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\u79c1\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8\u3084\u6c7a\u6e08\u30d7\u30ed\u30bb\u30b9\u3001\u3042\u308b\u3044\u306f\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u542b\u3080\u6587\u66f8\u306a\u3069\u3067\u3053\u306e\u8a2d\u5b9a\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e00\u6642\u30d5\u30a9\u30eb\u30c0\u306b\u30b3\u30d4\u30fc\u304c\u6b8b\u3089\u305a\u3001\u8aa4\u3063\u3066\u7b2c\u4e09\u8005\u306e\u624b\u306b\u6e21\u308b\u30ea\u30b9\u30af\u3092\u56de\u907f\u3067\u304d\u307e\u3059\u3002no-store\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u518d\u5229\u7528\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u3057\u3070\u3057\u3070max-age=0\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u307e\u3059\u3002 <strong>\u9664\u5916\u3059\u308b<\/strong>. \u3053\u3053\u3067\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3088\u308a\u3082\u5b89\u5168\u6027\u304c\u512a\u5148\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p><strong>\u518d\u691c\u8a3c\u304c\u5fc5\u8981<\/strong> \u6709\u52b9\u671f\u9650\u304c\u5207\u308c\u308b\u3068\u3059\u3050\u306b\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u518d\u7167\u4f1a\u3092\u5f37\u5236\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u304c\u30c0\u30a6\u30f3\u3057\u305f\u5834\u5408\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30ea\u30bd\u30fc\u30b9\u3092\u305d\u306e\u307e\u307e\u914d\u4fe1\u3057\u7d9a\u3051\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u306f\u3001\u67d4\u8edf\u306a\u969c\u5bb3\u5bfe\u7b56\u3088\u308a\u3082\u4e00\u8cab\u6027\u304c\u91cd\u8996\u3055\u308c\u308b\u5834\u9762\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002 \u79c1\u306f\u3001\u53e4\u3044\u30c7\u30fc\u30bf\u304c\u8aa4\u3063\u305f\u5224\u65ad\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306b\u3001\u3053\u306e\u8a2d\u5b9a\u3092\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30eb\u30fc\u30eb\u306b\u3088\u308a\u3001\u660e\u78ba\u306a <strong>\u62d8\u675f\u529b<\/strong> \u51e6\u7406\u306e\u904e\u7a0b\u3067\u3002.<\/p>\n\n<h2>\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u304a\u3088\u3073\u8010\u969c\u5bb3\u6027\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h2>\n<p>\u57fa\u672c\u8a2d\u5b9a\u306b\u52a0\u3048\u3066\u3001\u79c1\u306f <strong>S\u30de\u30af\u30b5\u30fc\u30b8\u30e5<\/strong>, <strong>\u6709\u52b9\u671f\u9650\u5207\u308c<\/strong> \u305d\u3057\u3066 <strong>\u3082\u3057\u30a8\u30e9\u30fc\u306a\u3089<\/strong>, \u3001\u30d7\u30ed\u30ad\u30b7\u3084CDN\u3092\u9069\u5207\u306b\u5236\u5fa1\u3057\u3001\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3067\u3082\u30e6\u30fc\u30b6\u30fc\u306b\u30b9\u30e0\u30fc\u30ba\u306a\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u3002. <em>S\u30de\u30af\u30b5\u30fc\u30b8\u30e5<\/em> \u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u5bfe\u3057\u3066\u306e\u307f\u72ec\u81ea\u306eTTL\u3092\u8a2d\u5b9a\u3057\u307e\u3059\uff08\u30d6\u30e9\u30a6\u30b6\u306f\u3053\u308c\u3092\u7121\u8996\u3057\u307e\u3059\uff09\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4f8b\u3048\u3070\u30d6\u30e9\u30a6\u30b6\u5074\u3067\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u671f\u9593\u3092\u77ed\u304f\uff08max-age=600\uff09\u8a2d\u5b9a\u3057\u3064\u3064\u3001\u30a8\u30c3\u30b8\u5074\u3067\u306f\u3088\u308a\u9577\u304f\u30ad\u30e3\u30c3\u30b7\u30e5\uff08s-maxage=86400\uff09\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002. <em>\u6709\u52b9\u671f\u9650\u5207\u308c<\/em> \u3053\u308c\u306b\u3088\u308a\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u66f4\u65b0\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u9593\u3082\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u6709\u52b9\u671f\u9650\u304c\u5207\u308c\u305f\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u6240\u5b9a\u306e\u6642\u9593\u3001\u5f15\u304d\u7d9a\u304d\u914d\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002. <em>\u3082\u3057\u30a8\u30e9\u30fc\u306a\u3089<\/em> \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\uff08\u4f8b\uff1a500\/\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\uff09\u3001\u30cf\u30fc\u30c9\u30a8\u30e9\u30fc\u3092\u8868\u793a\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001\u5c11\u3057\u53e4\u3044\u72b6\u614b\u306e\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002.<\/p>\n<p>\u516c\u958b\u7528\u3067\u3001\u3081\u3063\u305f\u306b\u5909\u66f4\u3055\u308c\u306a\u3044API\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3084JSON\u30b5\u30a4\u30c8\u30de\u30c3\u30d7\u306e\u5b9f\u7528\u7684\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\uff1a <code>Cache-Control: public, max-age=600, s-maxage=86400, stale-while-revalidate=30, stale-if-error=600<\/code>. \u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u6bd4\u8f03\u7684\u6700\u65b0\u306e\u72b6\u614b\u306b\u4fdd\u305f\u308c\u3001CDN\u306f\u52b9\u7387\u7684\u306b\u6a5f\u80fd\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u4e00\u6642\u7684\u306a\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3084\u518d\u691c\u8a3c\u306e\u9045\u5ef6\u3092\u611f\u3058\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u91cd\u8981\u306a\u9818\u57df\u3084\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3055\u308c\u305f\u9818\u57df\u306b\u3064\u3044\u3066\u306f\u3001\u610f\u56f3\u7684\u306b\u3053\u3046\u3057\u305f\u67d4\u8edf\u306a\u6307\u91dd\u306e\u9069\u7528\u5bfe\u8c61\u5916\u3068\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>Expires\u3001ETag\u3001Last-Modified \u3068\u306e\u9023\u643a<\/h2>\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>\u671f\u9650\u5207\u308c<\/strong> \u305b\u3044\u305c\u3044\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001Cache-Control \u306e\u65b9\u304c\u3088\u308a\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u3001\u4e21\u65b9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f Cache-Control \u304c\u512a\u5148\u3055\u308c\u308b\u304b\u3089\u3067\u3059\u3002ETag \u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30bd\u30fc\u30b9\u306e\u4e00\u610f\u306a\u30d5\u30a3\u30f3\u30ac\u30fc\u30d7\u30ea\u30f3\u30c8\u3092\u8fd4\u3059\u305f\u3081\u3001\u30d6\u30e9\u30a6\u30b6\u306f If-None-Match \u3092\u901a\u3058\u3066\u7c21\u5358\u306a\u518d\u691c\u8a3c\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002 Last-Modified\u306f\u6700\u7d42\u66f4\u65b0\u65e5\u6642\u3092\u63d0\u4f9b\u3057\u3001If-Modified-Since\u3068\u9023\u643a\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u5909\u66f4\u304c\u306a\u3044\u5834\u5408\u3001\u30b5\u30fc\u30d0\u30fc\u306f\u30b9\u30c6\u30fc\u30bf\u30b9304\u306e\u307f\u3092\u8fd4\u3059\u305f\u3081\u3001\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3082\u5e2f\u57df\u5e45\u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u9023\u643a\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u3092\u30e6\u30fc\u30b6\u30fc\u306e\u8fd1\u304f\u306b\u4fdd\u6301\u3057\u3001 <strong>\u5f80\u5fa9<\/strong>.<\/p>\n<p>\u624b\u306b\u3059\u308b <a href=\"https:\/\/webhosting.de\/ja\/http-%e6%9d%a1%e4%bb%b6%e4%bb%98%e3%81%8d%e3%83%aa%e3%82%af%e3%82%a8%e3%82%b9%e3%83%88%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e6%a4%9c%e8%a8%bc%e6%9c%80%e9%81%a9%e5%8c%96%e3%83%91%e3%83%83\/\">\u6761\u4ef6\u4ed8\u304d\u30ea\u30af\u30a8\u30b9\u30c8<\/a>, \u65b0\u3057\u3044\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u914d\u4fe1\u3092\u59a8\u3052\u308b\u3053\u3068\u306a\u304f\u3001\u30da\u30fc\u30b8\u30d3\u30e5\u30fc\u3042\u305f\u308a\u306e\u30b3\u30b9\u30c8\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u624b\u6cd5\u306f\u3001HTML\u306b\u304a\u3051\u308b\u77ed\u3044max-age\u5024\u306e\u5236\u9650\u3092\u88dc\u5b8c\u3057\u3001\u6700\u65b0\u306e\u8868\u793a\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u30a2\u30bb\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u4e3b\u306b\u9577\u3044\u6709\u52b9\u671f\u9593\u3092\u8a2d\u5b9a\u3057\u3001\u4e0d\u5fc5\u8981\u306a\u691c\u8a3c\u3092\u907f\u3051\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001 <strong>\u30b5\u30fc\u30d0\u30fc<\/strong> \u305d\u3057\u3066\u3001\u30ea\u30d4\u30fc\u30c8\u8a2a\u554f\u3092\u8457\u3057\u304f\u4fc3\u9032\u3057\u307e\u3059\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u660e\u78ba\u306a\u30eb\u30fc\u30eb\u306b\u57fa\u3065\u3044\u305f\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u30d1\u30b9\u304c\u69cb\u7bc9\u3055\u308c\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\/08\/WebOptimizationCacheControl1234.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>ETag\/Last-Modified\u306e\u5b9f\u8df5\uff1a\u9577\u6240\u3001\u77ed\u6240\u3001\u305d\u3057\u3066\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/h2>\n<p>\u5206\u6563\u74b0\u5883\u3067\u306f\u3001ETag\u304c <em>\u4e00\u8cab\u3057\u305f<\/em> \u3059\u3079\u3066\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u308f\u305f\u3063\u3066\u8a08\u7b97\u3055\u308c\u308b\u3002i\u30ce\u30fc\u30c9\u3092\u542b\u3080\u30d5\u30a1\u30a4\u30eb\u30d9\u30fc\u30b9\u306eETag\u306f\u3001\u30af\u30e9\u30b9\u30bf\u74b0\u5883\u306b\u304a\u3044\u3066\u4e0d\u8981\u306a\u30df\u30b9\u3092\u5f15\u304d\u8d77\u3053\u3059\u3002\u305d\u306e\u305f\u3081\u3001Apache\u3067\u306f\u610f\u56f3\u7684\u306bETag\u306e\u8a08\u7b97\u3092\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u308b\uff1a<\/p>\n<pre><code># Apache\uff1a\u9759\u7684\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u4e00\u8cab\u6027\u306e\u3042\u308bETag\nFileETag MTime Size\n# \u30aa\u30d7\u30b7\u30e7\u30f3\uff1a\u30c7\u30d5\u30a9\u30eb\u30c8\u306eETag\u3092\u524a\u9664\u3057\u3001\u72ec\u81ea\u306e\u30ed\u30b8\u30c3\u30af\u3092\u8a2d\u5b9a\u3059\u308b\n\n  #Header unset ETag\n<\/code><\/pre>\n<p>Nginx\u306e\u5834\u5408\u3001\u591a\u304f\u306e\u5834\u5408 <code>etag on;<\/code> \u9759\u7684\u30d5\u30a1\u30a4\u30eb\u7528\u3002 <em>\u52d5\u7684\u306a<\/em> \u30ec\u30b9\u30dd\u30f3\u30b9\u306eETag\u306f\u81ea\u5206\u3067\u751f\u6210\u3057\u3066\u3044\u307e\u3059\u2015\u2015\u7406\u60f3\u7684\u306b\u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u306e\u30cf\u30c3\u30b7\u30e5\u3068\u3057\u3066\u3067\u3059\u3002\u308f\u305a\u304b\u306a\u5909\u66f4\uff08\u4f8b\uff1a\u66f8\u5f0f\u5316\u3055\u308c\u305f\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\uff09\u306b\u5bfe\u3057\u3066\u8a31\u5bb9\u5ea6\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001 <strong>\u6709\u52b9\u671f\u9650\u304c\u77ed\u3044ETag<\/strong> (<code>W\/\"...\"<\/code>)\u3001\u30d0\u30a4\u30c8\u5358\u4f4d\u306e\u5dee\u7570\u304c\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u610f\u5473\u7684\u306b\u540c\u4e00\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u672a\u5909\u66f4\u3068\u3057\u3066\u8a8d\u8b58\u3055\u305b\u308b\u3082\u306e\u3067\u3059\u3002\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066\u3001Last-Modified \u3092\u3001\u4f8b\u3048\u3070\u30c7\u30fc\u30bf\u30ec\u30b3\u30fc\u30c9\u306e\u66f4\u65b0\u6642\u523b\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u91cd\u8981\uff1aETag \u3068 Last-Modified <em>\u540c\u6642\u306b<\/em> \u63d0\u4f9b\u3057\u3066\u304a\u3044\u3066\u3082\u640d\u306f\u306a\u3044\u2015\u2015\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3082\u306e\u3092\u9078\u3076\u306e\u3060\u304b\u3089\u3002.<\/p>\n\n<h2>Vary\u3092\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6df7\u4e71\u3092\u62db\u304b\u305a\u306b\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3092\u5b9f\u73fe<\/h2>\n<p><strong>\u53ef\u5909<\/strong> \u3069\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u30d8\u30c3\u30c0\u30fc\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u306b\u542b\u3081\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u79c1\u306f\u610f\u56f3\u7684\u306b\u300cVary\u300d\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3066\u3044\u307e\u3059\uff1a <em>Accept-Encoding<\/em> \u6a19\u6e96\u8a2d\u5b9a\uff08Gzip\/Brotli\uff09\u3067\u3059\u3001, <em>Accept-Language<\/em> \u79c1\u304c\u8a00\u8a9e\u306b\u7279\u5316\u3057\u305f\u56de\u7b54\u3092\u63d0\u4f9b\u3059\u308b\u5834\u5408\u306b\u9650\u308b\u3002From <em>Vary: User-Agent<\/em> \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u91cf\u304c\u7206\u767a\u7684\u306b\u5897\u3048\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u304a\u52e7\u3081\u3057\u307e\u305b\u3093\u3002\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u30af\u30c3\u30ad\u30fc\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u3080\u3057\u308d <strong>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8<\/strong> \u6216\u3044\u306f <strong>\u30ce\u30fc\u30b9\u30c8\u30a2<\/strong>, \u3001\u81a8\u5927\u306aVary\u30eb\u30fc\u30eb\u3092\u7ba1\u7406\u3059\u308b\u4ee3\u308f\u308a\u306b\u3002\u30a2\u30bb\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u53ef\u80fd\u306a\u9650\u308a\u4e0d\u8981\u306a\u30af\u30c3\u30ad\u30fc\u3092\u524a\u9664\u3057\u3066\u3001 <strong>\u516c\u958b<\/strong>-\u30a8\u30c3\u30b8\u3067\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6a5f\u80fd\u3057\u307e\u3059\u3002\u30d8\u30c3\u30c0\u30fc\u306b\u3088\u308bAPI\u8a8d\u8a3c\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001 <em>Vary: \u8a8d\u8a3c<\/em> \u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u7570\u306a\u308b\u30e6\u30fc\u30b6\u30fc\u306e\u5fdc\u7b54\u3092\u6df7\u5728\u3055\u305b\u308b\u306e\u3092\u9632\u3050\u2015\u2015\u305f\u3060\u3057\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u3053\u3053\u3067\u306f <strong>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8<\/strong> \u3088\u308a\u826f\u304f\u3001\u3088\u308a\u660e\u78ba\u306a\u9078\u629e\u3002.<\/p>\n<p>DevTools\u3067\u3001Vary\u304c\u610f\u56f3\u305b\u305a\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u304b\uff08\u4f8b\u3048\u3070\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u306b\u3088\u3063\u3066\uff09\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u3001\u300c\u7bc4\u56f2\u304c\u5e83\u3044\u300dVary\u306f\u30d2\u30c3\u30c8\u7387\u3092\u5927\u5e45\u306b\u4f4e\u4e0b\u3055\u305b\u308b\u304b\u3089\u3067\u3059\u3002\u610f\u56f3\u7684\u306b\u53b3\u9078\u3055\u308c\u305f\u5c11\u6570\u306e\u30d8\u30c3\u30c0\u30fc\u3067\u3042\u308c\u3070\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7ba1\u7406\u3057\u3084\u3059\u3044\u72b6\u614b\u306b\u4fdd\u3066\u3001 <strong>\u52b9\u7387\u7684<\/strong>.<\/p>\n\n<h2>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u7a2e\u985e\u5225\u6226\u7565<\/h2>\n<p>\u79c1\u306f\u3001\u9759\u7684\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u52d5\u7684\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53b3\u5bc6\u306b\u533a\u5225\u3057\u3001\u305d\u308c\u305e\u308c\u306e\u5229\u70b9\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 \u9759\u7684\u30a2\u30bb\u30c3\u30c8\u306b\u306f\u9577\u3044\u6709\u52b9\u671f\u9593\u3092\u8a2d\u5b9a\u3057\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u3088\u3063\u3066\u660e\u78ba\u306b\u8b58\u5225\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002HTML\u3084\u500b\u4eba\u5411\u3051\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u3064\u3044\u3066\u306f\u3001\u5909\u66f4\u304c\u8fc5\u901f\u306b\u53cd\u6620\u3055\u308c\u3001\u30c7\u30fc\u30bf\u304c\u8aa4\u3063\u305f\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u4fdd\u5b58\u3055\u308c\u306a\u3044\u3088\u3046\u3001\u3088\u308a\u614e\u91cd\u306a\u6271\u3044\u3068\u3057\u3066\u3044\u307e\u3059\u3002API\u306b\u3064\u3044\u3066\u306f\u3001\u5909\u66f4\u983b\u5ea6\u3084\u60c5\u5831\u306e\u6a5f\u5bc6\u6027\u306b\u5fdc\u3058\u3066\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6bb5\u968e\u7684\u306a\u5206\u985e\u306b\u3088\u308a\u3001 <strong>\u30b9\u30d4\u30fc\u30c9<\/strong> \u6a5f\u5bc6\u6027\u3092\u640d\u306a\u3046\u30ea\u30b9\u30af\u304c\u306a\u304f\u3001 <strong>\u6b63\u3057\u3055<\/strong>.<\/p>\n<p>\u4ee5\u4e0b\u306e\u8868\u3067\u306f\u3001\u5b9f\u7528\u7684\u306a\u8a2d\u5b9a\u3092\u307e\u3068\u3081\u3001\u305d\u306e\u5229\u70b9\u3092\u4e00\u76ee\u3067\u308f\u304b\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<table>\n  <thead>\n    <tr>\n      <th>\u30ea\u30bd\u30fc\u30b9\u30bf\u30a4\u30d7<\/th>\n      <th>\u30d8\u30c3\u30c0\u30fc\u306e\u4f8b<\/th>\n      <th>\u306a\u305c<\/th>\n      <th>\u30d2\u30f3\u30c8<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>CSS\uff0fJS\uff0f\u753b\u50cf\uff0f\u30d5\u30a9\u30f3\u30c8<\/td>\n      <td>\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1: public, max-age=31536000, immutable<\/td>\n      <td>\u9577\u671f\u9593\u306e\u4f7f\u7528\u306b\u3088\u308a <strong>\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>, \u30ea\u30af\u30a8\u30b9\u30c8\u6570\u304c\u6e1b\u5c11<\/td>\n      <td>\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u3092\u4ed8\u3051\u3066\u6574\u7406\u6574\u9813\u3059\u308b <strong>\u30ed\u30fc\u30ea\u30f3\u30b0<\/strong> \u66f4\u65b0\u60c5\u5831<\/td>\n    <\/tr>\n    <tr>\n      <td>HTML\u306f\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3055\u308c\u3066\u3044\u307e\u305b\u3093<\/td>\n      <td>Cache-Control: no-cache, must-revalidate (\u307e\u305f\u306f max-age=300)<\/td>\n      <td>\u8a71\u984c\u6027\u306f\u4f9d\u7136\u3068\u3057\u3066\u9ad8\u3044\u304c\u3001\u30c7\u30fc\u30bf\u91cf\u306f\u5c11\u306a\u3044<\/td>\n      <td>ETag\/Last-Modified \u3092\u4f7f\u3063\u305f\u7c21\u5358\u306a <strong>\u518d\u8a8d\u5b9a<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td>HTML\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/td>\n      <td>Cache-Control: private, no-cache, must-revalidate<\/td>\n      <td>\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u3078\u306e\u4fdd\u5b58\u306f\u884c\u308f\u306a\u3044<\/td>\n      <td>\u30bb\u30c3\u30b7\u30e7\u30f3\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3001 <strong>\u96e8\u6f0f\u308a<\/strong> \u907f\u3051\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>API\u306f\u9759\u7684\uff0f\u5909\u66f4\u983b\u5ea6\u304c\u4f4e\u3044<\/td>\n      <td>Cache-Control: public, max-age=3600<\/td>\n      <td>\u591a\u304f\u306e\u30b1\u30fc\u30b9\u3067\u9ad8\u3044\u7684\u4e2d\u7387 <strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/strong><\/td>\n      <td>\u983b\u7e41\u306a\u30c7\u30d7\u30ed\u30a4\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u3001\u67d4\u8edf\u6027\u3092\u4fdd\u3061\u307e\u3057\u3087\u3046<\/td>\n    <\/tr>\n    <tr>\n      <td>API\u306e\u52d5\u7684\u6027\u30fb\u611f\u5ea6\u304c\u9ad8\u3044<\/td>\n      <td>Cache-Control: no-store, max-age=0<\/td>\n      <td>\u6a5f\u5bc6\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306f\u884c\u308f\u306a\u3044<\/td>\n      <td>\u30c0\u30a4\u30ec\u30af\u30c8 <strong>\u5b9f\u969b<\/strong> \u30ea\u30b9\u30af\u306e\u4ee3\u308f\u308a\u306b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<p>\u753b\u50cf\u30ae\u30e3\u30e9\u30ea\u30fc\u3001\u5927\u898f\u6a21\u306aJS\u30d0\u30f3\u30c9\u30eb\u3001\u307e\u305f\u306fWeb\u30d5\u30a9\u30f3\u30c8\u306e\u5834\u5408\u3001max-age\u306e\u5024\u3092\u9577\u304f\u8a2d\u5b9a\u3057\u3066\u3082\u3059\u3050\u306b\u5143\u304c\u53d6\u308c\u307e\u3059\u3002\u305d\u306e\u969b\u3001\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u542b\u307e\u308c\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u6587\u5b57\u5217\u306b\u6ce8\u610f\u3092\u6255\u3044\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u53e4\u3044\u30d0\u30f3\u30c9\u30eb\u3092\u76ee\u306b\u3059\u308b\u3053\u3068\u306e\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 HTML\u306f\u7c21\u6f54\u306b\u4fdd\u3061\u3001\u518d\u691c\u8a3c\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u30c6\u30ad\u30b9\u30c8\u3084\u4fa1\u683c\u306e\u308f\u305a\u304b\u306a\u4fee\u6b63\u3067\u3042\u3063\u3066\u3082\u8fc5\u901f\u306b\u53cd\u6620\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002API\u306b\u3064\u3044\u3066\u306f\u3001\u5229\u7528\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3084\u5909\u66f4\u306e\u5fc5\u8981\u6027\u306b\u5fdc\u3058\u3066\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u9577\u671f\u7684\u306b <strong>\u8efd\u5feb\u306a<\/strong> \u30da\u30fc\u30b8\u30d3\u30e5\u30fc\u3092\u5897\u3084\u3057\u3001\u7bc0\u7d04\u3059\u308b <strong>\u5e2f\u57df\u5e45<\/strong>.<\/p>\n\n<h2>SPA \u5bfe MPA\uff1aHTML \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u77ed\u304f\u3001\u30a2\u30bb\u30c3\u30c8\u306f\u9577\u304f<\/h2>\n<p>\u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f <em>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9HTML<\/em> \u7279\u306b\u5bff\u547d\u304c\u77ed\u3044\uff08\u4f8b\uff1a. <code>no-cache\u3001must-revalidate<\/code> \u6216\u3044\u306f <code>max-age=60<\/code>) \u3068\u3044\u3046\u306e\u306f\u3001\u3053\u308c\u304c\u3069\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u30d0\u30f3\u30c9\u30eb\u304c\u8aad\u307f\u8fbc\u307e\u308c\u308b\u304b\u3092\u5236\u5fa1\u3059\u308b\u304b\u3089\u3067\u3059\u3002\u4e00\u65b9\u3001\u30d3\u30eb\u30c9\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30c1\u30e3\u30f3\u30af\u3001\u30d5\u30a9\u30f3\u30c8\u3001\u753b\u50cf\u306b\u306f\u53b3\u683c\u306a\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u304c\u65bd\u3055\u308c\u3066\u304a\u308a\u3001 <code>public, max-age=31536000, immutable<\/code>. \u3053\u308c\u306b\u3088\u308a\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9HTML\u304c\u66f4\u65b0\u3055\u308c\u305f\u65b0\u3057\u3044\u30ea\u30ea\u30fc\u30b9\u3067\u306f\u3001\u76f4\u3061\u306b\u6b63\u3057\u3044\u65b0\u3057\u3044\u30d5\u30a1\u30a4\u30eb\u540d\u304c\u53c2\u7167\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u3064\u3064\u3001\u65e2\u5b58\u306e\u30e6\u30fc\u30b6\u30fc\u306f <em>\u5927\u304d\u306a<\/em> \u30ed\u30fc\u30ab\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u30a2\u30bb\u30c3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u3002.<\/p>\n<p>\u30ad\u30e3\u30c3\u30b7\u30e5\u7834\u68c4\u3068\u3057\u3066\u306e\u30af\u30a8\u30ea\u6587\u5b57\u5217 (<code>?v=123<\/code>) \u306f\u3001\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u7c21\u5358\u306b\u5909\u66f4\u3067\u304d\u306a\u3044\u5834\u5408\u306e\u307f\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u610f\u306a\u30d5\u30a1\u30a4\u30eb\u540d\uff08\u30cf\u30c3\u30b7\u30e5\uff09\u306e\u65b9\u304c\u671b\u307e\u3057\u3044\u3067\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u3088\u308a\u660e\u78ba\u306b\u533a\u5206\u3067\u304d\u3001\u4f8b\u5916\u30b1\u30fc\u30b9\u3082\u5c11\u306a\u304f\u306a\u308b\u304b\u3089\u3067\u3059\u3002.<\/p>\n\n<h2>\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\uff1aApache \u3068 Nginx<\/h2>\n<p>Apache\u3067\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u3092\u305f\u3044\u3066\u3044 <strong>htaccess<\/strong>, \u3001mod_headers \u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u6709\u52b9\u3067\u3042\u308b\u5834\u5408\u306b\u9650\u308a\u307e\u3059\u3002\u9759\u7684\u30a2\u30bb\u30c3\u30c8\u306b\u306f\u9577\u3044\u6709\u52b9\u671f\u9593\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u304c\u3001HTML \u306b\u3064\u3044\u3066\u306f\u3088\u308a\u53b3\u683c\u306b\u6271\u3063\u3066\u3044\u307e\u3059\u3002Nginx \u3067\u306f\u3001\u3053\u308c\u3092 location \u30d6\u30ed\u30c3\u30af\u5185\u3067\u8a2d\u5b9a\u3057\u3066\u304a\u308a\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u3057\u3066 expires \u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u4f75\u7528\u3057\u3066\u3044\u307e\u3059\u3002 \u5909\u66f4\u3092\u884c\u3046\u305f\u3073\u306b\u3001DevTools\u306e\u300c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u300d\u30bf\u30d6\u3067\u5b9f\u969b\u306e\u30d8\u30c3\u30c0\u30fc\u5024\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089\u30c6\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u591a\u5927\u306a\u30b3\u30b9\u30c8\u3092\u4f34\u3046\u3088\u3046\u306a\u8aa4\u3063\u305f\u30eb\u30fc\u30eb\u3092\u9632\u3044\u3067\u3044\u307e\u3059\u3002 <strong>\u8aa4\u3063\u305f\u554f\u3044\u5408\u308f\u305b<\/strong> \u751f\u6210\u3059\u308b\u3002.<\/p>\n<pre><code># Apache (.htaccess)\n\n  \n    Header set Cache-Control \"public, max-age=31536000, immutable\"\n  \n\n  \n    Header set Cache-Control \"no-cache, must-revalidate\"\n<\/code><\/pre>\n<pre><code># Nginx\uff08\u30b5\u30fc\u30d0\u30fc\u30d6\u30ed\u30c3\u30af\uff09\nlocation ~* \\.(jpg|jpeg|png|gif|css|js|woff2?)$ {\n    expires 365d;\n    add_header Cache-Control \"public, immutable\";\n}\n\nlocation ~* \\.(html)$ {\n    add_header Cache-Control \"no-cache, must-revalidate\";\n}\n<\/code><\/pre>\n<p>\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u30b5\u30fc\u30d3\u30b9\u306b\u304a\u3044\u3066\u3001\u3053\u306e\u30d8\u30c3\u30c0\u30fc\u3068\u7af6\u5408\u3059\u308b\u30eb\u30fc\u30eb\u304c\u5b58\u5728\u3057\u306a\u3044\u3088\u3046\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u4e0a\u6d41\u306eCDN\u306f\u72ec\u81ea\u306eTTL\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u305f\u3081\u3001\u3053\u308c\u3092\u610f\u56f3\u7684\u306b\u5236\u5fa1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30ec\u30a4\u30e4\u30fc\u3067\u8a2d\u5b9a\u304c\u4e00\u81f4\u3057\u3066\u3044\u308c\u3070\u3001\u30ea\u30bd\u30fc\u30b9\u306f\u78ba\u5b9f\u306b\u6a5f\u80fd\u3057\u307e\u3059\u3002 <strong>\u691c\u7d22\u53ef\u80fd<\/strong> \u305d\u3057\u3066\u4e00\u8cab\u6027\u304c\u3042\u308b\u3002\u3053\u3053\u3067\u5165\u5ff5\u306b\u78ba\u8a8d\u3057\u3066\u304a\u3051\u3070\u3001\u9577\u5f15\u304f\u30c7\u30d0\u30c3\u30b0\u4f5c\u696d\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3061\u3087\u3063\u3068\u3057\u305f\u78ba\u8a8d\u304c\u3001\u5f8c\u3067\u5927\u304d\u306a\u624b\u9593\u3092\u7701\u3044\u3066\u304f\u308c\u308b <strong>\u6642\u9593<\/strong>.<\/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\/08\/futuristic-web-optimization-7643.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>CDN\u304a\u3088\u3073\u30d7\u30ed\u30ad\u30b7\u306e\u5b9f\u8df5\uff1as-maxage\u304a\u3088\u3073Stale\u6226\u7565\u306e\u8a2d\u5b9a<\/h2>\n<p>\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3064\u3044\u3066\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u306b\u4ee5\u4e0b\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 <em>S\u30de\u30af\u30b5\u30fc\u30b8\u30e5<\/em> \u304a\u3088\u3073Stale\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3002Apache\u306e\u4f8b\uff1a<\/p>\n<pre><code># Apache\uff1aCDN\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u30eb\u30fc\u30eb\n\n  \n    Header set Cache-Control \"public, max-age=600, s-maxage=86400, stale-while-revalidate=30, stale-if-error=600\"\n<\/code><\/pre>\n<p>\u305d\u3057\u3066Nginx\u3067\u306f\uff1a<\/p>\n<pre><code># Nginx\uff1a\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6700\u9069\u5316\nlocation ~* \\.(json|xml|map)$ {\n    add_header Cache-Control \"public, max-age=600, s-maxage=86400, stale-while-revalidate=30, stale-if-error=600\";\n}\n<\/code><\/pre>\n<p>\u591a\u304f\u306eCDN\u306f\u3001\u3053\u308c\u3089\u306e\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u76f4\u63a5\u53cd\u6620\u3057\u307e\u3059\u3002 \u3082\u3057\u30a8\u30c3\u30b8\u30ec\u30a4\u30e4\u30fc\u304c\u72ec\u81ea\u306e\u30d8\u30c3\u30c0\u30fc\uff08\u4f8b\u3048\u3070\u3001Surrogate\u30d8\u30c3\u30c0\u30fc\u306a\u3069\uff09\u3092\u671f\u5f85\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30ed\u30b8\u30c3\u30af\u3092\u30a8\u30c3\u30b8\u30ec\u30a4\u30e4\u30fc\u306b\u53cd\u6620\u3055\u305b\u3001\u30d6\u30e9\u30a6\u30b6\u3068\u5171\u6709\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6226\u7565\u3092\u660e\u78ba\u306b\u5206\u96e2\u3057\u3066\u3044\u307e\u3059\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u306e\u304a\u304b\u3052\u3067\u3001\u30d1\u30fc\u30b8\u3092\u884c\u3046\u5fc5\u8981\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3082\u3057\u5fc5\u8981\u306b\u306a\u3063\u305f\u5834\u5408\u306f\u3001\u7684\u3092\u7d5e\u3063\u305f\u5c0f\u898f\u6a21\u306a\u4ecb\u5165\u3068\u3057\u3066\u8a08\u753b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u7279\u5225\u306a\u30b1\u30fc\u30b9\uff1a\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3001\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\u3001\u304a\u3088\u3073\u30d5\u30a9\u30fc\u30e0\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/h2>\n<p><strong>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\uff1a<\/strong> \u4ed5\u69d8\u4e0a\u3001301\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u53ef\u80fd\u3067\u3059\u3002\u4e00\u6642\u7684\u306a\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\uff08302\/307\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001\u660e\u78ba\u306aTTL\u3092\u6307\u5b9a\u3059\u308b\u304b\u3001\u610f\u56f3\u7684\u306b <code>\u30ce\u30fc\u30b9\u30c8\u30a2<\/code>, \u3001\u4f55\u3082\u56fa\u5b9a\u5316\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3059\u3002\u6052\u4e45\u7684\u306a301\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u306f\u9069\u5ea6\u306aTTL\u3092\u8a2d\u5b9a\u3059\u3079\u304d\u3067\u3059\u3002\u305d\u3046\u3059\u308c\u3070\u3001\u5909\u66f4\u306f\u610f\u56f3\u7684\u304b\u3064\u8abf\u6574\u3055\u308c\u305f\u63aa\u7f6e\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>\u30a8\u30e9\u30fc\u30da\u30fc\u30b8\uff1a<\/strong> 404\/410\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u4e00\u6642\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u304d\u307e\u3059\uff08\u4f8b\uff1a. <code>max-age=60<\/code>)\u3001\u30dc\u30c3\u30c8\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u3067\u3059\u3002500\u30b7\u30ea\u30fc\u30ba\u306e\u5834\u5408\u3001\u74b0\u5883\u306b\u5fdc\u3058\u3066 <code>\u3082\u3057\u30a8\u30e9\u30fc\u306a\u3089<\/code> \u30e6\u30fc\u30b6\u30fc\u304c\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3088\u308a\u3082\u3001\u53e4\u304f\u3066\u3082\u6b63\u5e38\u306b\u52d5\u4f5c\u3059\u308b\u30da\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3092\u597d\u3080\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3001\u3053\u306e\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><strong>\u6295\u7a3f\uff0f\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff1a<\/strong> POST\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u3059\u308b\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u3001\u901a\u5e38\u3001\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u901a\u5e38\u901a\u308a\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u307e\u305b\u3093\u3002\u500b\u4eba\u30c7\u30fc\u30bf\u3092\u542b\u3080\u30d5\u30a1\u30a4\u30eb\u306e\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\uff08\u4f8b\uff1a\u8acb\u6c42\u66f8\uff09\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f\u4e00\u8cab\u3057\u3066 <code>\u30ce\u30fc\u30b9\u30c8\u30a2<\/code> \u3055\u3089\u306b\u3001\u8aa4\u3063\u3066\u30c7\u30fc\u30bf\u304c\u6b8b\u7559\u3057\u306a\u3044\u3088\u3046\u3001\u5b89\u5168\u306a\u914d\u4fe1\uff08\u4f8b\uff1aContent-Disposition\uff09\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u3055\u308c\u3066\u3044\u306a\u3044\u5927\u5bb9\u91cf\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff08\u4f8b\uff1a\u30ea\u30ea\u30fc\u30b9\u7248\uff09\u306b\u3064\u3044\u3066\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u9577\u671f\u9593\u6709\u52b9\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u304c\u9069\u5207\u3067\u3059\u3002.<\/p>\n\n<h2>\u5178\u578b\u7684\u306a\u30df\u30b9\u3092\u907f\u3051\u308b<\/h2>\n<p>\u591a\u304f\u306e\u4eba\u304c\u6df7\u540c\u3057\u3066\u3057\u307e\u3046 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u3057<\/strong> \u300c\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4e00\u5207\u884c\u308f\u306a\u3044\u300d\u8a2d\u5b9a\u306f\u3001\u4e0d\u5fc5\u8981\u306a\u8ca0\u8377\u3092\u62db\u304d\u307e\u3059\u3002\u6b63\u3057\u304f\u89e3\u91c8\u3059\u308c\u3070\u3001no-cache \u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u8a31\u53ef\u3057\u3064\u3064\u3001\u518d\u691c\u8a3c\u3092\u8981\u6c42\u3059\u308b\u3082\u306e\u3067\u3059\u3002 \u3082\u30461\u3064\u306e\u5178\u578b\u7684\u306a\u4f8b\u306f\u3001CSS\u3084JS\u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3092\u884c\u308f\u305a\u306bmax-age\u306e\u5024\u3092\u9577\u304f\u8a2d\u5b9a\u3057\u3001\u53e4\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u4fdd\u6301\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3067\u3059\u3002HTML\u3068\u9759\u7684\u30a2\u30bb\u30c3\u30c8\u306e\u5206\u96e2\u304c\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3068\u3001HTML\u306f\u7a4d\u6975\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u3053\u3068\u304c\u7a00\u3067\u3042\u308b\u305f\u3081\u3001\u901f\u5ea6\u306e\u9762\u3067\u640d\u3092\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u7121\u8996\u3059\u308b\u3068\u3001\u30b5\u30a4\u30c8\u306e <strong>\u30e6\u30fc\u30b6\u30fc\u30fb\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9<\/strong> \u3088\u308a\u3002<\/p>\n<p>\u30b5\u30fc\u30d0\u30fc\u3001CDN\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u9593\u306e\u7af6\u5408\u306f\u3001\u6c17\u3065\u304b\u308c\u306a\u3044\u3046\u3061\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u52b9\u679c\u3092\u640d\u306a\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30d8\u30c3\u30c0\u30fc\u304c\u300c\u307e\u308b\u3067\u5e7d\u970a\u306e\u624b\u306b\u3088\u3063\u3066\u300d\u5909\u66f4\u3055\u308c\u305f\u304b\u306e\u3088\u3046\u306b\u898b\u3048\u308b\u5834\u5408\u306f\u3001\u4e0a\u66f8\u304d\u3084\u4e2d\u9593\u5c64\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u3053\u3067\u306f\u3001\u30ed\u30b8\u30c3\u30af\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u9023\u9396\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u3067\u3001\u8aa4\u3063\u305f\u512a\u5148\u9806\u4f4d\u3092\u7a81\u304d\u6b62\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u7c21\u6f54\u306a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3068\u3001\u3053\u308c\u306b\u95a2\u9023\u3059\u308b\u5178\u578b\u7684\u306a\u843d\u3068\u3057\u7a74\u306b\u3064\u3044\u3066 <a href=\"https:\/\/webhosting.de\/ja\/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\/\">\u30ad\u30e3\u30c3\u30b7\u30e5\u30d8\u30c3\u30c0\u306e\u59a8\u5bb3<\/a> \u7ba1\u7406\u3092\u5bb9\u6613\u306b\u3059\u308b\u3002\u660e\u78ba\u306a\u512a\u5148\u9806\u4f4d\u306f\u3001\u4ee5\u4e0b\u306e\u4e8b\u614b\u3092\u9632\u3050\u3002 <strong>\u526f\u4f5c\u7528<\/strong> \u30c7\u30d7\u30ed\u30a4\u30e1\u30f3\u30c8\u306b\u304a\u3044\u3066\u3002.<\/p>\n\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u3092\u5b9a\u91cf\u5316\u3059\u308b<\/h2>\n<p>\u79c1\u306f\u3001TTFB\u3001LCP\u3001\u304a\u3088\u3073 <strong>\u30ea\u30af\u30a8\u30b9\u30c8<\/strong> \u30da\u30fc\u30b8\u30d3\u30e5\u30fc\u3042\u305f\u308a\u3002 DevTools\u3092\u78ba\u8a8d\u3059\u308c\u3070\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u300c\u30c7\u30a3\u30b9\u30af\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u300d\u304b\u300c\u30e1\u30e2\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u300d\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002Lighthouse\u3084WebPageTest\u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u9069\u5207\u306b\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u79c1\u306f\u5909\u66f4\u306e\u524d\u5f8c\u3067\u6e2c\u5b9a\u3092\u884c\u3044\u3001\u5b9f\u969b\u306e\u6539\u5584\u52b9\u679c\u3092\u660e\u78ba\u306b\u628a\u63e1\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5fb9\u5e95\u3057\u305f\u53d6\u308a\u7d44\u307f\u304c\u3001\u6700\u9069\u5316\u3092 <strong>\u308f\u304b\u308a\u3084\u3059\u3044<\/strong> \u305d\u3057\u3066\u3001\u76ee\u7684\u610f\u8b58\u3092\u6301\u3063\u3066\u3002.<\/p>\n<p>\u7279\u306b\u5927\u304d\u306a\u753b\u50cf\u3001Web\u30d5\u30a9\u30f3\u30c8\u3001\u304a\u3088\u3073\u30d0\u30f3\u30c9\u30eb\u306f\u3001\u518d\u30a2\u30af\u30bb\u30b9\u6642\u306b\u518d\u8aad\u307f\u8fbc\u307f\u3055\u308c\u306a\u3044\u305f\u3081\u3001\u305d\u306e\u52b9\u679c\u304c\u9855\u8457\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001HTML\u306f\u30b5\u30fc\u30d0\u30fc\u306b\u8fd1\u3044\u5834\u6240\u306b\u4fdd\u6301\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u65b0\u3057\u3044\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8fc5\u901f\u306b\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u983b\u7e41\u306b\u5229\u7528\u3055\u308c\u308b\u30eb\u30fc\u30c8\u306b\u9069\u5ea6\u306aTTL\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001API\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u8457\u3057\u304f\u5411\u4e0a\u3057\u307e\u3059\u3002 \u305d\u306e\u7d50\u679c\u3001\u8aad\u307f\u8fbc\u307f\u6642\u9593\u306e\u77ed\u7e2e\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u91cf\u306e\u524a\u6e1b\u3001\u305d\u3057\u3066\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u306e\u4f4e\u6e1b\u3068\u3044\u3046\u52b9\u679c\u304c\u73fe\u308c\u307e\u3059\u3002\u3053\u308c\u3092\u5fb9\u5e95\u7684\u306b\u691c\u8a3c\u3059\u308c\u3070\u3001\u9577\u671f\u7684\u306a\u30b3\u30b9\u30c8\u524a\u6e1b\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002 <strong>\u30ea\u30bd\u30fc\u30b9<\/strong>.<\/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\/08\/WebOptimierung4102.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u3068HTTP\u30ad\u30e3\u30c3\u30b7\u30e5\uff1a\u4e92\u3044\u306b\u5e72\u6e09\u3055\u305b\u306a\u3044<\/h2>\n<p>\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u6226\u7565\u306f\u79c1\u306eHTTP\u30d8\u30c3\u30c0\u30fc\u3068\u4e00\u81f4\u3057\u3066\u3044\u307e\u3059\u3002\u9759\u7684\u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\u3055\u308c\u305f\u30a2\u30bb\u30c3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001\u9577\u3044TTL\u3092\u4f34\u3046\u300ccache-first\u300d\u304c\u9069\u3057\u3066\u304a\u308a\u3001 <em>\u4e0d\u5909<\/em> \u7d20\u6674\u3089\u3057\u3044\u3067\u3059\u306d\u3002HTML\u3084\u983b\u7e41\u306b\u66f4\u65b0\u3055\u308c\u308bAPI\u30c7\u30fc\u30bf\u306b\u3064\u3044\u3066\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u7d20\u65e9\u304f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u78ba\u8a8d\u3067\u304d\u3001\u6700\u65b0\u60c5\u5831\u304c\u30bf\u30a4\u30e0\u30ea\u30fc\u306b\u53cd\u6620\u3055\u308c\u308b\u3088\u3046\u3001\u300cnetwork-first\u300d\u307e\u305f\u306f\u300cstale-while-revalidate\u300d\u3092\u512a\u5148\u3057\u3066\u3044\u307e\u3059\u3002 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<code>Cache-Control: no-cache<\/code> \u306b\u65bc\u3044\u3066 <em>\u30ea\u30af\u30a8\u30b9\u30c8<\/em> \u30b5\u30fc\u30d0\u30fc\u3067\u306e\u518d\u691c\u8a3c\u3092\u5f37\u5236\u3057\u3001, <code>max-age=0<\/code> \u4f3c\u305f\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002. <code>\u30ce\u30fc\u30b9\u30c8\u30a2<\/code> \u30ea\u30af\u30a8\u30b9\u30c8\u5185\u3067\u3001\u30c1\u30a7\u30fc\u30f3\u4e0a\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4fdd\u5b58\u3092\u7981\u6b62\u3057\u307e\u3059\u3002\u30aa\u30d5\u30e9\u30a4\u30f3\u306e\u5834\u5408\u306b\u306f\u3001 <code>\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306e\u307f<\/code> 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height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<p>\u307e\u305a\u306f\u73fe\u72b6\u628a\u63e1\u304b\u3089\u59cb\u3081\u307e\u3059\u3002\u3069\u306e\u3088\u3046\u306a\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u304c\u3042\u308b\u306e\u304b\u3001\u3069\u308c\u304c\u500b\u4eba\u5411\u3051\u306e\u3082\u306e\u304b\u3001\u3069\u308c\u304c\u3081\u3063\u305f\u306b\u66f4\u65b0\u3055\u308c\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30a2\u30bb\u30c3\u30c8\u304c\u9577\u671f\u306b\u308f\u305f\u308a <strong>\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong> 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href=\"https:\/\/webhosting.de\/ja\/%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%e3%82%92%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0http%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5\/\">\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\u306e\u6226\u7565<\/a> 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