{"id":1195,"date":"2026-10-23T22:00:00","date_gmt":"2026-10-23T13:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1195"},"modified":"2026-10-22T19:28:04","modified_gmt":"2026-10-22T10:28:04","slug":"qs-http-age-freshness-lifetime-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1195","title":{"rendered":"HTTP\u306eAge\u3001\u53d7\u3051\u53d6\u3063\u305f\u76f4\u5f8c\u3067\u3082\u5fdc\u7b54\u304c\u65b0\u3057\u3044\u3068\u306f\u9650\u3089\u306a\u3044"},"content":{"rendered":"<p>\u540c\u3058\u6848\u5185\u30da\u30fc\u30b8\u3092\u4f55\u5ea6\u3082\u914d\u4fe1\u3059\u308b\u3068\u304d\u3001HTTP\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u4fdd\u5b58\u6e08\u307f\u306e\u5fdc\u7b54\u3092\u518d\u5229\u7528\u3057\u3066\u3001\u901a\u4fe1\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u4ed5\u4e8b\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u5fdc\u7b54\u306b<code>Cache-Control: max-age=60<\/code>\u3068\u3042\u308c\u3070\u3001\u53d7\u3051\u53d6\u3063\u3066\u304b\u308960\u79d2\u9593\u306f\u305d\u306e\u307e\u307e\u4f7f\u3048\u308b\u3088\u3046\u306b\u3082\u898b\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u9014\u4e2d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u65e2\u306b\u6642\u9593\u304c\u7d4c\u3063\u3066\u3044\u308b\u306a\u3089\u3001\u53d7\u4fe1\u3057\u305f\u5074\u306b\u6b8b\u308b\u6642\u9593\u306f60\u79d2\u3088\u308a\u77ed\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u7d4c\u904e\u3092\u8aad\u307f\u53d6\u308b\u624b\u304c\u304b\u308a\u304c<code>Age<\/code>\u3067\u3059\u3002HTTP\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u898f\u683cRFC 9111\u306b\u6cbf\u3063\u3066\u3001\u5fdc\u7b54\u306e\u5e74\u9f62\u3068\u6709\u52b9\u671f\u9593\u3092\u5206\u3051\u3001\u4e0a\u6d41\u306740\u79d2\u7d4c\u904e\u3057\u305f\u5fdc\u7b54\u304c\u5c4a\u304f\u4f8b\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<section class=\"influvetor-quick-summary\" aria-label=\"\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>Age\u306f\u3001\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u5fdc\u7b54\u304c\u751f\u6210\u307e\u305f\u306f\u691c\u8a3c\u3055\u308c\u3066\u304b\u3089\u306e\u7d4c\u904e\u6642\u9593\u306e\u63a8\u5b9a\u5024\u3067\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u3092\u6700\u5f8c\u306b\u7de8\u96c6\u3057\u3066\u304b\u3089\u306e\u6642\u9593\u3068\u306f\u9055\u3044\u307e\u3059\u3002<\/li>\n<li>\u53d7\u4fe1\u6642\u306e\u5e74\u9f62\u306b\u306f\u3001\u4e0a\u6d41\u3067\u904e\u3054\u3057\u305f\u6642\u9593\u3084\u901a\u4fe1\u306e\u9045\u308c\u3092\u53cd\u6620\u3057\u307e\u3059\u3002\u4fdd\u5b58\u5148\u304c\u5909\u308f\u3063\u3066\u3082\u3001\u6709\u52b9\u671f\u9593\u304c\u6bce\u56de\u6700\u521d\u304b\u3089\u59cb\u307e\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u6709\u52b9\u671f\u959360\u79d2\u3001\u73fe\u5728\u306e\u5e74\u9f6252\u79d2\u306a\u3089\u3001\u9bae\u5ea6\u306e\u5883\u754c\u307e\u3067\u6b8b\u308b\u306e\u306f8\u79d2\u3067\u3059\u3002\u9bae\u5ea6\u304c\u6b8b\u3063\u3066\u3044\u308b\u3053\u3068\u3060\u3051\u3067\u3001\u3042\u3089\u3086\u308b\u8981\u6c42\u306b\u518d\u5229\u7528\u3067\u304d\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u6709\u52b9\u671f\u9593\u3068\u5e74\u9f62\u306f\u3001\u6bd4\u3079\u308b\u305f\u3081\u306e\u5225\u306e\u5024<\/h2>\n<p>HTTP\u306e\u300cfresh\u300d\u306f\u3001\u5fdc\u7b54\u306e\u672c\u6587\u304c\u4e16\u754c\u306e\u6700\u65b0\u60c5\u5831\u3068\u5fc5\u305a\u4e00\u81f4\u3057\u3066\u3044\u308b\u3001\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u898f\u5247\u306b\u57fa\u3065\u3044\u3066\u3001\u9bae\u5ea6\u304c\u4fdd\u305f\u308c\u3066\u3044\u308b\u3068\u5224\u65ad\u3055\u308c\u308b\u72b6\u614b\u3067\u3059\u3002\u751f\u6210\u5f8c\u306b\u5143\u306e\u30c7\u30fc\u30bf\u304c\u5909\u308f\u3063\u3066\u3044\u3066\u3082\u3001\u6709\u52b9\u671f\u9593\u306e\u9014\u4e2d\u3067\u306f\u4fdd\u5b58\u6e08\u307f\u306e\u5fdc\u7b54\u3092\u4f7f\u3046\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u5224\u65ad\u306b\u306f\u4e8c\u3064\u306e\u5024\u3092\u4f7f\u3044\u307e\u3059\u3002\u4e00\u3064\u306f<em>freshness lifetime<\/em>\u3001\u3064\u307e\u308a\u9bae\u5ea6\u3092\u4fdd\u3064\u3068\u5b9a\u3081\u3089\u308c\u305f\u671f\u9593\u3002\u3082\u3046\u4e00\u3064\u306f<em>current age<\/em>\u3001\u3064\u307e\u308a\u4fdd\u5b58\u4e2d\u306e\u5fdc\u7b54\u306b\u3064\u3044\u3066\u898b\u7a4d\u3082\u3063\u305f\u73fe\u5728\u306e\u5e74\u9f62\u3067\u3059\u3002\u671f\u9593\u304c\u5e74\u9f62\u3088\u308a\u9577\u3044\u9593\u306ffresh\u3067\u3001\u540c\u3058\u5024\u306b\u9054\u3059\u308b\u3068stale\u306b\u306a\u308a\u307e\u3059\u3002stale\u306f\u3001\u3053\u306e\u9bae\u5ea6\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3055\u306a\u304f\u306a\u3063\u305f\u72b6\u614b\u3092\u6307\u3057\u307e\u3059\u3002[1]<\/p>\n<p>\u4ee5\u4e0b\u3067\u306f\u3001\u5bfe\u8c61\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u9069\u7528\u3055\u308c\u308b\u6709\u52b9\u671f\u9593\u304cmax-age\u3067\u6307\u5b9a\u3055\u308c\u305f60\u79d2\u3067\u3042\u308a\u3001\u4fdd\u5b58\u3084\u8981\u6c42\u3068\u306e\u7167\u5408\u306b\u95a2\u3059\u308b\u307b\u304b\u306e\u6761\u4ef6\u3082\u6e80\u305f\u3057\u3066\u3044\u308b\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u5411\u3051\u306es-maxage\u306a\u3069\u3001\u5225\u306e\u6307\u5b9a\u304c\u512a\u5148\u3055\u308c\u308b\u5834\u9762\u306f\u3053\u306e\u4f8b\u306b\u542b\u3081\u307e\u305b\u3093\u3002<\/p>\n<h2>\u53d7\u3051\u53d6\u3063\u305fAge\u306b\u3001\u901a\u4fe1\u3068\u4fdd\u5b58\u4e2d\u306e\u6642\u9593\u3092\u52a0\u3048\u308b<\/h2>\n<p>\u3042\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u4e0a\u6d41\u3078\u8981\u6c42\u3092\u9001\u308a\u3001\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u308b\u5834\u9762\u3092\u8003\u3048\u307e\u3059\u3002\u8a08\u7b97\u3092\u898b\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u3001\u6642\u523b\u306f\u540c\u3058\u57fa\u6e96\u304b\u3089\u6e2c\u3063\u305f\u79d2\u6570\u3068\u3057\u3001\u6642\u8a08\u306e\u305a\u308c\u306f\u306a\u3044\u3082\u306e\u3068\u3057\u307e\u3059\u3002\u5b9f\u969b\u306e\u901a\u4fe1\u3067\u306f\u3001Date\u306f\u65e5\u6642\u3001Age\u306f\u79d2\u6570\u3068\u3057\u3066\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8981\u6c42\u3092\u9001\u3063\u305f\u6642\u523b\uff1a100\u79d2<\/li>\n<li>\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u3063\u305f\u6642\u523b\uff1a102\u79d2<\/li>\n<li>\u5fdc\u7b54\u306eDate\u304c\u793a\u3059\u6642\u523b\uff1a95\u79d2<\/li>\n<li>\u53d7\u3051\u53d6\u3063\u305fAge\uff1a40\u79d2<\/li>\n<\/ul>\n<p>Date\u3060\u3051\u3092\u898b\u308c\u3070\u3001\u53d7\u4fe1\u6642\u306b\u306f102\u221295\uff1d7\u79d2\u304c\u904e\u304e\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u3001Age\u306b\u306f\u4e0a\u6d41\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u3069\u3067\u306e\u7d4c\u904e\u304c\u53cd\u6620\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u8981\u6c42\u304b\u3089\u53d7\u4fe1\u307e\u3067\u306e2\u79d2\u3092Age\u306b\u52a0\u3048\u305f\u88dc\u6b63\u5024\u306f\u300140\uff0b2\uff1d42\u79d2\u3067\u3059\u3002Date\u304b\u3089\u306e7\u79d2\u3060\u3051\u3092\u4f7f\u3046\u3068\u3001\u4e0a\u6d41\u304b\u3089\u4f1d\u308f\u3063\u305f\u7d4c\u904e\u6642\u9593\u3092\u904e\u5c0f\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>RFC 9111\u306f\u3001Age\u306b\u5fdc\u7b54\u306e\u9045\u308c\u3092\u52a0\u3048\u305f\u5024\u3092\u53d7\u4fe1\u6642\u306e\u5e74\u9f62\u3068\u3057\u3066\u4f7f\u3046\u3053\u3068\u3092\u8a8d\u3081\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001Age\u3092\u6b63\u3057\u304f\u633f\u5165\u3057\u306a\u3044\u53e4\u3044\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6df7\u3058\u308b\u5834\u5408\u306b\u306f\u3001Date\u304b\u3089\u6c42\u3081\u305f\u5024\u3068\u6bd4\u3079\u3066\u5927\u304d\u3044\u65b9\u3092\u53d6\u308b\u3001\u3088\u308a\u4fdd\u5b88\u7684\u306a\u8a08\u7b97\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u5b9f\u88c5\u304c\u5e38\u306b\u5927\u304d\u3044\u65b9\u3092\u53d6\u3089\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u898f\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u4f8b\u3067\u306f\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3067\u308242\u79d2\u306b\u306a\u308a\u307e\u3059\u3002[1]<\/p>\n<p>\u3055\u3089\u306b\u3001\u305d\u306e\u5fdc\u7b54\u3092\u53d7\u4fe1\u5f8c10\u79d2\u9593\u4fdd\u5b58\u3057\u3001\u6642\u523b112\u79d2\u3067\u4f7f\u3046\u3068\u3057\u307e\u3059\u3002\u73fe\u5728\u306e\u5e74\u9f62\u306f42\uff0b10\uff1d52\u79d2\u3067\u3059\u3002max-age=60\u306a\u3089\u3001\u9bae\u5ea6\u306e\u5883\u754c\u306b\u9054\u3059\u308b\u307e\u3067\u6b8b\u308b\u6642\u9593\u306f60\u221252\uff1d8\u79d2\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-http-age-freshness-lifetime-20261022-figure-5acd519e701c.png\" alt=\"\u6709\u52b9\u671f\u959360\u79d2\u306e\u3046\u3061\u3001\u53d7\u4fe1\u6642\u306e\u88dc\u6b63\u5e74\u9f6242\u79d2\u3068\u53d7\u4fe1\u5f8c\u306e\u4fdd\u5b5810\u79d2\u3092\u6d88\u8cbb\u3057\u3001\u6b8b\u308a\u306f8\u79d2\u3002\u53d7\u4fe1\u6642\u304b\u308960\u79d2\u3092\u6570\u3048\u76f4\u3059\u3068\u4e0a\u6d41\u3067\u7d4c\u904e\u3057\u305f\u6642\u9593\u3092\u898b\u843d\u3068\u3059\u3002\" style=\"max-width:100%;height:auto\"><figcaption>\u540c\u3058\u6642\u523b\u57fa\u6e96\u3092\u4eee\u5b9a\u3057\u305f\u72ec\u81ea\u306e\u8a08\u7b97\u4f8b\u3002\u4e0a\u6d41\u304b\u3089\u53d7\u3051\u53d6\u3063\u305fAge\u3092\u4f7f\u3063\u3066\u6709\u52b9\u671f\u9593\u306e\u6b8b\u308a\u3092\u6c42\u3081\u3066\u3044\u307e\u3059\u3002\u901a\u4fe1\u306e\u5b9f\u6e2c\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/figcaption><\/figure>\n<p>\u53d7\u4fe1\u3057\u305f\u6642\u70b9\u3092\u30bc\u30ed\u3068\u3057\u3066\u6570\u3048\u76f4\u3059\u3068\u3001\u6642\u523b112\u79d2\u3067\u306f10\u79d2\u3057\u304b\u7d4c\u3063\u3066\u3044\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u3001\u6b8b\u308a\u309250\u79d2\u3068\u8aa4\u8a8d\u3057\u307e\u3059\u3002\u9014\u4e2d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u5897\u3048\u308b\u305f\u3073\u306b\u671f\u9593\u3092\u5ef6\u3070\u3055\u306a\u3044\u3088\u3046\u3001\u4e0a\u6d41\u307e\u3067\u542b\u3081\u305f\u5e74\u9f62\u3092\u5f15\u304d\u7d99\u3050\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h2>Age\u304c\u306a\u3044\u3068\u304d\u3082\u3001\u53d7\u4fe1\u76f4\u5f8c\u3060\u304b\u3089\u65b0\u3057\u3044\u3068\u306f\u6c7a\u3081\u306a\u3044<\/h2>\n<p>Age\u304c\u6b20\u3051\u3066\u3044\u308b\u5834\u5408\u3001\u898f\u683c\u306e\u8a08\u7b97\u3067\u306f\u53d7\u3051\u53d6\u3063\u305fAge\u306e\u5024\u30920\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u305d\u308c\u3060\u3051\u3067\u73fe\u5728\u306e\u5e74\u9f62\u304c\u5e38\u306b0\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5fdc\u7b54\u306e\u9045\u308c\u3084Date\u3092\u4f7f\u3063\u305f\u898b\u7a4d\u3082\u308a\u3001\u53d7\u4fe1\u5f8c\u306b\u4fdd\u5b58\u3057\u3066\u3044\u305f\u6642\u9593\u306f\u5225\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u540c\u3058\u6642\u523b\u6761\u4ef6\u3067Age\u3060\u3051\u304c\u306a\u3051\u308c\u3070\u3001Age\u306b\u5fdc\u7b54\u306e\u9045\u308c\u3092\u52a0\u3048\u305f\u5024\u306f2\u79d2\u3001Date\u304b\u3089\u306e\u5024\u306f7\u79d2\u3067\u3059\u3002\u5148\u307b\u3069\u306e\u4fdd\u5b88\u7684\u306a\u65b9\u6cd5\u306a\u3089\u53d7\u4fe1\u6642\u306e\u5e74\u9f62\u306f7\u79d2\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u300cAge\u304c\u306a\u3044\u306a\u3089\u5fc5\u305a7\u79d2\u300d\u3068\u3044\u3046\u4e00\u822c\u5247\u3067\u306f\u306a\u304f\u3001\u793a\u3057\u305f\u6761\u4ef6\u3068\u8a08\u7b97\u65b9\u6cd5\u306b\u3088\u308b\u7d50\u679c\u3067\u3059\u3002<\/p>\n<p>RFC 9111\u306f\u3001Age\u304c\u5b58\u5728\u3057\u306a\u3044\u3053\u3068\u304b\u3089\u3001\u4eca\u56de\u306e\u8981\u6c42\u304c\u5143\u306e\u30b5\u30fc\u30d0\u30fc\u307e\u3067\u5230\u9054\u3057\u305f\u3068\u306f\u5224\u65ad\u3067\u304d\u306a\u3044\u3001\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u9006\u306bAge\u306e\u5024\u3092\u898b\u3066\u3082\u3001\u305d\u308c\u3092\u30d5\u30a1\u30a4\u30eb\u306e\u6700\u7d42\u66f4\u65b0\u304b\u3089\u306e\u7d4c\u904e\u6642\u9593\u3078\u8aad\u307f\u66ff\u3048\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u5fdc\u7b54\u306e\u751f\u6210\u30fb\u691c\u8a3c\u3068\u3001\u8cc7\u6e90\u305d\u306e\u3082\u306e\u306e\u7de8\u96c6\u306f\u5225\u306e\u51fa\u6765\u4e8b\u3067\u3059\u3002[1]<\/p>\n<h2>\u5883\u754c\u3092\u8d8a\u3048\u305f\u5f8c\u306f\u3001\u5225\u306e\u898f\u5247\u3092\u78ba\u8a8d\u3059\u308b<\/h2>\n<p>\u4f8b\u306e\u5e74\u9f62\u304c60\u79d2\u306b\u9054\u3059\u308b\u3068\u3001freshness lifetime\u3088\u308a\u5c0f\u3055\u3044\u3068\u3044\u3046\u6761\u4ef6\u3092\u6e80\u305f\u3055\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001stale\u306b\u306a\u3063\u305f\u77ac\u9593\u306b\u672c\u6587\u3092\u5fc5\u305a\u524a\u9664\u3059\u308b\u3001\u3068\u3044\u3046\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u518d\u691c\u8a3c\u306b\u4f7f\u3046\u305f\u3081\u4fdd\u5b58\u3092\u7d9a\u3051\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3057\u3001\u53e4\u3044\u5fdc\u7b54\u306e\u63d0\u4f9b\u304c\u660e\u793a\u7684\u306b\u8a31\u53ef\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u53ef\u5426\u306b\u306f\u3001\u518d\u5229\u7528\u3092\u7981\u3058\u308b\u6307\u5b9a\u3084\u5207\u65ad\u72b6\u614b\u306a\u3069\u3001\u5225\u306e\u898f\u5247\u304c\u95a2\u308f\u308a\u307e\u3059\u3002<\/p>\n<p>\u53cd\u5bfe\u306b\u3001\u5e74\u9f62\u304c52\u79d2\u3067fresh\u3067\u3082\u3001\u305d\u308c\u3060\u3051\u3067\u518d\u5229\u7528\u304c\u78ba\u5b9a\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8981\u6c42\u3068\u4fdd\u5b58\u6e08\u307f\u5fdc\u7b54\u304c\u5bfe\u5fdc\u3059\u308b\u304b\u3001Vary\u3067\u5206\u3051\u3089\u308c\u305f\u6761\u4ef6\u304c\u4e00\u81f4\u3059\u308b\u304b\u3001no-cache\u306b\u3088\u308b\u691c\u8a3c\u304c\u5fc5\u8981\u304b\u3001\u3068\u3044\u3063\u305f\u70b9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u9bae\u5ea6\u306e\u8a08\u7b97\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u5224\u65ad\u3092\u69cb\u6210\u3059\u308b\u4e00\u6bb5\u968e\u3067\u3059\u3002<\/p>\n<p>\u8abf\u67fb\u3059\u308b\u3068\u304d\u306f\u3001\u300c60\u79d2\u3068\u3044\u3046\u8a2d\u5b9a\u3092\u898b\u305f\u300d\u3060\u3051\u3067\u7d42\u308f\u3089\u305a\u3001\u3069\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u9069\u7528\u3055\u308c\u308b\u671f\u9593\u306a\u306e\u304b\u3001\u53d7\u4fe1\u3057\u305fAge\u306f\u3044\u304f\u3064\u304b\u3001\u8981\u6c42\u3068\u5fdc\u7b54\u306e\u6642\u523b\u3092\u3069\u3046\u8a18\u9332\u3057\u305f\u304b\u3001\u53d7\u4fe1\u5f8c\u3069\u308c\u3060\u3051\u4fdd\u5b58\u3057\u305f\u304b\u3092\u5206\u3051\u3066\u6b8b\u3057\u307e\u3059\u3002\u6570\u5024\u3092\u540c\u3058\u57fa\u6e96\u3067\u6bd4\u3079\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b58\u306e\u52b9\u679c\u3068\u3001\u53e4\u3044\u5185\u5bb9\u3092\u4f7f\u3044\u7d9a\u3051\u308b\u6642\u9593\u306e\u4e0a\u9650\u3092\u8aad\u307f\u9055\u3048\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ul>\n<li>[1] <a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc9111.html\">RFC 9111: HTTP Caching\uff082022\u5e746\u6708\uff09<\/a> \u2014 \u7b2c4.2\u7bc0\u306e\u9bae\u5ea6\u30e2\u30c7\u30eb\u3001\u7b2c4.2.1\u7bc0\u306e\u6709\u52b9\u671f\u9593\u3001\u7b2c4.2.3\u7bc0\u306e\u5e74\u9f62\u8a08\u7b97\u3001\u7b2c4.2.4\u7bc0\u306e\u53e4\u3044\u5fdc\u7b54\u306e\u63d0\u4f9b\u6761\u4ef6\u3001\u7b2c5.1\u7bc0\u306eAge\u3002\u672c\u6587\u306e\u79d2\u6570\u3068\u56f3\u306f\u3001\u6761\u4ef6\u3092\u660e\u8a18\u3057\u305f\u72ec\u81ea\u306e\u8a08\u7b97\u4f8b\u3067\u3059\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u540c\u3058\u6848\u5185\u30da\u30fc\u30b8\u3092\u4f55\u5ea6\u3082\u914d\u4fe1\u3059\u308b\u3068\u304d\u3001HTTP\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u4fdd\u5b58\u6e08\u307f\u306e\u5fdc\u7b54\u3092\u518d\u5229\u7528\u3057\u3066\u3001\u901a\u4fe1\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u4ed5\u4e8b\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u5fdc\u7b54\u306bCache-Control: max-age=60\u3068\u3042\u308c\u3070\u3001\u53d7\u3051\u53d6\u3063\u3066\u304b\u308960\u79d2\u9593\u306f\u305d\u306e\u307e\u307e\u4f7f [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1193,"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-1195","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-age-freshness-lifetime-20261022-featured-dee0f462124b.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1195","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=1195"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1195\/revisions"}],"predecessor-version":[{"id":1196,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1195\/revisions\/1196"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1193"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}