{"id":19417,"date":"2026-05-16T18:21:28","date_gmt":"2026-05-16T16:21:28","guid":{"rendered":"https:\/\/webhosting.de\/webhosting-progressive-web-apps-service-worker-futurecloud\/"},"modified":"2026-05-16T18:21:28","modified_gmt":"2026-05-16T16:21:28","slug":"%e3%82%a6%e3%82%a7%e3%83%96%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%97%e3%83%ad%e3%82%b0%e3%83%ac%e3%83%83%e3%82%b7%e3%83%96%e3%83%bb%e3%82%a6%e3%82%a7%e3%83%96%e3%83%bb%e3%82%a2","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/webhosting-progressive-web-apps-service-worker-futurecloud\/","title":{"rendered":"\u30d7\u30ed\u30b0\u30ec\u30c3\u30b7\u30d6Web\u30a2\u30d7\u30ea\u306eWeb\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\uff1a\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u3092\u6b63\u3057\u304f\u30c7\u30d7\u30ed\u30a4\u3059\u308b"},"content":{"rendered":"<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d8\u30c3\u30c0\u3068\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\uff1a\u5b89\u5b9a\u3057\u305fPWA\u306e\u57fa\u790e<\/h2>\n\n<p>\u7d14\u7c8b\u306a 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 <li>CSP: \u53b3\u5bc6\u306a\u30bd\u30fc\u30b9\u3001\u30ef\u30fc\u30ab\u30fc\u3068\u30d5\u30a7\u30c3\u30c1\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306e\u660e\u78ba\u306a\u30eb\u30fc\u30eb<\/li>\n  <li>\u7d39\u4ecb\u8005\u30dd\u30ea\u30b7\u30fc\uff1a\u7d4c\u6e08\u7684\u306a\u767a\u4fe1\u5143\u60c5\u5831\u306e\u8ee2\u9001<\/li>\n  <li>\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30ea\u30b7\u30fc\uff1a\u5fc5\u8981\u306a\u30d6\u30e9\u30a6\u30b6API\u306e\u307f\u3092\u6709\u52b9\u306b\u3059\u308b<\/li>\n  <li>X-Content-Type-Options\u3068\u6b63\u3057\u3044MIME\u30bf\u30a4\u30d7\uff1a\u30af\u30ea\u30fc\u30f3\u306a\u89e3\u91c8<\/li>\n  <li>HSTS: HTTPS\u3092\u5f37\u5236\u3059\u308b\u3002 <strong>\u30b5\u30fc\u30d3\u30b9\u30fb\u30ef\u30fc\u30ab\u30fc<\/strong><\/li>\n<\/ul>\n\n<h2>\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3068\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u6226\u7565<\/h2>\n\n<p>\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c2\u3064\u306e\u4e16\u754c\u306e\u9593\u3067\u7acb\u3061\u5f80\u751f\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u306b\u3001\u660e\u78ba\u306b\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u610f\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u3044\u3001Activate \u30a4\u30d9\u30f3\u30c8\u4e2d\u306b\u53e4\u3044\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u524a\u9664\u3057\u3001skipWaiting \u3092\u4f7f\u3046\u304b UI \u3067\u306e\u78ba\u8a8d\u3092\u5f85\u3064\u304b\u3092\u610f\u8b58\u7684\u306b\u6c7a\u3081\u3066\u3044\u307e\u3059\u3002\u30ea\u30b9\u30ad\u30fc\u306a\u30ea\u30ea\u30fc\u30b9\u306e\u5834\u5408\u3001\u79c1\u306f\u300c\u30bd\u30d5\u30c8\u300d\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u597d\u307f\u307e\u3059\u3002\u65b0\u3057\u3044\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u306f\u305d\u308c\u81ea\u8eab\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u304c\u3001\u53e4\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u306a\u304f\u306a\u308b\u307e\u3067\u5f85\u3061\u307e\u3059\u3002\u524d\u306e\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u3092\u5229\u7528\u53ef\u80fd\u306a\u72b6\u614b\u306b\u3057\u3066\u304a\u304d\u3001\u30a2\u30c8\u30df\u30c3\u30af\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u3067\u3001\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3072\u3068\u3064\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u66f4\u65b0\u3092\u3059\u3050\u306b\u5f15\u304d\u51fa\u305b\u308b\u3088\u3046\u306b\u3001\u30b5\u30fc\u30d3\u30b9 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<li>\u30b5\u30fc\u30d0\u30fc\u4e0a\u306e\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u30d5\u30a1\u30a4\u30eb\u3092\u7a4d\u6975\u7684\u306b\u518d\u691c\u8a3c\u3059\u308b\u3002<\/li>\n<\/ul>\n\n<h2>\u30ad\u30e3\u30c3\u30b7\u30e5\u30e6\u30cb\u30c3\u30c8\uff1a\u30cf\u30c3\u30b7\u30e5\u3001\u4e0d\u5909\u30c7\u30fc\u30bf\u3001\u671f\u9650\u5207\u308c\u30c7\u30fc\u30bf<\/h2>\n\n<p>\u5909\u3048\u3089\u308c\u306a\u3044\u3082\u306e <strong>\u8cc7\u7523<\/strong> 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 <li>\u8cc7\u7523\u306e\u30cf\u30c3\u30b7\u30e5\u5316\uff0b\u30ad\u30e3\u30c3\u30b7\u30e5\u5236\u5fa1\uff1a\u6700\u5927\u5e74\u9f62\u304c\u9ad8\u3044\uff0b\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb<\/li>\n  <li>HTML\/Manifest\/SW: \u77ed\u3044TTL\u3001\u9ad8\u901f\u66f4\u65b0\u306e\u305f\u3081\u306eETag\/Last-Modified<\/li>\n  <li>\u30d7\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u30e9\u30f3\u30bf\u30a4\u30e0\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5206\u96e2\uff08\u660e\u793a\u7684\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u542b\u3080<\/li>\n  <li>\u30c7\u30fc\u30bf\u578b\u3054\u3068\u306e\u5fae\u8abf\u6574\uff1a\u30d5\u30a9\u30f3\u30c8\/\u753b\u50cf\u30ed\u30f3\u30b0\u3001API\u30b7\u30e7\u30fc\u30c8<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/serverraum-webhosting-4758.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>CDN\/\u30a8\u30c3\u30b8\u306e\u30af\u30ea\u30fc\u30f3\u306a\u9023\u52d5\uff1a\u30aa\u30ea\u30b8\u30f3\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u7121\u52b9\u5316<\/h2>\n\n<p>CDN \u3092\u4f7f\u3046\u5834\u5408\u306f\u3001\u30a8\u30c3\u30b8\u3068\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u8abf\u548c\u3055\u305b\u307e\u3059\u3002ETags \u3068 last-modified \u306f\u4e0d\u8981\u306a\u8ee2\u9001\u3092\u7701\u304f\u306e\u306b\u5f79\u7acb\u3061\u3001\u30af\u30ea\u30a2\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30ad\u30fc (\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3001\u8a00\u8a9e\u3092\u542b\u3080) \u306f\u30d0\u30ea\u30a2\u30f3\u30c8\u3092\u6b63\u3057\u304f\u5206\u96e2\u3057\u307e\u3059\u3002\u30a8\u30c3\u30b8\u3067\u77ed\u3044TTL\u3092\u53d7\u3051\u53d6\u308b\u304b\u3001\u7121\u52b9\u5316\u306b\u3088\u3063\u3066\u3059\u3050\u306b\u66f4\u65b0\u3055\u308c\u307e\u3059\u3002API\u306b\u3064\u3044\u3066\u306f\u3001\u30a8\u30c3\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u7206\u767a\u3057\u306a\u3044\u3088\u3046\u306b\u3001Vary\u30d8\u30c3\u30c0\u3092\u6ce8\u610f\u6df1\u304f\u8abf\u6574\u3059\u308b\u3002\u79c1\u306f\u30ea\u30ea\u30fc\u30b9\u3054\u3068\u306b\u7121\u52b9\u5316\u30ea\u30b9\u30c8\u3092\u8a08\u753b\u3057\u3001\u30a8\u30c3\u30b8\u30ce\u30fc\u30c9\u304c\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u3088\u3046\u306b\u30ed\u30fc\u30ea\u30f3\u30b0\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u305f\u3081\u306e\u6c7a\u5b9a\u8ad6\u7684\u306a\u30d1\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u30a8\u30c3\u30b8\u3067\u306eHTTP\/3\u306b\u3088\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u304c\u3088\u308a\u5805\u7262\u306b\u7de9\u548c\u3055\u308c\u308b\u305f\u3081\u3001PWA\u306f\u7279\u306b\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u6069\u6075\u3092\u53d7\u3051\u308b\u3002.<\/p>\n\n<h2>\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u30aa\u30d5\u30e9\u30a4\u30f3\u30c7\u30fc\u30bf\uff1a\u30af\u30a9\u30fc\u30bf\u3001\u9000\u53bb\u3001\u30c7\u30fc\u30bf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/h2>\n\n<p>PWA\u306f\u30ed\u30fc\u30ab\u30eb\u30fb\u30e1\u30e2\u30ea\u3067\u52d5\u4f5c\u3059\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u79c1\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30af\u30a9\u30fc\u30bf\u3068\u524a\u9664\u6226\u7565\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u308b\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u30b9\u30c8\u30ec\u30fc\u30b8\u3001IndexedDB\u3001StorageManager\u306f\u3001\u5229\u7528\u53ef\u80fd\u306a\u5bb9\u91cf\u3068\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u4f55\u304c\u6700\u521d\u306b\u98db\u3076\u304b\u3092\u6559\u3048\u3066\u304f\u308c\u307e\u3059\u3002\u79c1\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30eb\u30fc\u30c8\u3001\u30e1\u30c7\u30a3\u30a2\u3001API\u30c7\u30fc\u30bf\u3092\u7121\u99c4\u306e\u306a\u3044\u72b6\u614b\u306b\u4fdd\u3061\u3001Activate\u30a4\u30d9\u30f3\u30c8\u4e2d\u306b\u7a4d\u6975\u7684\u306b\u6574\u7406\u3057\u3001\u7121\u79e9\u5e8f\u306a\u5897\u52a0\u3092\u907f\u3051\u308b\u3002\u69cb\u9020\u5316\u3055\u308c\u305f\u30aa\u30d5\u30e9\u30a4\u30f3\u30fb\u30c7\u30fc\u30bf\u306b\u306fIndexedDB\u3092\u4f7f\u7528\u3057\u3001\u5927\u304d\u306a\u30d0\u30a4\u30ca\u30ea\u30fb\u30d5\u30a1\u30a4\u30eb\u306f\u9078\u629e\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u304a\u304f\u3002JSON\u3092\u30b3\u30f3\u30d1\u30af\u30c8\u306b\u4fdd\u3061\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30c7\u30eb\u30bf\u66f4\u65b0\u3092\u884c\u3044\u3001\u8ee2\u9001\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u8ca0\u8377\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002.<\/p>\n\n<ul>\n  <li>\u30ce\u30eb\u30de\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u5b9a\u671f\u7684\u306b\u5728\u5eab\u30c7\u30fc\u30bf\u3092\u6d88\u53bb\u3059\u308b<\/li>\n  <li>\u69cb\u9020\u5316\u30c7\u30fc\u30bf\u306b\u306fIndexedDB\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u306f <strong>\u8cc7\u7523<\/strong><\/li>\n  <li>\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u6226\u7565: \u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u30fc\u753b\u50cf\u3001\u6700\u5f8c\u306e\u65e2\u77e5\u306eAPI\u30ec\u30b9\u30dd\u30f3\u30b9<\/li>\n  <li>iOS\u3067\u306f\u7a4d\u6975\u7684\u306a\u7acb\u3061\u9000\u304d\u306b\u3088\u308a\u3001\u30e1\u30e2\u30ea\u306e\u4f7f\u7528\u306b\u6ce8\u610f\u304c\u5fc5\u8981<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/webhosting_pwa_meeting_8375.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u6a5f\u80fd\uff1aiOS\u3001Android\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7<\/h2>\n\n<p>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u3088\u3063\u3066\u6a5f\u80fd\u306f\u7570\u306a\u308b\u3002iOS\u3067\u306f\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u540c\u671f\u3068\u30d7\u30c3\u30b7\u30e5\u306f\u9650\u3089\u308c\u305f\u7bc4\u56f2\u3067\u3057\u304b\u5229\u7528\u3067\u304d\u305a\u3001\u30e1\u30e2\u30ea\u89e3\u653e\u304c\u983b\u7e41\u306b\u8d77\u3053\u308b\u305f\u3081\u3001\u79c1\u306f\u5805\u7262\u306a\u30a2\u30d7\u30ea\u30b7\u30a7\u30eb\u306b\u983c\u3063\u3066\u3044\u308b\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u30b9\u30bf\u30fc\u30c8\u753b\u9762\u304c\u304d\u308c\u3044\u306b\u898b\u3048\u308b\u3088\u3046\u306b\u3001\u30a2\u30a4\u30b3\u30f3\u3068\u30b9\u30d7\u30e9\u30c3\u30b7\u30e5\u30fb\u30b9\u30af\u30ea\u30fc\u30f3\u306e\u30b5\u30a4\u30ba\u3092\u614e\u91cd\u306b\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30f3\u30c9\u30ed\u30a4\u30c9\u3068\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u3067\u306f\u3001\u3055\u3089\u306b\u8e0f\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u308b\uff1a\u5b9a\u671f\u7684\u306a\u540c\u671f\u3001\u3088\u308a\u5e83\u7bc4\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u8c4a\u5bcc\u306a\u901a\u77e5\u306f\u5229\u4fbf\u6027\u3092\u9ad8\u3081\u307e\u3059\u3002\u79c1\u306f\u5e38\u306b\u30c7\u30d0\u30a4\u30b9\u56fa\u6709\u306e\u30d5\u30ed\u30fc\u3092\u30c6\u30b9\u30c8\u3057\u3066\u3044\u308b\uff1a\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3001\u30db\u30fc\u30e0\u753b\u9762\u306b\u8ffd\u52a0\u3001\u66f4\u65b0\u901a\u77e5\u3001\u6a5f\u5185\u30e2\u30fc\u30c9\u3067\u306e\u30aa\u30d5\u30e9\u30a4\u30f3\u52d5\u4f5c\u3002\u30b9\u30b3\u30fc\u30d7\u3082\u91cd\u8981\u3067\u3059\u3002\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u3092\u30a6\u30a7\u30d6\u30eb\u30fc\u30c8\u306e\u8fd1\u304f\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u591a\u304f\u306e\u30eb\u30fc\u30c8\u3092\u30ab\u30d0\u30fc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u610f\u56f3\u7684\u306b\u30b9\u30b3\u30fc\u30d7\u3092\u72ed\u304f\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30b5\u30d6\u30d5\u30a9\u30eb\u30c0\u3092\u4f7f\u7528\u3057\u3001\u30d1\u30b9\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u69cb\u9020\u3068\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30eb\u30fc\u30c8\u3001SSR\u3001App Shell\uff1a\u30b7\u30fc\u30e0\u30ec\u30b9\u306a\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3<\/h2>\n\n<p>\u7d20\u65e9\u3044\u521d\u671f\u53cd\u5fdc\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u30a2\u30d7\u30ea\u30b7\u30a7\u30eb\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\uff08SSR\uff09\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u308b\u3002\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u3092\u3059\u3050\u306b\u958b\u59cb\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u304c\u30b7\u30a7\u30eb\u3092\u4e8b\u524d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002SSR\u306f\u65e9\u671f\u306b\u76ee\u306b\u898b\u3048\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u63d0\u4f9b\u3057\u3001time-to-first-byte\u3068indexability\u306e\u4e21\u65b9\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001SSR\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30cf\u30a4\u30c9\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u306f\u3001\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u306e\u6709\u7528\u306a\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\uff1a\u30c7\u30fc\u30bf\u304c\u6b20\u843d\u3057\u305f\u5834\u5408\u3001\u30a2\u30d7\u30ea\u306e\u30b7\u30a7\u30eb\u306f\u518d\u8aad\u307f\u8fbc\u307f\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u3042\u308b\u89aa\u5207\u306a\u7a7a\u767d\u306e\u30d3\u30e5\u30fc\u3092\u8868\u793a\u3059\u308b\u3002\u30eb\u30fc\u30c8\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u306f\u5dee\u5225\u5316\u3055\u308c\u305f\u6226\u7565\u3092\u4f7f\u3063\u3066\u3044\u308b\uff1a\u9759\u7684\u30da\u30fc\u30b8\u304c\u6700\u521d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u6700\u521d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3001\u691c\u7d22\u7d50\u679c\u306f\u65b0\u3057\u3044\u7d50\u679c\u304c\u3059\u3050\u306b\u7d9a\u304f\u3088\u3046\u306bstale-while-revalidate\u3055\u308c\u308b\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\/05\/webhosting-pwa-service-worker-3467.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3068\u89b3\u6e2c\u53ef\u80fd\u6027\uff1a\u30e1\u30c8\u30ea\u30af\u30b9\u304b\u3089\u30e1\u30b8\u30e3\u30fc\u3078<\/h2>\n\n<p>\u79c1\u306f\u3001LCP\u3001FID\/INP\u3001CLS\u3001\u304a\u3088\u3073\u7279\u5b9a\u306ePWA\u30e1\u30c8\u30ea\u30af\u30b9\u3092\u4e2d\u5fc3\u306b\u3001\u30ea\u30a2\u30eb\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\uff08RUM\uff09\u3092\u6e2c\u5b9a\u3057\u3066\u3044\u307e\u3059\uff1a\u30aa\u30d5\u30e9\u30a4\u30f3\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30b7\u30a7\u30a2\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3068\u30a2\u30af\u30c6\u30a3\u30d9\u30fc\u30b7\u30e7\u30f3\u30a4\u30d9\u30f3\u30c8\u306e\u7d99\u7d9a\u6642\u9593\u3001\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u304b\u3089\u306e\u30d5\u30a7\u30c3\u30c1\u6642\u306e\u30a8\u30e9\u30fc\u3002\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u306f\u3001TTFB\u3001\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u5225\u306e\u6642\u9593\u6319\u52d5\uff08HTTP\/2\/3\uff09\u3001\u5727\u7e2e\u7387\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d8\u30c3\u30c0\u3084CSP\u9055\u53cd\u306b\u95a2\u3059\u308b\u30ec\u30dd\u30fc\u30c8\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u524d\u306b\u30ae\u30e3\u30c3\u30d7\u3092\u57cb\u3081\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30b5\u30fc\u30d3\u30b9\u30fb\u30ef\u30fc\u30ab\u30fc\u3067\u306f\u3001\u904e\u5270\u306aIO\u3068\u96c6\u7d04\u3055\u308c\u305f\u30a8\u30e9\u30fc\u30fb\u30d1\u30bf\u30fc\u30f3\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u7279\u306b\uff08\u30b5\u30f3\u30d7\u30eb\u30fb\u30d9\u30fc\u30b9\u306e\uff09\u30ed\u30b0\u3092\u8a18\u9332\u3057\u3066\u3044\u307e\u3059\uff1a\u4f8b\u3048\u3070\u3001\u7279\u5b9a\u306e\u30eb\u30fc\u30c8\u3067\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3084\u3001\u30ea\u30ea\u30fc\u30b9\u5f8c\u306e\u4e00\u8cab\u6027\u306e\u306a\u3044\u30ad\u30e3\u30c3\u30b7\u30e5\u30fb\u30d2\u30c3\u30c8\u306a\u3069\u3067\u3059\u3002\u30a2\u30af\u30b7\u30e7\u30f3\u30d7\u30e9\u30f3\u306f\u91cd\u8981\u3060\uff1a\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387\u304c\u4f4e\u4e0b\u3057\u305f\u3089\u3001\u30c7\u30d7\u30ed\u30a4\u306b\u7570\u5e38\u5024\u304c\u306a\u3044\u304b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30d5\u30a7\u30fc\u30ba\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u3059\u304e\u305f\u3089\u3001\u30d7\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u30b9\u30b3\u30fc\u30d7\u3068\u5727\u7e2e\u3092\u8abf\u3079\u308b\u3002.<\/p>\n\n<ul>\n  <li>RUM\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u30e1\u30c8\u30ea\u30af\u30b9\u306e\u76f8\u95a2\uff08LCP\u5bfeTTFB\/\u5727\u7e2e\u306a\u3069\uff09<\/li>\n  <li>CSP\/\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30d8\u30c3\u30c0\u30fc\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u7a4d\u6975\u7684\u306b\u5229\u7528\u3059\u308b<\/li>\n  <li>\u30b5\u30fc\u30d3\u30b9\u30fb\u30ef\u30fc\u30ab\u30fc\u3067\u306e\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3067\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u56de\u907f<\/li>\n  <li>\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u3068\u3057\u304d\u3044\u5024\u304a\u3088\u3073\u30a2\u30e9\u30fc\u30c8\u306e\u30ea\u30f3\u30af<\/li>\n<\/ul>\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\/05\/WebhostingPWA_Nachtarbeit_3186.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30d3\u30eb\u30c9\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3001\u30c6\u30b9\u30c8\u30ab\u30d0\u30ec\u30c3\u30b8\u3001\u6a5f\u80fd\u30d5\u30e9\u30b0<\/h2>\n\n<p>\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3067\u5b89\u5b9a\u3057\u305f\u30b5\u30fc\u30d3\u30b9\u30ef\u30fc\u30ab\u30fc\u304c\u4f5c\u3089\u308c\u308b\uff1a\u518d\u73fe\u53ef\u80fd\u306a\u30d3\u30eb\u30c9\u3092\u884c\u3044\u3001\u4efb\u610f\u3067\u6210\u679c\u7269\u306b\u7f72\u540d\u3057\u3001\u6c7a\u5b9a\u8ad6\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u30ea\u30ea\u30fc\u30b9\u524d\u306b\u3001\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u3001\u30d8\u30c3\u30c0\u30fc\u3001\u5727\u7e2e\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3001\u30d7\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u30ea\u30b9\u30c8\u3092\u81ea\u52d5\u7684\u306b\u691c\u8a3c\u3057\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u74b0\u5883\u3067\u306f\u3001\u30aa\u30d5\u30e9\u30a4\u30f3\/\u4e0d\u5b89\u5b9a\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u8907\u6570\u306e\u540c\u6642\u30bf\u30d6\u3001\u30a2\u30af\u30c6\u30a3\u30d6\u30bb\u30c3\u30b7\u30e7\u30f3\u4e2d\u306e\u30a2\u30d7\u30ea\u66f4\u65b0\u3001\u671f\u9650\u5207\u308c\u306e\u8a3c\u660e\u66f8\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u307e\u3059\u3002\u30d5\u30a3\u30fc\u30c1\u30e3\u30fc\u30d5\u30e9\u30b0\u306b\u3088\u308a\u3001\u65b0\u3057\u3044\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\u3084API\u30eb\u30fc\u30c8\u3092\u5c0f\u898f\u6a21\u306a\u30e6\u30fc\u30b6\u30fc\u96c6\u56e3\u306b\u5bfe\u3057\u3066\u6700\u521d\u306b\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u30011\u3064\u306e\u8a2d\u5b9a\u30df\u30b9\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30fb\u30ad\u30e3\u30c3\u30b7\u30e5\u5168\u4f53\u3092\u6c5a\u67d3\u3059\u308b\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>\u30c7\u30fc\u30bf\u4fdd\u8b77\u3001\u30d7\u30c3\u30b7\u30e5\u3001\u30e6\u30fc\u30b6\u30fc\u30ac\u30a4\u30c0\u30f3\u30b9<\/h2>\n\n<p>\u79c1\u306f\u30d7\u30c3\u30b7\u30e5\u901a\u77e5\u306b\u3064\u3044\u3066\u660e\u78ba\u306a\u540c\u610f\u3092\u5f97\u308b\u3068\u3068\u3082\u306b\u3001\u305d\u306e\u5229\u70b9\u3068\u983b\u5ea6\u306b\u3064\u3044\u3066\u7387\u76f4\u306b\u8aac\u660e\u3057\u3066\u3044\u308b\u3002\u30a2\u30d7\u30ea\u306f\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5927\u304d\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30ea\u30ed\u30fc\u30c9\u3059\u308b\u3002\u9060\u9694\u6e2c\u5b9a\u306b\u3064\u3044\u3066\u306f\u3001\u500b\u4eba\u30c7\u30fc\u30bf\u3092\u53b3\u5bc6\u306b\u5206\u96e2\u3057\u3001\u5b89\u5b9a\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5fc5\u8981\u306a\u3082\u306e\u3060\u3051\u3092\u6e2c\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u300c\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059 - \u4eca\u3059\u3050\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u900f\u660e\u6027\u306e\u3042\u308b\u901a\u77e5\u306b\u983c\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u81ea\u5206\u304c\u5927\u5207\u306b\u3055\u308c\u3066\u3044\u308b\u3068\u611f\u3058\u3001UI\u3084\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u306e\u9a5a\u304d\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/05\/webhosting_progressive_wa_9283.png\" alt=\"\" width=\"1536\" 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