{"id":16581,"date":"2026-01-05T18:23:33","date_gmt":"2026-01-05T17:23:33","guid":{"rendered":"https:\/\/webhosting.de\/http-cache-headers-sabotieren-caching-cachefix\/"},"modified":"2026-01-05T18:23:33","modified_gmt":"2026-01-05T17:23:33","slug":"http%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%83%98%e3%83%83%e3%83%80%e3%83%bc%e3%81%8c%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%82%92%e5%a6%a8%e5%ae%b3%e3%81%99%e3%82%8b-cachefix","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/http-cache-headers-sabotieren-caching-cachefix\/","title":{"rendered":"HTTP \u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u3092\u59a8\u5bb3\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>HTTP 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src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/http-cache-header-debug-3471.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>HTTP\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u30fc\u304c\u5b9f\u969b\u306b\u5236\u5fa1\u3059\u308b\u3082\u306e<\/h2>\n\n<p>Cache-Control\u3001Expires\u3001ETag\u3001Last-Modified \u306f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u6700\u65b0\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3001\u305d\u306e\u6709\u52b9\u671f\u9593\u3001\u304a\u3088\u3073\u30d6\u30e9\u30a6\u30b6\u304c\u3044\u3064\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u884c\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002 <strong>\u6700\u9ad8\u5e74\u9f62<\/strong> \u79c1\u306f\u3001public\/private 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<strong>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u30d1\u30b9<\/strong>: \u30a8\u30e9\u30fc\u304c\u30e9\u30a4\u30d6\u3067\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u5bfe\u3057\u3066\u8fc5\u901f\u306a\u30d1\u30fc\u30b8\uff08\u30a8\u30c3\u30b8\uff09\u3068\u5f37\u5236\u7684\u306a\u518d\u691c\u8a3c\uff08must-revalidate\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002API \u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u306f\u77ed\u3044 TTL \u304c\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u304c\u3001 <em>stale<\/em>-\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306b\u30e6\u30fc\u30b6\u30fc\u304c\u56de\u7b54\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u3001\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u30eb\u30fc\u30c8\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7\u3054\u3068\u306b\u6587\u66f8\u5316\u3057\u3001\u30d3\u30eb\u30c9\/\u30c7\u30d7\u30ed\u30a4\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306b\u7d44\u307f\u8fbc\u3080\u3053\u3068\u3067\u3001\u300c\u30b5\u30a4\u30ec\u30f3\u30c8\u300d\u306a\u5909\u66f4\u306b\u3088\u3063\u3066\u30d5\u30ec\u30c3\u30b7\u30e5\u30dd\u30ea\u30b7\u30fc\u304c\u610f\u56f3\u305b\u305a\u7121\u52b9\u5316\u3055\u308c\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002.<\/p>\n\n<h2>\u8a2d\u5b9a\u30df\u30b9\u304c\u6226\u7565\u3092\u53f0\u7121\u3057\u306b\u3059\u308b<\/h2>\n\n<p>\u77ed\u3059\u304e\u308b <strong>TTL<\/strong> 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\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u5b8c\u5168\u306b\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3001\u8ce2\u304f\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e0d\u8981\u306a\u30af\u30a8\u30ea\u6587\u5b57\u5217\u306f\u3001\u65ad\u7247\u5316\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30ad\u30fc<\/strong> HIT\u7387\u3092\u5927\u5e45\u306b\u4f4e\u4e0b\u3055\u305b\u307e\u3059\u3002Origin\u304cno-cache\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001CDN\u306f\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7121\u8996\u3057\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u7d4c\u8def\u304c\u9577\u304f\u306a\u308a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<p>\u305d\u306e\u7d50\u679c\u306f\u3001\u30e1\u30c8\u30ea\u30af\u30b9\u306b\u8868\u308c\u3066\u3044\u307e\u3059\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u6570\u306e\u5897\u52a0\u3001\u3088\u308a\u9ad8\u3044 <strong>CPU\u6642\u9593<\/strong> \u305d\u3057\u3066\u5fdc\u7b54\u6642\u9593\u306e\u5897\u52a0\u3002\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u30d4\u30fc\u30af\u306b\u306a\u308b\u3068\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306e\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u30e1\u30ea\u30c3\u30c8\u3092\u611f\u3058\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u5e2f\u57df\u5e45\u306e\u6d88\u8cbb\u91cf\u304c\u5897\u52a0\u3057\u307e\u3059\u3002DevTools \u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\u3053\u306e\u3088\u3046\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u3059\u3050\u306b\u8a8d\u8b58\u3067\u304d\u307e\u3059\u3002\u307e\u305a\u3001 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/strong>, \u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u3092\u5897\u5f37\u3059\u308b\u524d\u306b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/httpcachemeeting_7294.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b3\u30f3\u30c6\u30f3\u30c4\u30bf\u30a4\u30d7\u3054\u3068\u306e\u63a8\u5968\u4e8b\u9805\uff1a\u9069\u5207\u306a\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6<\/h2>\n\n<p>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u3001\u79c1\u306f\u5225\u306e <strong>\u30d8\u30c3\u30c0\u30fc<\/strong>, \u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u9069\u5207\u306b\u6a5f\u80fd\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6700\u65b0\u306e\u30c7\u30fc\u30bf\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u79c1\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u3001\u5b9f\u7e3e\u306e\u3042\u308b\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u5185\u5bb9<\/th>\n      <th>\u63a8\u5968\u3055\u308c\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1<\/th>\n      <th>\u59a5\u5f53\u6027<\/th>\n      <th>\u30d2\u30f3\u30c8<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>JS\/CSS\/\u753b\u50cf\uff08\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\uff09<\/td>\n      <td>public, max-age=31536000, <strong>\u4e0d\u5909<\/strong><\/td>\n      <td>12\u30f6\u6708<\/td>\n      <td>\u30cf\u30c3\u30b7\u30e5\u3092\u4f7f\u7528\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u540d\uff08\u4f8b\uff1aapp.abc123.js\uff09<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30d5\u30a9\u30f3\u30c8\u30d5\u30a1\u30a4\u30eb (woff2)<\/td>\n      <td>public, max-age=31536000, immutable<\/td>\n      <td>12\u30f6\u6708<\/td>\n      <td>CDN \u304b\u3089\u30ed\u30fc\u30c9\u3059\u308b\u5834\u5408\u306f CORS \u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044<\/td>\n    <\/tr>\n    <tr>\n      <td>HTML\uff08\u516c\u958b\uff09<\/td>\n      <td>public, max-age=300, stale-while-revalidate=86400<\/td>\n      <td>5\u5206<\/td>\n      <td>\u30b7\u30e7\u30fc\u30c8 <strong>\u65b0\u9bae\u3055<\/strong>, \u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u306e\u30b9\u30e0\u30fc\u30ba\u306a\u30ea\u30ed\u30fc\u30c9<\/td>\n    <\/tr>\n    <tr>\n      <td>HTML\uff08\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\uff09<\/td>\n      <td>private\u3001max-age=0\u3001no-cache<\/td>\n      <td>\u518d\u8a8d\u5b9a<\/td>\n      <td>\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u306e\u8ee2\u9001\u4e0d\u53ef<\/td>\n    <\/tr>\n    <tr>\n      <td>API<\/td>\n      <td>public, max-age=60\u2013300, stale-if-error=86400<\/td>\n      <td>1\uff5e5\u5206<\/td>\n      <td>\u30a8\u30e9\u30fc\u767a\u751f\u6642 <strong>stale<\/strong> \u548c\u3089\u3052\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<p>\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u5178\u578b\u7684\u306a\u30b5\u30a4\u30c8\u3092\u7db2\u7f85\u3057\u3066\u304a\u308a\u3001\u4e00\u8cab\u6027\u306e\u3042\u308b <strong>\u30eb\u30fc\u30eb<\/strong> \u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u30a2\u30bb\u30c3\u30c8\u306b\u306f\u660e\u78ba\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092\u884c\u3044\u3001max-age \u5024\u304c\u9577\u3059\u304e\u3066\u53e4\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u914d\u4fe1\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002HTML \u306f\u77ed\u547d\u3067\u3042\u308a\u3001\u518d\u691c\u8a3c\u306b\u3088\u3063\u3066\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002API \u306b\u306f\u77ed\u3044\u6642\u9593\u304c\u8a2d\u5b9a\u3055\u308c\u3001stale-if-error \u306b\u3088\u3063\u3066\u5b89\u5168\u7b56\u304c\u8b1b\u3058\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u3082\u30da\u30fc\u30b8\u306f <strong>\u4f7f\u7528\u53ef\u80fd<\/strong>.<\/p>\n\n<h2>\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u6b63\u3057\u304f\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b<\/h2>\n\n<p>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3068\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u306f\u3001\u72ec\u81ea\u306e\u30eb\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002. <strong>301\/308<\/strong> (\u6c38\u7d9a\u7684) \u306f\u3001CDN \u3084\u30d6\u30e9\u30a6\u30b6\u3067\u975e\u5e38\u306b\u9577\u671f\u9593\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u9023\u9396\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u3053\u3053\u3067\u306f\u6570\u65e5\u304b\u3089\u6570\u9031\u9593\u3068\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002. <strong>302\/307<\/strong> \uff08\u4e00\u6642\u7684\u306a\uff09TTL\u306f\u77ed\u304f\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u3001\u4e00\u6642\u7684\u306a\u72b6\u614b\u304c\u300c\u51cd\u7d50\u300d\u3055\u308c\u3061\u3083\u3046\u3088\u3002404\/410\u306e\u5834\u5408\u306f\u3001\u30dc\u30c3\u30c8\u3084\u30e6\u30fc\u30b6\u30fc\u304c\u4f55\u5ea6\u3082\u554f\u3044\u5408\u308f\u305b\u3092\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u9069\u5ea6\u306a\u66f4\u65b0\u9593\u9694\uff08\u6570\u5206\u304b\u3089\u6570\u6642\u9593\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3044\u306d\u3002\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u983b\u7e41\u306b\u5909\u308f\u308b\u5834\u5408\u306f\u3001404\u306f\u77ed\u3081\u306b\u8a2d\u5b9a\u3059\u308b\u3088\u3002. <strong>5xx<\/strong>-\u79c1\u306f\u57fa\u672c\u7684\u306b\u30a8\u30e9\u30fc\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u305b\u305a\u3001stale-if-error \u3092\u4f7f\u7528\u3057\u3066\u3001\u6a5f\u80fd\u3059\u308b\u30b3\u30d4\u30fc\u3092\u4e00\u6642\u7684\u306b\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u5b89\u5b9a\u6027\u304c\u7dad\u6301\u3055\u308c\u3001\u983b\u7e41\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3055\u308c\u308b\u3082\u306e\u306e\u3001\u5b58\u5728\u3057\u306a\u3044\u30d1\u30b9\u306b\u5bfe\u3059\u308b\u518d\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u691c\u8a3c\u3092\u6b63\u3057\u304f\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\uff1aETag \u304a\u3088\u3073 Last-Modified<\/h2>\n\n<p>\u3068\u4e00\u7dd2\u306b <strong>\u30a4\u30fc\u30bf\u30b0<\/strong> \u305d\u3057\u3066\u3001Last-Modified \u306b\u3088\u308a\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u30ea\u30bd\u30fc\u30b9\u3092\u5b9f\u969b\u306b\u518d\u8aad\u307f\u8fbc\u307f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f If-None-Match \u307e\u305f\u306f If-Modified-Since \u3092\u9001\u4fe1\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u7406\u60f3\u7684\u306b\u306f 200 \u3067\u306f\u306a\u304f 304 \u3067\u5fdc\u7b54\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8ee2\u9001\u91cf\u3092\u7bc0\u7d04\u3057\u3001 <strong>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/strong> \u660e\u78ba\u3067\u3059\u3002\u9759\u7684\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001Last-Modified \u3067\u5341\u5206\u3067\u3059\u304c\u3001\u52d5\u7684\u306b\u751f\u6210\u3055\u308c\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u5834\u5408\u306f\u3001ETag \u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u91cd\u8981\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u30d2\u30c3\u30c8\u3092\u8a8d\u8b58\u3067\u304d\u308b\u3088\u3046\u306b\u3001ETag \u3092\u4e00\u8cab\u3057\u3066\u751f\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n<p>\u79c1\u306f\u691c\u8a3c\u3092\u4ee5\u4e0b\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u306e\u304c\u597d\u304d\u3067\u3059\u3002 <strong>stale<\/strong>-\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3002stale-while-revalidate \u306f\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u66f4\u65b0\u3092\u884c\u3044\u306a\u304c\u3089\u3001\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u3092\u9ad8\u901f\u306b\u4fdd\u3061\u307e\u3059\u3002stale-if-error \u306f\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u3001\u969c\u5bb3\u8010\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u5b89\u5b9a\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u8ca0\u62c5\u3082\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b9\u30cb\u30da\u30c3\u30c8\u306f\u3001\u79c1\u304c\u4f7f\u7528\u3057\u3066\u3044\u308b\u5178\u578b\u7684\u306a\u8a2d\u5b9a\u3067\u3059\u3002.<\/p>\n\n<pre><code>Header set Cache-Control \"public, max-age=31536000, immutable\"\n \/etc\/nginx\/conf.d\/caching.conf location ~* .(css|js|png|jpg|svg|woff2)$ { add_header Cache-Control \"public, max-age=31536000, immutable\"; }\n<\/code><\/pre>\n\n<h2>\u4e0a\u7d1a\u8005\u5411\u3051\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3068\u8a73\u7d30<\/h2>\n\n<p>max-age \u306e\u307b\u304b\u306b\u3001\u79c1\u306f\u610f\u56f3\u7684\u306b <strong>S\u30de\u30af\u30b5\u30fc\u30b8\u30e5<\/strong>, \u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30d6\u30e9\u30a6\u30b6\u3088\u308a\u3082\u9577\u304f\u4fdd\u6301\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001CDN \u306f 1 \u6642\u9593\u4fdd\u6301\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f 5 \u5206\u5f8c\u306b\u518d\u691c\u8a3c\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002. <strong>\u518d\u691c\u8a3c\u304c\u5fc5\u8981<\/strong> \u30d6\u30e9\u30a6\u30b6\u306b\u3001\u4f7f\u7528\u524d\u306b\u671f\u9650\u5207\u308c\u306e\u30b3\u30d4\u30fc\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u5f37\u5236\u3057\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u5206\u91ce\u3067\u306f\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3059\u3002. <strong>\u30d7\u30ed\u30ad\u30b7\u518d\u691c\u8a3c<\/strong> \u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u7fa9\u52d9\u3092\u8ab2\u3057\u307e\u3059\u3002 <strong>no-transform<\/strong> \u30d7\u30ed\u30ad\u30b7\u304c\u753b\u50cf\u3084\u5727\u7e2e\u3092\u7121\u65ad\u3067\u5909\u66f4\u3059\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002\u5e45\u5e83\u3044\u4e92\u63db\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u306b\u52a0\u3048\u3066\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3067 <strong>\u671f\u9650\u5207\u308c<\/strong>-\u5c06\u6765\uff08\u30a2\u30bb\u30c3\u30c8\uff09\u307e\u305f\u306f\u904e\u53bb\uff08HTML\uff09\u306e\u65e5\u4ed8\u3002\u305f\u3060\u3057\u3001\u6700\u65b0\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u4e3b\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3092\u9806\u5b88\u3057\u307e\u3059\u3002CDN \u6226\u7565\u3067\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u30eb\u30fc\u30eb\u3068\u30a8\u30c3\u30b8\u30eb\u30fc\u30eb\u3092\u5206\u96e2\u3057\u3066\u3044\u307e\u3059\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u306f public + max-age\u3001\u30a8\u30c3\u30b8\u306b\u306f s-maxage\/Surrogate-Control \u3092\u9069\u7528\u3057\u307e\u3059\u3002\u3053\u306e\u5206\u96e2\u306b\u3088\u308a\u3001\u30a8\u30f3\u30c9\u30c7\u30d0\u30a4\u30b9\u3067\u306e\u30b9\u30c6\u30fc\u30eb\u30ea\u30b9\u30af\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u3001HIT \u7387\u3092\u6700\u5927\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\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\/2026\/01\/http-cache-header-fehler-3017.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>CDN \u304a\u3088\u3073\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u306e\u9023\u643a<\/h2>\n\n<p>CDN \u306f\u4ee5\u4e0b\u3092\u5c0a\u91cd\u3057\u307e\u3059\u3002 <strong>Origin\u30d8\u30c3\u30c0\u30fc<\/strong> \u2013 \u8aa4\u3063\u305f\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u306f\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7121\u52b9\u306b\u3057\u307e\u3059\u3002\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3064\u3044\u3066\u306f\u3001public \u304a\u3088\u3073\u5fc5\u8981\u306b\u5fdc\u3058\u3066 s-maxage \u3092\u8a2d\u5b9a\u3057\u3001\u30a8\u30c3\u30b8\u304c\u30d6\u30e9\u30a6\u30b6\u3088\u308a\u3082\u9577\u304f\u4fdd\u6301\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002Surrogate-Control \u306f\u3001\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u8ffd\u52a0\u306e\u30eb\u30fc\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002no-cache \u304c\u30aa\u30ea\u30b8\u30f3\u306b\u5230\u9054\u3059\u308b\u3068\u3001CDN \u306f\u8981\u6c42\u3092\u62d2\u5426\u3057\u307e\u3059\u3002 <strong>\u30b9\u30c8\u30ec\u30fc\u30b8<\/strong>. \u305d\u306e\u305f\u3081\u3001\u79c1\u306f\u30d6\u30e9\u30a6\u30b6\u3068CDN\u306e\u6226\u7565\u3092\u610f\u56f3\u7684\u306b\u8abf\u6574\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<p>\u65b0\u3057\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u4e8b\u524d\u30ed\u30fc\u30c9\u6226\u7565\u3082\u691c\u8a0e\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/http3%e3%83%97%e3%83%83%e3%82%b7%e3%83%a5%e3%83%97%e3%83%aa%e3%83%ad%e3%83%bc%e3%83%89%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e6%9c%80%e9%81%a9%e5%8c%96%e3%82%a6%e3%82%a7\/\">HTTP\/3 \u30d7\u30c3\u30b7\u30e5\uff06\u30d7\u30ea\u30ed\u30fc\u30c9<\/a> \u91cd\u8981\u306a\u30a2\u30bb\u30c3\u30c8\u3092\u65e9\u671f\u306b\u30ed\u30fc\u30c9\u3057\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u30d6\u30ed\u30c3\u30af\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002\u3053\u306e\u624b\u6cd5\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u305d\u308c\u3092\u88dc\u5b8c\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u30a2\u30bb\u30c3\u30c8\u306e TTL \u3092\u9577\u304f\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u8d77\u52d5\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30e9\u30f3\u30af\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002 <strong>\u30b5\u30fc\u30d0\u30fc<\/strong> \u307e\u3063\u305f\u304f\u6c57\u3092\u304b\u304f\u3053\u3068\u304c\u306a\u3044\u3002.<\/p>\n\n<h2>Vary\u6226\u7565\u306e\u8a73\u7d30<\/h2>\n\n<p><strong>\u53ef\u5909<\/strong> \u3069\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30d8\u30c3\u30c0\u30fc\u304c\u65b0\u3057\u3044\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3092\u751f\u6210\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u79c1\u306f Vary \u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3066\u3044\u307e\u3059\u3002HTML \u306e\u5834\u5408\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408 Accept-Encoding\uff08\u5727\u7e2e\uff09\u3068\u8a00\u8a9e\uff08\u5fc5\u8981\u306a\u5834\u5408\uff09\u3001\u30a2\u30bb\u30c3\u30c8\u306e\u5834\u5408\u306f\u7406\u60f3\u7684\u306b\u306f\u307e\u3063\u305f\u304f\u4f7f\u7528\u3057\u307e\u305b\u3093\u3002Vary \u304c\u5e83\u3059\u304e\u308b\uff08\u4f8b\uff1a\u30e6\u30fc\u30b6\u30fc\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\uff09\u3068\u3001HIT \u7387\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u540c\u6642\u306b\u3001 <strong>\u30bf\u30b0<\/strong> \u305d\u306e <em>\u8868\u73fe\u56fa\u6709\u306e<\/em> \u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3092\u53cd\u6620\u3059\u308b\uff1agzip \u307e\u305f\u306f br \u3092\u914d\u4fe1\u3059\u308b\u5834\u5408\u3001\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b ETag \u304c\u9069\u7528\u3055\u308c\u3001Vary: Accept-Encoding \u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u5f31\u3044 ETag (W\/) \u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u4e00\u8cab\u3057\u3066\u751f\u6210\u3059\u308b\u3088\u3046\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u3046\u3057\u306a\u3044\u3068\u3001\u4e0d\u8981\u306a 200 \u304c\u767a\u751f\u3057\u307e\u3059\u3002\u30d5\u30a9\u30f3\u30c8\u3084\u753b\u50cf\u306f\u3001\u901a\u5e38\u3001Vary \u3092\u4f7f\u7528\u305b\u305a\u306b\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30ad\u30fc\u306f\u5b89\u5b9a\u3057\u307e\u3059\u3002 \u79c1\u306e\u539f\u5247\uff1a\u307e\u305a\u3001\u6280\u8853\u7684\u306b\u5fc5\u8981\u306a\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u306e\u5f8c\u306b Vary \u3092\u62e1\u5f35\u3059\u308b\u3002\u6c7a\u3057\u3066\u305d\u306e\u9006\u3092\u884c\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/httpcacheoffice0983.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>DevTools \u3067\u306e\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3068\u8a3a\u65ad<\/h2>\n\n<p>\u79c1\u306f\u3044\u3064\u3082 <strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30bf\u30d6<\/strong> \u30d6\u30e9\u30a6\u30b6\u30c4\u30fc\u30eb\u3002\u305d\u3053\u3067\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u306e\u5fdc\u7b54\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3001\u305d\u306e\u5fdc\u7b54\u304c\u3044\u3064\u306e\u3082\u306e\u304b\u3001\u3069\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u304c\u6709\u52b9\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002Age\u3001Cache-Control\u3001Status \u306e\u5404\u5217\u306f\u3001\u8fc5\u901f\u306a\u30c1\u30a7\u30c3\u30af\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002HIT \u7387\u304c 50% \u672a\u6e80\u306e\u5834\u5408\u306f\u5bfe\u5fdc\u304c\u5fc5\u8981\u3067\u3042\u308a\u300180% \u4ee5\u4e0a\u306e\u76ee\u6a19\u5024\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002\u7570\u5e38\u5024\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u307e\u305a\u95a2\u9023\u3059\u308b\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002.<\/p>\n\n<p>PageSpeed \u3084 GTmetrix \u306a\u3069\u306e\u30c4\u30fc\u30eb\u306f\u3001\u79c1\u306e\u30ed\u30fc\u30ab\u30eb\u3067\u306e <strong>\u8a08\u6e2c<\/strong>. \u5909\u66f4\u524d\u3068\u5909\u66f4\u5f8c\u3092\u6bd4\u8f03\u3057\u3066\u3001\u305d\u306e\u52b9\u679c\u3092\u6570\u5024\u5316\u3057\u307e\u3059\u3002\u8ee2\u9001\u91cf\u304c\u591a\u3044\u5834\u5408\u306f\u3001\u6700\u65b0\u306e\u5727\u7e2e\u6280\u8853\u3092\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u3055\u3089\u306b\u6570\u30df\u30ea\u79d2\u306e\u6642\u9593\u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u3059\u3079\u3066\u306e\u8abf\u6574\u3092\u53b3\u5bc6\u306b\u691c\u8a3c\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u6570\u5b57<\/strong>.<\/p>\n\n<h2>\u81ea\u52d5\u30c1\u30a7\u30c3\u30af\u3068CI<\/h2>\n\n<p>\u30eb\u30fc\u30eb\u304c\u640d\u306a\u308f\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u30d8\u30c3\u30c0\u30fc\u30c1\u30a7\u30c3\u30af\u3092CI\u306b\u7d44\u307f\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002\u30d1\u30b9\u3054\u3068\u306b\u76ee\u6a19\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u5404\u30d3\u30eb\u30c9\u3067\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u306b\u5bfe\u3057\u3066\u30e9\u30f3\u30c0\u30e0\u306b\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306e\u5834\u5408\u3001\u5358\u7d14\u306a\u30b7\u30a7\u30eb\u30c1\u30a7\u30c3\u30af\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n\n<pre><code># \u4f8b\uff1a\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u305f\u30a2\u30bb\u30c3\u30c8\u306b\u5bfe\u3059\u308b\u671f\u5f85\u3055\u308c\u308b\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6 curl -sI https:\/\/example.org\/static\/app.abc123.js | grep -i \"cache-control\" # HTML \u306b\u5bfe\u3059\u308b\u671f\u5f85\u3055\u308c\u308b\u77ed\u671f\u9593\u304a\u3088\u3073\u518d\u691c\u8a3c\ncurl -sI https:\/\/example.org\/ | egrep -i \"cache-control|etag|last-modified\" # \u30a8\u30fc\u30b8\u30d8\u30c3\u30c0\u30fc\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u30b9\u30c6\u30fc\u30bf\u30b9\uff08\u5b58\u5728\u3059\u308b\u5834\u5408\uff09\u3092\u691c\u67fb curl -sI https:\/\/example.org\/styles.css | egrep -i \"age|cache-status|x-cache\"\n<\/code><\/pre>\n\n<p>\u5408\u6210\u30c6\u30b9\u30c8\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u5b9a\u671f\u7684\u306a\u300c\u30d8\u30c3\u30c0\u30fc\u76e3\u67fb\u300d\u3092\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u5f97\u3089\u308c\u305f\u77e5\u898b\u306f\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u30b3\u30fc\u30c9\u306b\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001 <strong>\u30dd\u30ea\u30b7\u30fc<\/strong> \u5b89\u5b9a\u6027 \u2013 CMS\u3001CDN\u3001\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u3092\u6700\u5f8c\u306b\u5909\u66f4\u3057\u305f\u4eba\u7269\u306b\u95a2\u4fc2\u306a\u304f\u3002.<\/p>\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u6700\u9069\u5316\uff1a\u30da\u30fc\u30b8\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30aa\u30da\u30b3\u30fc\u30c9\u306e\u30ad\u30e3\u30c3\u30b7\u30e5<\/h2>\n\n<p>\u30d6\u30e9\u30a6\u30b6\u3068CDN\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u52a0\u3048\u3066\u3001\u79c1\u306f\u4ee5\u4e0b\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30b5\u30fc\u30d0\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>. \u30da\u30fc\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u5b8c\u6210\u3057\u305fHTML\u30da\u30fc\u30b8\u3092\u63d0\u4f9b\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7d50\u679c\u3092\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3057\u3001OPcache\u306fPHP\u30d0\u30a4\u30c8\u30b3\u30fc\u30c9\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u30d8\u30c3\u30c0\u30fc\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u3053\u308c\u3089\u306e\u30ec\u30a4\u30e4\u30fc\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u8ca0\u8377\u3092\u5927\u5e45\u306b\u8efd\u6e1b\u3057\u307e\u3059\u3002\u9ad8\u901f\u306a\u30a8\u30c3\u30b8\u3001\u5065\u5168\u306aTTL\u3001\u30b5\u30fc\u30d0\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u3063\u3066\u521d\u3081\u3066\u3001\u771f\u306e\u30d4\u30fc\u30af\u5024\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u305f\u3068\u3048 <strong>\u30c8\u30e9\u30d5\u30a3\u30c3\u30af<\/strong> \u304c\u5897\u3048\u308b\u3002<\/p>\n\n<p>\u4ee5\u4e0b\u306e\u5e02\u5834\u6982\u8981\u306f\u3001\u79c1\u304c\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u91cd\u8996\u3059\u308b\u70b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u9ad8\u3044\u30d2\u30c3\u30c8\u7387\u3001Redis \u306e\u53ef\u7528\u6027\u3001\u305d\u3057\u3066\u624b\u9803\u306a\u4fa1\u683c\u304c\u9078\u629e\u306e\u6c7a\u3081\u624b\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc<\/th>\n      <th>PageSpeed \u30b9\u30b3\u30a2<\/th>\n      <th>Redis\u306e\u30b5\u30dd\u30fc\u30c8<\/th>\n      <th>\u4fa1\u683c\uff08\u30b9\u30bf\u30fc\u30bf\u30fc\uff09<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>webhoster.de<\/td>\n      <td>98\/100<\/td>\n      <td>\u566b<\/td>\n      <td>4,99 \u20ac<\/td>\n    <\/tr>\n    <tr>\n      <td>\u305d\u306e\u4ed61<\/td>\n      <td>92\/100<\/td>\n      <td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n      <td>6,99 \u20ac<\/td>\n    <\/tr>\n    <tr>\n      <td>\u305d\u306e\u4ed62<\/td>\n      <td>89\/100<\/td>\n      <td>\u3044\u3044\u3048<\/td>\n      <td>5,99 \u20ac<\/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\/2026\/01\/entwickler_httpcache_7291.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u7121\u52b9\u5316\u3068\u30d1\u30fc\u30b8\u6226\u7565<\/h2>\n\n<p>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u69cb\u7bc9\u306f\u3001\u305d\u306e\u534a\u5206\u306b\u3059\u304e\u306a\u3044\u3002 <strong>\u7121\u52b9\u5316<\/strong> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u4fca\u654f\u6027\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30a2\u30bb\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30cf\u30c3\u30b7\u30e5\u3067\u5909\u66f4\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u3001\u30d1\u30fc\u30b8\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002HTML \u304a\u3088\u3073 API \u306b\u3064\u3044\u3066\u306f\u3001\u30c7\u30d7\u30ed\u30a4\u5f8c\uff08\u91cd\u8981\u306a\u30eb\u30fc\u30c8\uff09\u3001\u516c\u958b\u5f8c\uff08\u5f71\u97ff\u306e\u3042\u308b\u30da\u30fc\u30b8\u306e\u307f\uff09\u3001\u307e\u305f\u306f\u6a5f\u80fd\u30d5\u30e9\u30b0\u5f8c\u306b\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f\u30d1\u30fc\u30b8\u3092\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3064\u3044\u3066\u306f\u3001\u30bf\u30b0\/\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u5168\u4f53\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002 <em>\u30b0\u30eb\u30fc\u30d7<\/em> \u30d1\u30b9\u3092\u500b\u5225\u306b\u51e6\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u7a7a\u306b\u3059\u308b\u3002\u53ef\u80fd\u306a\u5834\u5408\u306f\u3001\u300c\u30bd\u30d5\u30c8\u30d1\u30fc\u30b8\u300d\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30f3\u30c4\u306f\u3059\u3050\u306b\u300c\u53e4\u3044\u300d\u3068\u30de\u30fc\u30af\u3055\u308c\u3001\u6b21\u56de\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u6642\u306b\u518d\u691c\u8a3c\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u540c\u6642\u518d\u53d6\u5f97\u306b\u3088\u308b\u8ca0\u8377\u306e\u30d4\u30fc\u30af\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u6574\u7406\u3055\u308c\u305f\u30de\u30c3\u30d4\u30f3\u30b0\u3067\u3059\u3002\u3069\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u3069\u306e\u30d1\u30fc\u30b8\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u306e\u304b\uff1f\u3053\u306e\u30ed\u30b8\u30c3\u30af\u306f\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30c7\u30fc\u30bf\u4fdd\u8b77\uff1a\u516c\u5171\u3068\u6c11\u9593<\/h2>\n\n<p>\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3055\u308c\u305f\u30da\u30fc\u30b8\u306f\u3001 <strong>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong> \u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u3001\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u306f\u4fdd\u5b58\u3055\u308c\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u3088\u3046\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u306f private\u3001max-age=0 \u307e\u305f\u306f no-cache \u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u516c\u958b HTML \u30da\u30fc\u30b8\u306f\u3001\u77ed\u3044\u6709\u52b9\u671f\u9593\u3067 public \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u5185\u306e\u30af\u30c3\u30ad\u30fc\u306b\u6ce8\u610f\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306f\u660e\u78ba\u306b\u5206\u96e2\u3055\u308c\u305f\u307e\u307e\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5916\u90e8\u30e6\u30fc\u30b6\u30fc\u304c\u610f\u56f3\u305b\u305a\u306b <strong>\u30c7\u30fc\u30bf<\/strong> \u4ed6\u306e\u4eba\u3092\u898b\u308b\u3002.<\/p>\n\n<p>\u540c\u6642\u306b\u3001\u652f\u6255\u3044\u3084\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u5206\u91ce\u3067\u306f\u53b3\u3057\u3044\u30eb\u30fc\u30eb\u3092\u9069\u7528\u3057\u3066\u3044\u307e\u3059\u3002no-store \u306f\u3001\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u56de\u7b54\u304c\u4fdd\u5b58\u3055\u308c\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002\u30b5\u30a4\u30c8\u306e\u305d\u306e\u4ed6\u306e\u90e8\u5206\u306b\u3064\u3044\u3066\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u3001\u5bdb\u5927\u306a\u8a2d\u5b9a\u3092\u7dad\u6301\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u660e\u78ba\u306a\u5206\u96e2\u306b\u3088\u308a\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u9ad8\u901f\u304b\u3064\u5b89\u5168\u306b\u4fdd\u305f\u308c\u3066\u3044\u307e\u3059\u3002\u79c1\u306f\u3001 <strong>\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb<\/strong>, \u95a2\u4fc2\u8005\u5168\u54e1\u304c\u4e00\u8cab\u6027\u3092\u4fdd\u3066\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002.<\/p>\n\n<h2>\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u30fb\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0\u306b\u3064\u3044\u3066\u7406\u89e3\u3059\u308b<\/h2>\n\n<p>\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u3068\u6709\u52b9\u671f\u9650\u304c\u306a\u3044\u5834\u5408\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u4ee5\u4e0b\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002 <strong>\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af<\/strong> \u623b\u308b \u2013 \u30e9\u30b9\u30c8\u5909\u66f4\u304b\u3089\u306e\u6642\u9593\u306e\u5272\u5408\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u518d\u73fe\u6027\u306e\u4f4e\u3044\u7d50\u679c\u3084\u66f4\u65b0\u306e\u3070\u3089\u3064\u304d\u304c\u751f\u3058\u307e\u3059\u3002 \u79c1\u306f\u3001\u95a2\u9023\u3059\u308b\u3059\u3079\u3066\u306e\u30eb\u30fc\u30c8\u306b\u660e\u793a\u7684\u306b Cache-Control 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