\u30a8\u30b9\u30c8\u304c\u591a\u3059\u304e\u308b<\/strong> 1\u3001\u542b\u3080 <strong>\u518d\u8a66\u884c\u5f8c<\/strong>, \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u516c\u5e73\u306a\u30d0\u30c3\u30af\u30aa\u30d5\u6642\u9593\u3092\u4e0e\u3048\u308b\u305f\u3081\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304c\u4fdd\u8b77\u3055\u308c\u3001\u6b63\u5f53\u306a\u30e6\u30fc\u30b6\u30fc\u304c 5xx \u30a8\u30e9\u30fc\u306b\u906d\u9047\u3059\u308b\u3053\u3068\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u6642\u306b\u306f\u3001429\/503 \u3092 <strong>\u30c8\u30fc\u30af\u30f3\/IP \u3054\u3068\u306e\u30ec\u30fc\u30c8\u5236\u9650<\/strong> \u307e\u305f\u3001\u9ad8\u4fa1\u306a\u30d7\u30ed\u30bb\u30b9\uff08PDF\u751f\u6210\u306a\u3069\uff09\u3092\u30ad\u30e5\u30fc\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u307e\u3059\u3002\u91cd\u8981\uff1aAPI\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u5236\u9650\u3092\u900f\u660e\u6027\u3092\u3082\u3063\u3066\u4f1d\u3048\u3001\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3092\u5c0f\u3055\u304f\u4fdd\u3064\u3053\u3068\u3067\u3001\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u81ea\u4f53\u304c\u30a4\u30f3\u30d5\u30e9\u306b\u8ca0\u62c5\u3092\u304b\u3051\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u30af\u30ed\u30fc\u30e9\u30fc\u306b\u3064\u3044\u3066\u306f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u304c\u5b89\u5b9a\u3059\u308b\u3088\u3046\u306b\u3001\u91cd\u8981\u306a\u30eb\u30fc\u30c8\u3067\u306f\u53b3\u3057\u3044\u5236\u9650\u3067\u306f\u306a\u304f\u3001\u7de9\u3084\u304b\u306a\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3001\u30ed\u30b0\u3001\u304a\u3088\u3073\u610f\u5473\u306e\u3042\u308b SLO<\/h2>\n\n<p>\u6e2c\u308b <strong>\u73fe\u72b6\u7dad\u6301\u7387<\/strong> \u30eb\u30fc\u30c8\u3001\u30c7\u30d0\u30a4\u30b9\u3001\u6642\u9593\u5e2f\u3054\u3068\u306b\u3001\u7570\u5e38\u5024\u3092\u3059\u3050\u306b\u898b\u3064\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u660e\u78ba\u306a\u3057\u304d\u3044\u5024\u3092\u6301\u3064\u30a8\u30e9\u30fc\u4e88\u7b97\u306f\u3001\u4ecb\u5165\u306e\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u3084\u76ee\u6a19\u306e\u900f\u660e\u6027\u7dad\u6301\u306b\u5f79\u7acb\u3063\u3066\u3044\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u30ed\u30b0\u3001RUM \u30c7\u30fc\u30bf\u3001\u5408\u6210\u30c1\u30a7\u30c3\u30af\u306f\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u3068\u30dc\u30c3\u30c8\u306e\u9055\u3044\u3092\u8a8d\u8b58\u3059\u308b\u305f\u3081\u306b\u3001\u4e92\u3044\u306b\u88dc\u5b8c\u3057\u5408\u3046\u3082\u306e\u3067\u3059\u3002 \u30a2\u30e9\u30fc\u30c8\u306b\u306f\u76f2\u76ee\u7684\u306b\u53cd\u5fdc\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30c7\u30d7\u30ed\u30a4\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u3001\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u5909\u66f4\u3068\u95a2\u9023\u4ed8\u3051\u3066\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30ea\u30ed\u30fc\u30f3\u30c1\u5f8c\u306e\u7a81\u7136\u306e 404 \u30a8\u30e9\u30fc\u306e\u6ce2\u3084\u3001\u8a2d\u5b9a\u5909\u66f4\u5f8c\u306e 5xx \u30a8\u30e9\u30fc\u306e\u30d4\u30fc\u30af\u306a\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u78ba\u5b9f\u306b\u8a8d\u8b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>SLI\u3001\u5206\u6563\u3001\u539f\u56e0\u306e\u8fc5\u901f\u306a\u7279\u5b9a<\/h2>\n\n<p>\u79c1\u306f\u8ffd\u8de1\u3057\u3066\u3044\u307e\u3059 <strong>\u6d41\u901a<\/strong> \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\uff08\u5e73\u5747\u5024\u3060\u3051\u3067\u306a\u304f\uff09\uff1a95\/99 \u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\u306f\u3001\u7570\u5e38\u5024\u304c\u30e6\u30fc\u30b6\u30fc\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u306e\u7a0b\u5ea6\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u3054\u3068\u306b\u3001\u524d\u5f8c\u306e\u66f2\u7dda\u3092\u6bd4\u8f03\u3057\u3066\u3044\u307e\u3059\u3002304 \u306e\u5272\u5408\u304c\u6025\u843d\u3057\u305f\u308a\u3001302 \u304c\u6025\u4e0a\u6607\u3057\u305f\u308a\u3059\u308b\u5834\u5408\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u3084\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3059\u3002 \u30e6\u30fc\u30b6\u30fc\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\/ASN \u3092\u4f7f\u7528\u3057\u3066\u30dc\u30c3\u30c8\u3068\u4eba\u9593\u3092\u533a\u5225\u3057\u3001\u305d\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30d1\u30bf\u30fc\u30f3\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u30dc\u30c3\u30c8\u306e\u307f\u306b 5xx \u306e\u5897\u52a0\u304c\u898b\u3089\u308c\u308b\u5834\u5408\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3084 WAF \u30eb\u30fc\u30eb\u304c\u539f\u56e0\u3067\u3042\u308a\u3001\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3067\u306f\u306a\u3044\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u30ed\u30b0\u304b\u3089\u4ee5\u4e0b\u3092\u62bd\u51fa\u3057\u307e\u3059\u3002 <strong>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u30db\u30c3\u30d7<\/strong> \u30c1\u30a7\u30fc\u30f3\u30d2\u30fc\u30c8\u30de\u30c3\u30d7\u3092\u69cb\u7bc9\u3057\u30011\u30db\u30c3\u30d7\u3054\u3068\u306e\u5404\u30c1\u30a7\u30fc\u30f3\u3092\u30b9\u30d7\u30ea\u30f3\u30c8\u3067\u51e6\u7406\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u8868\uff1a\u3088\u304f\u4f7f\u308f\u308c\u308b\u30b3\u30fc\u30c9\u3068\u305d\u306e\u52b9\u679c<\/h2>\n\n<p>\u4ee5\u4e0b\u306e\u6982\u8981\u3092\u3001\u79c1\u306f <strong>\u30ab\u30f3\u30cb\u30f3\u30b0\u30da\u30fc\u30d1\u30fc<\/strong> \u30b9\u30d7\u30ea\u30f3\u30c8\u3067\u306e\u6bce\u65e5\u306e\u30c1\u30a7\u30c3\u30af\u3068\u512a\u5148\u9806\u4f4d\u4ed8\u3051\u306b\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/th>\n      <th>\u30ab\u30c6\u30b4\u30ea\u30fc<\/th>\n      <th>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff<\/th>\n      <th>SEO\u306e\u5f71\u97ff<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>200 OK<\/td>\n      <td>\u6210\u529f<\/td>\n      <td>\u65b0\u9bae\u306a\u8cc7\u6e90\u306e\u8fc5\u901f\u306a\u914d\u9001<\/td>\n      <td>\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u4f4e\u3044\u5834\u5408\u306f\u30dd\u30b8\u30c6\u30a3\u30d6<\/td>\n    <\/tr>\n    <tr>\n      <td>304 Not Modified<\/td>\n      <td>\u6210\u529f<\/td>\n      <td>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5229\u7528\u3001\u5e2f\u57df\u5e45\u306e\u7bc0\u7d04<\/td>\n      <td>\u30dd\u30b8\u30c6\u30a3\u30d6\u3001\u30af\u30ed\u30fc\u30eb\u52b9\u7387\u306e\u5411\u4e0a<\/td>\n    <\/tr>\n    <tr>\n      <td>301 \u6c38\u4e45\u7684\u306b\u79fb\u52d5<\/td>\n      <td>\u6c17\u6674\u3089\u3057<\/td>\n      <td>\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5c11\u306a\u304f\u3001\u30c1\u30a7\u30fc\u30f3\u3092\u56de\u907f<\/td>\n      <td>\u30dd\u30b8\u30c6\u30a3\u30d6\u3001\u30b7\u30b0\u30ca\u30eb\u306f\u7dad\u6301\u3055\u308c\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>302 \u898b\u3064\u304b\u308a\u307e\u3057\u305f<\/td>\n      <td>\u6c17\u6674\u3089\u3057<\/td>\n      <td>\u4e00\u6642\u7684\u306a\u3082\u306e\u3067\u3001\u4e0d\u660e\u77ad\u3055\u3092\u751f\u3058\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/td>\n      <td>\u4e2d\u7acb\u304b\u3089\u3084\u3084\u30cd\u30ac\u30c6\u30a3\u30d6\uff08\u7d99\u7d9a\u7684\uff09<\/td>\n    <\/tr>\n    <tr>\n      <td>404 Not Found<\/td>\n      <td>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30a8\u30e9\u30fc<\/td>\n      <td>\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u306a\u3044\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u96e2\u8131\u3059\u308b<\/td>\n      <td>\u5426\u5b9a\u7684\u3001\u4e88\u7b97\u304c\u7121\u99c4\u306b\u306a\u3063\u305f<\/td>\n    <\/tr>\n    <tr>\n      <td>410\u30b4\u30fc\u30f3<\/td>\n      <td>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30a8\u30e9\u30fc<\/td>\n      <td>\u660e\u78ba\u306a\u9664\u53bb\u3001\u5f8c\u7d9a\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<\/td>\n      <td>\u6c5a\u67d3\u7269\u8cea\u306b\u95a2\u3057\u3066\u306f\u4e2d\u7acb\u304b\u3089\u826f\u597d<\/td>\n    <\/tr>\n    <tr>\n      <td>500 Internal Server Error<\/td>\n      <td>\u30b5\u30fc\u30d0\u30fc\u30a8\u30e9\u30fc<\/td>\n      <td>\u5fdc\u7b54\u304c\u4e2d\u65ad\u3001\u30af\u30ed\u30fc\u30eb\u901f\u5ea6\u306e\u4f4e\u4e0b<\/td>\n      <td>\u983b\u767a\u3059\u308b\u3068\u975e\u5e38\u306b\u60aa\u3044<\/td>\n    <\/tr>\n    <tr>\n      <td>502 \u60aa\u3044\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4<\/td>\n      <td>\u30b5\u30fc\u30d0\u30fc\u30a8\u30e9\u30fc<\/td>\n      <td>\u4e0a\u6d41\u30a8\u30e9\u30fc\u3001\u5f85\u6a5f\u30ea\u30b9\u30af<\/td>\n      <td>\u5426\u5b9a\u7684\u3001\u4fe1\u983c\u304c\u4f4e\u4e0b<\/td>\n    <\/tr>\n    <tr>\n      <td>503 \u30b5\u30fc\u30d3\u30b9\u5229\u7528\u4e0d\u53ef<\/td>\n      <td>\u30b5\u30fc\u30d0\u30fc\u30a8\u30e9\u30fc<\/td>\n      <td>\u4e00\u6642\u7684\u3001Retry-After \u3067\u5236\u5fa1\u53ef\u80fd<\/td>\n      <td>\u3084\u3084\u30cd\u30ac\u30c6\u30a3\u30d6\u3001\u9069\u5ea6\u306b\u8abf\u6574\u53ef\u80fd<\/td>\n    <\/tr>\n    <tr>\n      <td>504 \u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/td>\n      <td>\u30b5\u30fc\u30d0\u30fc\u30a8\u30e9\u30fc<\/td>\n      <td>\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u901f\u5ea6\u4f4e\u4e0b\u306b\u3088\u308b\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/td>\n      <td>\u30cd\u30ac\u30c6\u30a3\u30d6\u3001\u9ad8\u3044\u76f4\u5e30\u7387<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/httpstatus-techoffice-3729.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>HTTP\/2\u3001HTTP\/3\u3001\u304a\u3088\u3073\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u5bfe\u3059\u308b\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6<\/h2>\n\n<p>\u8d77\u52d5\u3055\u305b\u308b <strong>HTTP\/2<\/strong> \u307e\u305f\u3001HTTP\/3 \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u63a5\u7d9a\u304c\u8907\u6570\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u540c\u6642\u306b\u52b9\u7387\u7684\u306b\u8ee2\u9001\u3057\u3001\u30d8\u30c3\u30c9\u30fb\u30aa\u30d6\u30fb\u30e9\u30a4\u30f3\u30fb\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u306b\u3088\u308b\u901f\u5ea6\u4f4e\u4e0b\u304c\u767a\u751f\u3057\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u305f\u9577\u3044\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306f\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u7bc0\u7d04\u3057\u3001TTFB \u3092\u77ed\u7e2e\u3057\u307e\u3059\u3002API \u306b\u9ad8\u8ca0\u8377\u304c\u304b\u304b\u308b\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3054\u3068\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u5236\u9650\u3057\u3066\u30015xx \u304a\u3088\u3073 504 \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u4fdd\u8b77\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/api%e3%83%ac%e3%83%bc%e3%83%88%e5%88%b6%e9%99%90%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e6%82%aa%e7%94%a8%e9%98%b2%e6%ad%a2%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3\/\">API\u30ec\u30fc\u30c8\u306e\u5236\u9650<\/a>. TLS \u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3068 OCSP \u30b9\u30bf\u30c3\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u5404\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30b9\u30c8\u3092\u5897\u52a0\u3055\u305b\u308b\u8ffd\u52a0\u306e\u9045\u5ef6\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306f\u5b89\u5b9a\u3057\u305f\u72b6\u614b\u3092\u4fdd\u3061\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3067\u306f\u306a\u304f\u3001\u5b9f\u969b\u306e\u72b6\u614b\u3092\u53cd\u6620\u3057\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u30a8\u30c3\u30b8\u306b\u304a\u3051\u308bCDN\u6226\u7565\u3068\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/h2>\n\n<p>A <strong>\u30b7\u30fc\u30c7\u30a3\u30fc\u30a8\u30cc<\/strong> \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u3001TTL \u304c\u9069\u5207\u306b\u9023\u643a\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u3001\u30aa\u30ea\u30b8\u30f3\u3078\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002304 \u3092\u30a8\u30c3\u30b8\u3067\u5fdc\u7b54\u3059\u3079\u304d\u304b\u3001\u30aa\u30ea\u30b8\u30f3\u3067\u5fdc\u7b54\u3059\u3079\u304d\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u591a\u304f\u306e\u5834\u5408\u3001\u30aa\u30ea\u30b8\u30f3\u3078\u306e\u7d99\u7d9a\u7684\u306a\u6761\u4ef6\u4ed8\u304d\u30ea\u30af\u30a8\u30b9\u30c8\u3088\u308a\u3082\u3001\u5236\u5fa1\u3055\u308c\u305f\u518d\u691c\u8a3c\u6a5f\u80fd\u3092\u5099\u3048\u305f\u9577\u3044\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u65b9\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002HTML \u306b\u3064\u3044\u3066\u306f\u3001\u5373\u5ea7\u306b <strong>\u30de\u30a4\u30af\u30ed\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0<\/strong> \uff08\u6570\u79d2\u304b\u3089\u6570\u5206\uff09\u3067\u3001\u6700\u65b0\u6027\u3092\u640d\u306a\u3046\u3053\u3068\u306a\u304f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30d4\u30fc\u30af\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002. <strong>Stale-If-Error<\/strong> \u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u5909\u52d5\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u3078\u306e 5xx \u30d0\u30fc\u30b9\u30c8\u3092\u9632\u6b62\u3057\u307e\u3059\u3002CDN \u306f\u3001\u77ed\u671f\u7684\u306b\u306f\u53e4\u3044\u3082\u306e\u306e\u9ad8\u901f\u306a\u5fdc\u7b54\u3092\u63d0\u4f9b\u3057\u3001\u30b5\u30a4\u30c8\u306e\u54c1\u8cea\u306b\u5bfe\u3059\u308b\u8a8d\u8b58\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u30af\u30ea\u30fc\u30f3\u306a <strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u306e\u5b9a\u7fa9<\/strong> \uff08\u30db\u30b9\u30c8\u3001\u30d1\u30b9\u3001\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u5fc5\u8981\u306a\u5834\u5408\u306e\u307f\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u7206\u767a\u7684\u306b\u5897\u52a0\u3057\u305f\u308a\u3001200\/304 \u306e\u30af\u30a9\u30fc\u30bf\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/httpstatushostingdesk8432.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30e2\u30d0\u30a4\u30eb\u30d5\u30a1\u30fc\u30b9\u30c8\u3068\u4e00\u8cab\u6027\u306e\u3042\u308b\u56de\u7b54<\/h2>\n\n<p>\u79c1\u306f\u914d\u9054\u3057\u307e\u3059 <strong>\u30e2\u30d0\u30a4\u30eb<\/strong> \u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u3068\u540c\u4e00\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u3068\u30e9\u30f3\u30ad\u30f3\u30b0\u4fe1\u53f7\u306e\u3070\u3089\u3064\u304d\u3092\u9632\u304e\u307e\u3059\u3002m.\u30c9\u30e1\u30a4\u30f3\u3001\u30b5\u30d6\u30d5\u30a9\u30eb\u30c0\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30eb\u30fc\u30c8\u9593\u306e\u9055\u3044\u306f\u3001\u7d50\u679c\u306b\u4e00\u8cab\u6027\u304c\u306a\u3044\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002CDN\u304a\u3088\u3073\u30a8\u30c3\u30b8\u6a5f\u80fd\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u3084\u5fdc\u7b54\u3092\u5909\u66f4\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5225\u9014\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u306b\u95a2\u3059\u308b\u7d71\u4e00\u7684\u306a\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001Googlebot\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u306e\u4e88\u671f\u305b\u306c\u4e8b\u614b\u3092\u56de\u907f\u3057\u307e\u3059\u3002 \u5b9f\u969b\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001200\u3001301\u3001404 \u304c\u3069\u3053\u3067\u3082\u540c\u3058\u3088\u3046\u306b\u8fc5\u901f\u306b\u8fd4\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u56fd\u969b\u5316\u3001\u30b8\u30aa\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3001\u304a\u3088\u3073Vary\u306e\u843d\u3068\u3057\u7a74<\/h2>\n\n<p>\u8a00\u8a9e\u3084\u56fd\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f\u4ee5\u4e0b\u3092\u660e\u78ba\u306b\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30b8\u30aa\u30ed\u30ab\u30ea\u30bc\u30fc\u30b7\u30e7\u30f3<\/strong> \uff08\u4f8b\uff1a\u901a\u8ca8\uff09\u304a\u3088\u3073 <strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210<\/strong> \uff08\u8a00\u8a9e\u30d0\u30fc\u30b8\u30e7\u30f3\uff09\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u53ef\u80fd\u306a URL \u304c\u5909\u66f4\u3055\u308c\u308b\u5834\u5408\u3001IP \u306b\u57fa\u3065\u3044\u3066\u81ea\u52d5 302 \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306f\u306a\u304f\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b 200\/301 \u30d5\u30ed\u30fc\u3092\u63d0\u4f9b\u3057\u3001\u660e\u78ba\u306a\u30eb\u30fc\u30c8\uff08\u4f8b\uff1a\/de\/\u3001\/en\/\uff09\u3067\u4f5c\u696d\u3057\u307e\u3059\u3002 \u30b8\u30aa\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u660e\u78ba\u306a\u30b3\u30fc\u30c9\uff08\u4f8b\uff1a403\uff09\u3068\u3001\u5c0f\u3055\u304f\u9ad8\u901f\u306a\u30da\u30fc\u30b8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u30bd\u30d5\u30c8 404 \u3068\u89e3\u91c8\u3055\u308c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u6ce8\u610f\u30c6\u30ad\u30b9\u30c8\u3092\u542b\u3080 200 \u306f\u9001\u4fe1\u3057\u307e\u305b\u3093\u3002\u8a00\u8a9e\u306b\u4f9d\u5b58\u3059\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u3064\u3044\u3066\u306f\u3001 <strong>Vary: Accept-Language<\/strong> \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u4e0d\u5fc5\u8981\u306b\u5206\u65ad\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u5b9f\u969b\u306b\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u5b58\u5728\u3059\u308b\u5834\u6240\u306e\u307f\u3002.<\/p>\n\n<h2>\u975e\u540c\u671f\u6027\u3092\u6b63\u3057\u304f\u4f1d\u3048\u308b\uff1a202 \u3068 303<\/h2>\n\n<p>\u9577\u6642\u9593\u306e\u51e6\u7406\uff08\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3001\u753b\u50cf\u51e6\u7406\uff09\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002 <strong>202 \u53d7\u7406<\/strong> \u304a\u3088\u3073 <strong>\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong> \u30b9\u30c6\u30fc\u30bf\u30b9\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002\u5b8c\u4e86\u5f8c\u3001 <strong>303 \u53c2\u7167<\/strong> \u7d50\u679c\u306b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u304c\u9632\u6b62\u3055\u308c\u30015xx \u306e\u30ea\u30b9\u30af\u304c\u4f4e\u6e1b\u3055\u308c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30dd\u30fc\u30ea\u30f3\u30b0\u307e\u305f\u306f\u30d7\u30c3\u30b7\u30e5\u3092\u7d9a\u884c\u3059\u308b\u65b9\u6cd5\u3092\u660e\u78ba\u306b\u4f1d\u3048\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3067\u306f\u3001\u6570\u5206\u5f85\u3063\u305f\u5f8c\u306b 200 \u3067\u63a5\u7d9a\u3092\u5207\u65ad\u3059\u308b\u3088\u308a\u3082\u3001\u3053\u306e\u65b9\u6cd5\u306e\u65b9\u304c\u660e\u3089\u304b\u306b\u9ad8\u901f\u3067\u3059\u3002.<\/p>\n\n<h2>\u5b9f\u8df5\uff1a30\u65e5\u9593\u306e\u512a\u5148\u9806\u4f4d\u8a08\u753b<\/h2>\n\n<p>\u7b2c1\u9031\u306f\u3001\u4ee5\u4e0b\u3092\u8a18\u9332\u3057\u307e\u3059\u3002 <strong>\u5b9f\u7e3e\u5024<\/strong>\uff1a\u30eb\u30fc\u30c8\u3001\u30c7\u30d0\u30a4\u30b9\u3001\u56fd\u3001\u6642\u9593\u3054\u3068\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u6bd4\u7387\u3001\u304a\u3088\u3073\u30a8\u30e9\u30fc\u306e\u30db\u30c3\u30c8\u30b9\u30dd\u30c3\u30c8\u3002\u7b2c 2 \u9031\u306f\u3001\u8fc5\u901f\u306a\u6210\u679c\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3059\u3002\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u30c1\u30a7\u30fc\u30f3\u3092\u77ed\u7e2e\u3057\u3001404 \u3092 410 \u307e\u305f\u306f 301 \u306b\u5909\u66f4\u3057\u3001503 \u3092 Retry-After \u3067\u6b63\u3057\u304f\u914d\u4fe1\u3057\u307e\u3059\u3002 \u7b2c3\u9031\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u306b\u3064\u3044\u3066\u53d6\u308a\u4e0a\u3052\u307e\u3059\u3002ETag\u3001Last-Modified\u3001\u5dee\u5225\u5316\u3055\u308c\u305fTTL\u3001HTML\u306eStale-While-Revalidate\u306a\u3069\u3067\u3059\u3002\u7b2c4\u9031\u306f\u3001\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u30c8\u30d4\u30c3\u30af\u3092\u7de0\u3081\u304f\u304f\u308a\u307e\u3059\u3002HTTP\/2\/3\u3001Keep-Alive\u3001TLS\u306e\u6700\u9069\u5316\u3001\u30af\u30ea\u30fc\u30f3\u306a\u30ed\u30ae\u30f3\u30b0\u306a\u3069\u3067\u3059\u3002\u6700\u5f8c\u306b\u3001\u30a2\u30e9\u30fc\u30c8\u306e\u8abf\u6574\u3001SLO\u306e\u5b9a\u7fa9\u3001\u30ea\u30ea\u30fc\u30b9\u30d7\u30ed\u30bb\u30b9\u3078\u306e\u30c1\u30a7\u30c3\u30af\u306e\u7d44\u307f\u8fbc\u307f\u306b\u3064\u3044\u3066\u53d6\u308a\u4e0a\u3052\u307e\u3059\u3002.<\/p>\n\n<h2>\u5b9a\u671f\u76e3\u67fb\u306e\u305f\u3081\u306e\u904b\u7528\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n\n<ul>\n  <li>\u30eb\u30fc\u30c8\u5225\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u5206\u5e03\uff1a200\/304 \u5bfe 3xx\/4xx\/5xx \u3092\u5206\u96e2\u3057\u3001\u5916\u308c\u5024\u3092\u30de\u30fc\u30af\u3059\u308b<\/li>\n  <li>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u30db\u30c3\u30d7\uff1a\u6700\u59271\u30db\u30c3\u30d7\u3001http\u2192https\u304a\u3088\u3073www\u2192non-www\u306e\u4e00\u8cab\u6027<\/li>\n  <li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3001ETag\u3001\u6700\u7d42\u66f4\u65b0\u65e5\u3001\u53e4\u3044\u30eb\u30fc\u30eb\u3001\u77db\u76fe\u3059\u308b\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u306a\u3057<\/li>\n  <li>Vary \u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\uff1a\u5fc5\u8981\u306a\u30c7\u30a3\u30e1\u30f3\u30b7\u30e7\u30f3\u306e\u307f\u3001\u4e00\u5f8b\u306e Cookie \u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u306f\u4f7f\u7528\u3057\u306a\u3044<\/li>\n  <li>\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\uff1a\u6b63\u3057\u3044\u30b3\u30fc\u30c9\uff08404\/410\/5xx\uff09\u3001\u7c21\u5358\u306a\u30de\u30fc\u30af\u30a2\u30c3\u30d7\u3001\u5185\u90e8\u691c\u7d22\/\u30ea\u30f3\u30af\u3042\u308a<\/li>\n  <li>429\/503: \u30ea\u30c8\u30e9\u30a4\u5f8c\u304c\u6b63\u3057\u3044\u3001\u5236\u9650\u304c\u6587\u66f8\u5316\u3055\u308c\u3066\u3044\u308b\u3001\u76e3\u8996\u3067\u30e1\u30c8\u30ea\u30af\u30b9\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b<\/li>\n  <li>CDN\u30a8\u30c3\u30b8\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u3001TTL\u3001HTML\u7528\u30de\u30a4\u30af\u30ed\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0\u3001Stale-If-Error\u6709\u52b9<\/li>\n  <li>HTTP\/2\/3 \u30a2\u30af\u30c6\u30a3\u30d6\u3001Keep-Alive \u304c\u9069\u5207\u306b\u8abf\u6574\u3055\u308c\u3001TLS \u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u4f4e\u3044<\/li>\n  <li>\u30e2\u30d0\u30a4\u30eb\/\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u30d1\u30ea\u30c6\u30a3\uff1a\u540c\u3058\u30b3\u30fc\u30c9\u3001\u540c\u3058\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3001\u540c\u3058\u30d8\u30c3\u30c0\u30fc<\/li>\n  <li>\u30c7\u30d7\u30ed\u30a4\u30ac\u30fc\u30c9\u30ec\u30fc\u30eb\uff1aCI \u3067\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u30c1\u30a7\u30c3\u30af\u3001\u30ed\u30fc\u30eb\u30a2\u30a6\u30c8\u5f8c\u306e\u5408\u6210\u30c6\u30b9\u30c8<\/li>\n<\/ul>\n\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u3088\u304f\u3042\u308b\u8aa4\u89e3<\/h2>\n\n<p>\u79c1\u306f\u3088\u304f\u3001 <strong>302<\/strong> 301 \u304c\u5fc5\u8981\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001404 \u304c\u6052\u4e45\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30e9\u30f3\u30ad\u30f3\u30b0\u304c\u4f4e\u4e0b\u3057\u3066\u3044\u307e\u3059\u3002\u540c\u69d8\u306b\u3001410 \u304c\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u524a\u9664\u3055\u308c\u305f\u3053\u3068\u3092\u3088\u308a\u660e\u78ba\u306b\u793a\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001404 \u304c\u6a19\u6e96\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002403 \u304c 401 \u306b\u53d6\u3063\u3066\u4ee3\u308f\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u8a8d\u8a3c\u306e\u65b9\u304c\u3088\u308a\u9069\u5207\u306a\u6307\u793a\u3067\u3042\u308a\u3001\u305d\u3046\u3057\u306a\u3044\u3068\u30af\u30ed\u30fc\u30e9\u30fc\u304c\u8aa4\u3063\u305f\u53cd\u5fdc\u3092\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002204 \u304c\u5b9f\u969b\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u304c\u6df7\u4e71\u3057\u3001\u4e0d\u5fc5\u8981\u306a\u554f\u3044\u5408\u308f\u305b\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002 \u307e\u305f\u3001\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3067 200 \u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u554f\u984c\u304c\u96a0\u3055\u308c\u3001\u30c7\u30fc\u30bf\u54c1\u8cea\u304c\u4f4e\u4e0b\u3057\u3001\u3042\u3089\u3086\u308b\u30ec\u30d9\u30eb\u3067\u4e88\u7b97\u304c\u7121\u99c4\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/http-status-hosting-9472.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068<\/h2>\n\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/strong> 200\u3001304\u3001301\u30014xx\u30015xx \u306b\u3064\u3044\u3066\u660e\u78ba\u306a\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u7a4d\u6975\u7684\u306a\u624b\u6bb5\u3068\u3057\u3066\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u3001\u30af\u30ea\u30fc\u30f3\u306a\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b\u5fdc\u7b54\u306b\u3088\u308a\u3001\u30b9\u30d4\u30fc\u30c9\u304c\u5411\u4e0a\u3057\u3001\u30b3\u30b9\u30c8\u304c\u524a\u6e1b\u3055\u308c\u3001SEO \u304c\u5f37\u5316\u3055\u308c\u307e\u3059\u3002\u30ed\u30b0\u3001RUM\u3001\u5b9a\u7fa9\u3055\u308c\u305f SLO \u306b\u3088\u308b\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u554f\u984c\u3092\u611f\u3058\u308b\u524d\u306b\u554f\u984c\u3092\u53ef\u8996\u5316\u3057\u307e\u3059\u3002 HTTP\/2\/3 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