{"id":1103,"date":"2026-10-22T23:00:00","date_gmt":"2026-10-22T14:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1103"},"modified":"2026-10-22T13:53:31","modified_gmt":"2026-10-22T04:53:31","slug":"qs-http-vary-cache-key-selection-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1103","title":{"rendered":"HTTP\u306eVary\u3001\u540c\u3058URL\u306e\u5fdc\u7b54\u3092\u53d6\u308a\u9055\u3048\u306a\u3044\u305f\u3081\u306e\u7167\u5408\u6761\u4ef6"},"content":{"rendered":"<p>\u540c\u3058URL\u3078\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3082\u3001\u65e5\u672c\u8a9e\u306e\u672c\u6587\u3068\u82f1\u8a9e\u306e\u672c\u6587\u3001\u5727\u7e2e\u3057\u305f\u672c\u6587\u3068\u5727\u7e2e\u3057\u3066\u3044\u306a\u3044\u672c\u6587\u304c\u8fd4\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304cURL\u3060\u3051\u3092\u624b\u304c\u304b\u308a\u306b\u4ee5\u524d\u306e\u5fdc\u7b54\u3092\u4f7f\u3046\u3068\u3001\u5225\u306e\u6761\u4ef6\u3067\u9078\u3070\u308c\u305f\u5185\u5bb9\u3092\u6e21\u3057\u3066\u3057\u307e\u3044\u304b\u306d\u307e\u305b\u3093\u3002HTTP\u306eVary\u306f\u3001\u5fdc\u7b54\u3092\u9078\u3076\u969b\u306b\u3069\u306e\u8981\u6c42\u30d8\u30c3\u30c0\u30fc\u304c\u95a2\u4fc2\u3057\u305f\u304b\u3092\u4f1d\u3048\u3001\u4fdd\u5b58\u3057\u305f\u5fdc\u7b54\u3092\u6b21\u306e\u8981\u6c42\u3078\u4f7f\u3048\u308b\u304b\u5224\u65ad\u3059\u308b\u305f\u3081\u306e\u60c5\u5831\u3067\u3059\u3002[1][2]<\/p>\n<section class=\"influvetor-quick-summary\" aria-label=\"\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f\" style=\"border-left:4px solid #8ea9a2;padding:1em 1.2em;background:#f5f7f5;margin:1.5em 0\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>Vary\u306f\u5fdc\u7b54\u5074\u306e\u30d8\u30c3\u30c0\u30fc\u3067\u3059\u3002\u305d\u3053\u306b\u5217\u6319\u3059\u308b\u306e\u306f\u3001\u5fdc\u7b54\u306e\u9078\u629e\u306b\u95a2\u4fc2\u3059\u308b\u8981\u6c42\u5074\u306e\u30d8\u30c3\u30c0\u30fc\u540d\u3067\u3059\u3002<\/li>\n<li>Vary\u3067\u6307\u5b9a\u3055\u308c\u305f\u8981\u6c42\u6761\u4ef6\u304c\u5408\u308f\u306a\u3051\u308c\u3070\u3001\u4fdd\u5b58\u6e08\u307f\u5fdc\u7b54\u3092\u305d\u306e\u307e\u307e\u518d\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u65b0\u9bae\u3055\u3084\u4fdd\u5b58\u8a31\u53ef\u3068\u306f\u5225\u306e\u78ba\u8a8d\u3067\u3059\u3002<\/li>\n<li>\u5fc5\u8981\u306a\u6761\u4ef6\u3092\u7701\u304f\u3068\u5225\u306e\u8868\u73fe\u3092\u8fd4\u3059\u539f\u56e0\u306b\u306a\u308a\u3001\u4e0d\u8981\u306a\u6761\u4ef6\u3092\u5897\u3084\u3059\u3068\u518d\u5229\u7528\u306e\u6a5f\u4f1a\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002<\/li>\n<li>Vary\u306f\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3084\u79d8\u5bc6\u4fdd\u6301\u306e\u8a2d\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8a8d\u8a3c\u3001\u5171\u6709\u4fdd\u5b58\u306e\u53ef\u5426\u3001\u8868\u73fe\u306e\u9078\u629e\u6761\u4ef6\u3092\u5206\u3051\u3066\u70b9\u691c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u5fdc\u7b54\u306b\u66f8\u304f\u306e\u306f\u3001\u8981\u6c42\u5074\u306e\u6761\u4ef6\u306e\u540d\u524d<\/h2>\n<p>\u305f\u3068\u3048\u3070\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u8981\u6c42\u306e<code>Accept-Language<\/code>\u3092\u898b\u3066\u8a00\u8a9e\u3092\u9078\u3073\u3001<code>Accept-Encoding<\/code>\u3092\u898b\u3066\u5727\u7e2e\u5f62\u5f0f\u3092\u9078\u3093\u3060\u3068\u3057\u307e\u3059\u3002\u5fdc\u7b54\u306b <code>Vary: Accept-Language, Accept-Encoding<\/code> \u3092\u4ed8\u3051\u308b\u3068\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u305d\u306e\u4e8c\u3064\u306e\u8981\u6c42\u30d8\u30c3\u30c0\u30fc\u3082\u7167\u5408\u306b\u4f7f\u3044\u307e\u3059\u3002Vary\u3078\u300c\u65e5\u672c\u8a9e\u300d\u3084\u300cgzip\u300d\u3068\u3044\u3046\u9078\u629e\u7d50\u679c\u3092\u66f8\u304f\u306e\u3067\u306f\u306a\u304f\u3001\u9078\u629e\u306b\u95a2\u4fc2\u3057\u305f\u6b04\u306e\u540d\u524d\u3092\u66f8\u304f\u70b9\u304c\u5927\u5207\u3067\u3059\u3002[1\u300112.5.5\u7bc0]<\/p>\n<p>\u3053\u3053\u3067\u306e<strong>\u8868\u73fe<\/strong>\u306f\u3001\u540c\u3058\u5bfe\u8c61\u3092\u5229\u7528\u8005\u3078\u6e21\u3059\u969b\u306e\u5177\u4f53\u7684\u306a\u5f62\u3067\u3059\u3002\u6848\u5185\u30da\u30fc\u30b8\u3068\u3044\u3046\u5bfe\u8c61\u306f\u540c\u3058\u3067\u3082\u3001\u8a00\u8a9e\u3084\u7b26\u53f7\u5316\u304c\u9055\u3048\u3070\u3001\u9001\u308b\u30d0\u30a4\u30c8\u5217\u3084\u5fdc\u7b54\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u306f\u9055\u3044\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u3068\u306f\u3001\u4fdd\u5b58\u3057\u305f\u5fdc\u7b54\u3068\u65b0\u3057\u3044\u8981\u6c42\u3092\u5bfe\u5fdc\u3065\u3051\u308b\u305f\u3081\u306e\u624b\u304c\u304b\u308a\u3067\u3059\u3002Vary\u306f\u3001\u305d\u306e\u7167\u5408\u6761\u4ef6\u3092\u8981\u6c42\u30e1\u30bd\u30c3\u30c9\u3068\u5bfe\u8c61URI\u4ee5\u5916\u306b\u3082\u5e83\u3052\u307e\u3059\u3002<\/p>\n<p>\u4fdd\u5b58\u6e08\u307f\u5fdc\u7b54\u306bVary\u304c\u3042\u308b\u5834\u5408\u3001\u5217\u6319\u3055\u308c\u305f\u8981\u6c42\u30d8\u30c3\u30c0\u30fc\u304c\u3001\u4fdd\u5b58\u306e\u304d\u3063\u304b\u3051\u306b\u306a\u3063\u305f\u8981\u6c42\u3068\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u3001\u518d\u691c\u8a3c\u306a\u3057\u3067\u305d\u306e\u5fdc\u7b54\u3092\u4f7f\u3063\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u4e00\u81f4\u3059\u308b\u4fdd\u5b58\u5fdc\u7b54\u304c\u306a\u3051\u308c\u3070\u3001\u901a\u5e38\u306f\u8981\u6c42\u3092\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3078\u8ee2\u9001\u3057\u307e\u3059\u3002\u4fdd\u5b58\u6e08\u307f\u306e\u8868\u73fe\u3092\u793a\u3059\u6761\u4ef6\u3092\u4ed8\u3051\u3066\u554f\u3044\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002[2\u30014.1\u7bc0]<\/p>\n<h2>\u516b\u56de\u306e\u8981\u6c42\u3067\u3001\u6761\u4ef6\u306e\u4e0d\u8db3\u3068\u5897\u3084\u3057\u3059\u304e\u3092\u6bd4\u3079\u308b<\/h2>\n<p>\u5c0f\u3055\u306a\u72ec\u81ea\u30e2\u30c7\u30eb\u3067\u9055\u3044\u3092\u898b\u307e\u3059\u3002\u540c\u3058<code>GET \/guide<\/code>\u306b\u3001\u65e5\u672c\u8a9e\u30fb\u82f1\u8a9e\u3068\u3001gzip\u30fbidentity\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u56db\u7a2e\u985e\u306e\u8981\u6c42\u3092\u9806\u306b\u9001\u308a\u3001\u305d\u306e\u4e26\u3073\u3092\u3082\u3046\u4e00\u5ea6\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002identity\u306f\u3053\u306e\u4f8b\u3067\u306f\u5727\u7e2e\u3057\u306a\u3044\u8868\u73fe\u3092\u9078\u3076\u6307\u5b9a\u3067\u3059\u3002\u8981\u6c42\u306e\u8a00\u8a9e\u6b04\u306f\u5358\u7d14\u306a<code>ja<\/code>\u304b<code>en<\/code>\u3060\u3051\u3001\u5727\u7e2e\u6b04\u3082\u5358\u72ec\u306e\u5024\u3068\u3057\u3001\u512a\u5148\u5ea6\u3084\u8907\u6570\u5019\u88dc\u306f\u6271\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u6700\u521d\u306f\u7a7a\u3067\u3001\u5fdc\u7b54\u306f\u3059\u3079\u3066\u4fdd\u5b58\u53ef\u80fd\u304b\u3064\u65b0\u9bae\u3001\u9014\u4e2d\u3067\u5185\u5bb9\u306f\u5909\u308f\u3089\u305a\u3001\u8ffd\u3044\u51fa\u3057\u3082\u306a\u3044\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u8fd4\u3059\u8868\u73fe\u3092\u300c\u8a00\u8a9e\u3068\u5727\u7e2e\u5f62\u5f0f\u306e\u7d44\u300d\u3068\u3057\u3066\u8868\u3057\u3001\u8981\u6c42\u304c\u671f\u5f85\u3059\u308b\u7d44\u3068\u3001\u5b9f\u969b\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u7d44\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u30ad\u30fc\u8a2d\u8a08\u3092\u7406\u89e3\u3059\u308b\u8a08\u7b97\u3067\u3042\u308a\u3001\u5b9f\u30d6\u30e9\u30a6\u30b6\u30fc\u3084\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306e\u6027\u80fd\u6e2c\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><strong>Vary\u3092\u7701\u3044\u305f\u5834\u5408<\/strong>\u306f\u3001\u30e2\u30c7\u30eb\u304c\u6700\u521d\u306e\u65e5\u672c\u8a9e\u30fbgzip\u306e\u5fdc\u7b54\u3092\u4e00\u3064\u3060\u3051\u4fdd\u5b58\u3057\u307e\u3059\u3002\u6b21\u306e\u4e03\u56de\u306f\u3059\u3079\u3066\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u3067\u3059\u304c\u3001\u540c\u3058\u6761\u4ef6\u304c\u518d\u3073\u6765\u308b\u4e00\u56de\u3092\u9664\u304d\u3001\u516d\u56de\u306f\u8981\u6c42\u3068\u9055\u3046\u7d44\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u300c\u30d2\u30c3\u30c8\u7387\u304c\u9ad8\u3044\u300d\u3060\u3051\u3067\u306f\u3001\u6b63\u3057\u304f\u914d\u308c\u305f\u3068\u306f\u5224\u65ad\u3067\u304d\u306a\u3044\u4f8b\u3067\u3059\u3002<\/p>\n<p><strong>\u8a00\u8a9e\u3068\u5727\u7e2e\u5f62\u5f0f\u3092\u7167\u5408\u3059\u308b\u5834\u5408<\/strong>\u306f\u3001\u6700\u521d\u306e\u56db\u56de\u3067\u56db\u7a2e\u985e\u306e\u5fdc\u7b54\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u4e8c\u5de1\u76ee\u306f\u305d\u308c\u305e\u308c\u306e\u4fdd\u5b58\u5fdc\u7b54\u3092\u4f7f\u3048\u308b\u305f\u3081\u3001\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u8981\u6c42\u306f\u56db\u56de\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u3082\u56db\u56de\u3067\u3059\u3002\u516b\u56de\u3068\u3082\u671f\u5f85\u3059\u308b\u7d44\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u3055\u3089\u306b\u6bce\u56de\u7570\u306a\u308b\u8b58\u5225\u5b50\u307e\u3067Vary\u306b\u52a0\u3048\u308b\u5834\u5408<\/strong>\u306f\u3001\u516b\u56de\u3068\u3082\u5225\u306e\u30ad\u30fc\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u4f8b\u306e<code>X-Debug-Id<\/code>\u306f\u3001\u8981\u6c42\u3054\u3068\u306b\u9055\u3046\u6587\u5b57\u5217\u3092\u4ed8\u3051\u308b\u67b6\u7a7a\u306e\u8a3a\u65ad\u7528\u30d8\u30c3\u30c0\u30fc\u3067\u3001\u672c\u6587\u306e\u9078\u629e\u306b\u306f\u4f7f\u3044\u307e\u305b\u3093\u3002\u305d\u308c\u3067\u3082Vary\u3067\u6307\u5b9a\u3059\u308b\u3068\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u524d\u306e\u5fdc\u7b54\u3068\u4e00\u81f4\u3057\u306a\u304f\u306a\u308a\u3001\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3078\u516b\u56de\u8981\u6c42\u3057\u3066\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u306f\u30bc\u30ed\u3067\u3059\u3002\u8868\u73fe\u306f\u6b63\u3057\u304f\u3066\u3082\u3001\u4e0d\u8981\u306a\u6761\u4ef6\u304c\u518d\u5229\u7528\u3092\u59a8\u3052\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-http-vary-cache-key-selection-20261022-figure-c7b7202990f5.png\" alt=\"\u516b\u8981\u6c42\u306e\u72ec\u81ea\u30e2\u30c7\u30eb\u3002Vary\u306a\u3057\u306f\u53d6\u5f971\u56de\u30fb\u30d2\u30c3\u30c87\u56de\u30fb\u8aa4\u3063\u305f\u8868\u73fe6\u56de\u3002\u8a00\u8a9e\u3068\u5727\u7e2e\u5f62\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u3068\u53d6\u5f974\u56de\u30fb\u30d2\u30c3\u30c84\u56de\u30fb\u8aa4\u308a0\u56de\u3002\u6bce\u56de\u9055\u3046\u8a3a\u65adID\u3082\u52a0\u3048\u308b\u3068\u53d6\u5f978\u56de\u30fb\u30d2\u30c3\u30c80\u56de\u30fb\u8aa4\u308a0\u56de\u3002\" style=\"width:100%;height:auto;max-width:700px\"><figcaption>\u540c\u3058URL\u3078\u56db\u7a2e\u985e\u306e\u8981\u6c42\u3092\u4e8c\u5de1\u3055\u305b\u305f\u8aac\u660e\u7528\u30e2\u30c7\u30eb\u3002\u4fdd\u5b58\u5fdc\u7b54\u306f\u3059\u3079\u3066\u65b0\u9bae\u3068\u3057\u3001\u691c\u8a3c\u901a\u4fe1\u30fb\u5bb9\u91cf\u5236\u9650\u30fb\u5b9f\u969b\u306e\u5727\u7e2e\u91cf\u306f\u542b\u3081\u3066\u3044\u306a\u3044\u3002\u30d2\u30c3\u30c8\u6570\u3060\u3051\u3067\u306a\u304f\u3001\u6b63\u3057\u3044\u8868\u73fe\u304c\u8fd4\u3063\u305f\u304b\u3092\u4f75\u305b\u3066\u898b\u308b\u3002<\/figcaption><\/figure>\n<h2>\u4f55\u3092\u540c\u3058\u3068\u307f\u306a\u3059\u304b\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u306e\u4ed5\u69d8\u306b\u5f93\u3046<\/h2>\n<p>\u73fe\u5b9f\u306e\u7167\u5408\u306f\u3001\u3059\u3079\u3066\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u5358\u7d14\u306a\u6587\u5b57\u5217\u3068\u3057\u3066\u6bd4\u3079\u308c\u3070\u3088\u3044\u3001\u3068\u3044\u3046\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002RFC\u306f\u3001\u5404\u6b04\u306e\u69cb\u6587\u3067\u8a31\u3055\u308c\u308b\u7a7a\u767d\u306e\u8abf\u6574\u3001\u540c\u540d\u306e\u8907\u6570\u884c\u306e\u7d50\u5408\u3001\u610f\u5473\u304c\u540c\u3058\u3068\u5206\u304b\u308b\u6b63\u898f\u5316\u3092\u8a8d\u3081\u3066\u3044\u307e\u3059\u3002\u5024\u306e\u9806\u756a\u3092\u5909\u3048\u3066\u3088\u3044\u304b\u3001\u5927\u6587\u5b57\u3068\u5c0f\u6587\u5b57\u3092\u540c\u4e00\u8996\u3067\u304d\u308b\u304b\u306f\u3001\u305d\u306e\u30d8\u30c3\u30c0\u30fc\u306e\u5b9a\u7fa9\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u4f55\u3067\u3082\u4e26\u3079\u66ff\u3048\u305f\u308a\u5c0f\u6587\u5b57\u306b\u3057\u305f\u308a\u3059\u308b\u898f\u5247\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002[2\u30014.1\u7bc0]<\/p>\n<p>\u307e\u305f\u3001\u8981\u6c42\u306b\u305d\u306e\u30d8\u30c3\u30c0\u30fc\u304c\u306a\u304b\u3063\u305f\u5834\u5408\u306f\u3001\u540c\u3058\u304f\u5b58\u5728\u3057\u306a\u3044\u8981\u6c42\u3068\u3060\u3051\u4e00\u81f4\u3057\u307e\u3059\u3002\u300c\u6307\u5b9a\u306a\u3057\u300d\u3092\u52dd\u624b\u306b\u7279\u5b9a\u306e\u5024\u3078\u7f6e\u304d\u63db\u3048\u308b\u3068\u3001\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u4f7f\u3063\u305f\u65e2\u5b9a\u5024\u306e\u9078\u629e\u3068\u98df\u3044\u9055\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u524d\u306e\u30e2\u30c7\u30eb\u304c\u5358\u72ec\u306e\u5024\u3060\u3051\u3092\u4f7f\u3063\u305f\u306e\u306f\u3001\u3053\u306e\u554f\u984c\u3068\u30ad\u30fc\u306e\u6570\u306e\u554f\u984c\u3092\u5207\u308a\u5206\u3051\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p><code>Vary: *<\/code>\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u306f\u300c\u3042\u3089\u3086\u308b\u8981\u6c42\u306b\u4e00\u81f4\u3059\u308b\u300d\u3068\u3044\u3046\u5370\u3067\u306f\u306a\u304f\u3001\u8981\u6c42\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5916\u3082\u542b\u3080\u9078\u629e\u6761\u4ef6\u304c\u95a2\u4fc2\u3057\u5f97\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u7167\u5408\u3067\u306f\u5e38\u306b\u4e0d\u4e00\u81f4\u306b\u306a\u308a\u3001\u4fdd\u5b58\u5fdc\u7b54\u3092\u9069\u5207\u306b\u4f7f\u3048\u308b\u304b\u306f\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3078\u8981\u6c42\u3092\u8ee2\u9001\u3057\u306a\u3044\u3068\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002\u4fdd\u5b58\u305d\u306e\u3082\u306e\u306e\u7981\u6b62\u3092\u610f\u5473\u3059\u308b<code>no-store<\/code>\u3068\u306f\u5f79\u5272\u304c\u7570\u306a\u308a\u307e\u3059\u3002[1][2]<\/p>\n<h2>\u65b0\u3057\u3044\u5fdc\u7b54\u3067\u3082\u3001\u5225\u306e\u8981\u6c42\u5411\u3051\u306a\u3089\u4f7f\u3048\u306a\u3044<\/h2>\n<p><code>max-age<\/code>\u306e\u3088\u3046\u306a\u65b0\u9bae\u3055\u306e\u6761\u4ef6\u306f\u3001\u300c\u3044\u3064\u307e\u3067\u78ba\u8a8d\u306a\u3057\u3067\u4f7f\u3048\u308b\u304b\u300d\u3092\u6271\u3044\u307e\u3059\u3002Vary\u306f\u300c\u3069\u306e\u8981\u6c42\u306b\u5bfe\u5fdc\u3059\u308b\u5fdc\u7b54\u306a\u306e\u304b\u300d\u3092\u6271\u3044\u307e\u3059\u3002\u65e5\u672c\u8a9e\u5411\u3051\u306e\u4fdd\u5b58\u5fdc\u7b54\u304c\u307e\u3060\u65b0\u9bae\u3067\u3082\u3001\u82f1\u8a9e\u3092\u6307\u5b9a\u3057\u305f\u8981\u6c42\u3078\u305d\u306e\u307e\u307e\u4f7f\u3048\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u9006\u306b\u8981\u6c42\u6761\u4ef6\u304c\u4e00\u81f4\u3057\u3066\u3082\u3001\u53e4\u304f\u306a\u3063\u3066\u3044\u308c\u3070\u518d\u691c\u8a3c\u306a\u3069\u5225\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u3092\u70b9\u691c\u3059\u308b\u3068\u304d\u306f\u3001\u307e\u305a\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u5b9f\u969b\u306b\u4f55\u3092\u898b\u3066\u8868\u73fe\u3092\u9078\u3076\u304b\u3092\u6d17\u3044\u51fa\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u305d\u306e\u9055\u3044\u3092Vary\u3084\u5225\u306eURL\u8a2d\u8a08\u3078\u3069\u3046\u53cd\u6620\u3059\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u4fdd\u5b58\u8a31\u53ef\u3001\u65b0\u9bae\u3055\u3001\u518d\u691c\u8a3c\u306e\u6307\u793a\u3092\u7167\u5408\u3057\u307e\u3059\u3002\u671f\u5f85\u3059\u308b\u672c\u6587\u304c\u540c\u3058\u4e8c\u3064\u306e\u8981\u6c42\u3092\u5225\u30ad\u30fc\u3078\u5206\u3051\u3066\u3044\u306a\u3044\u304b\u3001\u9055\u3046\u672c\u6587\u304c\u5fc5\u8981\u306a\u4e8c\u3064\u306e\u8981\u6c42\u3092\u540c\u3058\u30ad\u30fc\u3078\u307e\u3068\u3081\u3066\u3044\u306a\u3044\u304b\u3001\u5bfe\u306b\u306a\u308b\u30b1\u30fc\u30b9\u3092\u7528\u610f\u3059\u308b\u3068\u78ba\u8a8d\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u969b\u3001\u8a8d\u8a3c\u3084\u5229\u7528\u8005\u5225\u30c7\u30fc\u30bf\u3092\u3053\u306e\u6bd4\u8f03\u30e2\u30c7\u30eb\u306b\u5b89\u6613\u306b\u542b\u3081\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002Vary\u306f\u3001\u30a2\u30af\u30bb\u30b9\u6a29\u306e\u78ba\u8a8d\u3084\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u3078\u306e\u4fdd\u5b58\u7981\u6b62\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u672c\u7a3f\u306e\u4f8b\u306f\u5229\u7528\u8005\u5171\u901a\u306e\u6848\u5185\u30da\u30fc\u30b8\u3067\u3042\u308a\u3001\u79d8\u5bc6\u60c5\u5831\u306e\u914d\u4fe1\u8a2d\u8a08\u3092\u691c\u8a3c\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u88c5\u3054\u3068\u306e\u30ad\u30fc\u8a2d\u5b9a\u3084\u30d8\u30c3\u30c0\u30fc\u306e\u66f8\u63db\u3048\u3082\u542b\u3081\u3001\u6700\u7d42\u7684\u306b\u8fd4\u3055\u308c\u305f\u672c\u6587\u30fb\u8a00\u8a9e\u30fb\u7b26\u53f7\u5316\u3068\u3001\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3078\u554f\u3044\u5408\u308f\u305b\u305f\u56de\u6570\u3092\u4e00\u7dd2\u306b\u89b3\u6e2c\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li>RFC 9110\u300cHTTP Semantics\u300d\uff082022\u5e746\u6708\u3001STD 97\uff09\u300112.5.5\u7bc0\u300cVary\u300d\u3002<a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc9110.html#section-12.5.5\">\u516c\u5f0f\u672c\u6587<\/a><\/li>\n<li>RFC 9111\u300cHTTP Caching\u300d\uff082022\u5e746\u6708\u3001STD 98\uff09\u30014.1\u7bc0\u300cCalculating Cache Keys with the Vary Header Field\u300d\u30014.2\u7bc0\u300cFreshness\u300d\u3002<a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc9111.html#section-4.1\">\u516c\u5f0f\u672c\u6587<\/a>\u3002\u516b\u8981\u6c42\u306e\u4ef6\u6570\u3068\u6bd4\u8f03\u56f3\u306f\u3001\u660e\u793a\u3057\u305f\u4eee\u5b9a\u306b\u3088\u308bQuantum Sea\u306e\u72ec\u81ea\u30e2\u30c7\u30eb\u3067\u3059\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u540c\u3058URL\u3078\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3082\u3001\u65e5\u672c\u8a9e\u306e\u672c\u6587\u3068\u82f1\u8a9e\u306e\u672c\u6587\u3001\u5727\u7e2e\u3057\u305f\u672c\u6587\u3068\u5727\u7e2e\u3057\u3066\u3044\u306a\u3044\u672c\u6587\u304c\u8fd4\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304cURL\u3060\u3051\u3092\u624b\u304c\u304b\u308a\u306b\u4ee5\u524d\u306e\u5fdc\u7b54\u3092\u4f7f\u3046\u3068\u3001\u5225\u306e\u6761\u4ef6\u3067\u9078\u3070\u308c\u305f\u5185\u5bb9\u3092\u6e21\u3057\u3066\u3057\u307e\u3044\u304b\u306d\u307e\u305b\u3093\u3002 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1100,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[29],"tags":[279],"class_list":["post-1103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-communications-networking","tag-http"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-http-vary-cache-key-selection-20261022-featured-c0a55326248b.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1103"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1103\/revisions"}],"predecessor-version":[{"id":1104,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1103\/revisions\/1104"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1100"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}