{"id":47523,"date":"2026-08-14T14:06:36","date_gmt":"2026-08-14T05:06:36","guid":{"rendered":"https:\/\/www.ripla.co.jp\/blog\/?p=47523"},"modified":"2026-09-01T07:12:28","modified_gmt":"2026-08-31T22:12:28","slug":"session-cookie","status":"publish","type":"post","link":"https:\/\/www.ripla.co.jp\/blog\/system\/session-cookie\/","title":{"rendered":"\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u5c5e\u6027\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u89e3\u8aac"},"content":{"rendered":"\n<p 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color:#222;\"><strong>\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u3068\u306f\uff1f\u307e\u305a\u62bc\u3055\u3048\u308b\u5b9a\u7fa9\u3068\u5f79\u5272<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u8b58\u5225\u5b50\u3092Cookie\u3068\u3057\u3066\u4fdd\u6301\u3057\u3001\u8981\u6c42\u3054\u3068\u306b\u81ea\u52d5\u9001\u4fe1\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\u5c5e\u6027\u8a2d\u5b9a\u3067\u76d7\u96e3\u3084\u9001\u4fe1\u7bc4\u56f2\u3092\u6291\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">Set-Cookie\u3067Secure\u3001HttpOnly\u3001SameSite\u3001Path\u3001Domain\u3001Max-Age\u306a\u3069\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u8b58\u5225\u5b50\u3068\u5229\u7528\u8005\u72b6\u614b\u3092\u7ba1\u7406\u3057\u3001\u66f4\u65b0\u3068\u5931\u52b9\u3092\u884c\u3044\u307e\u3059\u3002\u6700\u521d\u306b\u76ee\u7684\u5909\u6570\u307e\u305f\u306f\u8a55\u4fa1\u5024\u306e\u610f\u5473\u3001\u89b3\u6e2c\u5358\u4f4d\u3001\u5bfe\u8c61\u671f\u9593\u3001\u5229\u7528\u53ef\u80fd\u306a\u5909\u6570\u3092\u78ba\u5b9a\u3057\u307e\u3059\u3002\u696d\u52d9\u4e0a\u306e\u5bfe\u8c61\u5916\u3092\u5f8c\u304b\u3089\u90fd\u5408\u3088\u304f\u9664\u304b\u305a\u3001\u9664\u5916\u4ef6\u6570\u3068\u7406\u7531\u3092\u30ed\u30b0\u306b\u6b8b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"session-cookie-step2\" class=\"wp-block-heading\"><strong>2. \u5019\u88dc\u8a2d\u5b9a\u3092\u5b66\u7fd2\u30fb\u63a8\u5b9a\u3059\u308b<\/strong><\/h3>\n\n\n\n<p 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class=\"wp-block-heading\"><strong>\u5c0f\u3055\u306a\u691c\u8a3c\u304b\u3089\u59cb\u3081\u308b<\/strong><\/h3>\n\n\n\n<p 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class=\"wp-block-paragraph\">localStorage\u3078\u30c8\u30fc\u30af\u30f3\u3092\u7f6e\u304f\u65b9\u5f0f\u3088\u308aHttpOnly\u3067JavaScript\u304b\u3089\u96a0\u305b\u307e\u3059\u304c\u3001CSRF\u5bfe\u7b56\u304c\u5fc5\u8981\u3067\u3059\u3002Bearer\u30c8\u30fc\u30af\u30f3\u306f\u9001\u4fe1\u65b9\u6cd5\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6bd4\u8f03\u3059\u308b\u3068\u304d\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u5206\u5272\u3001\u76ee\u7684\u3001\u8a55\u4fa1\u671f\u9593\u3001\u524d\u51e6\u7406\u3001\u8a08\u7b97\u4e88\u7b97\u3092\u305d\u308d\u3048\u307e\u3059\u3002\u624b\u6cd5\u3054\u3068\u306b\u7b54\u3048\u3089\u308c\u308b\u554f\u3044\u304c\u9055\u3046\u5834\u5408\u3001\u5358\u7d14\u306a\u9806\u4f4d\u4ed8\u3051\u3092\u907f\u3051\u3001\u7cbe\u5ea6\u3001\u5b89\u5b9a\u6027\u3001\u8aac\u660e\u3001\u8cbb\u7528\u3001\u4fdd\u5b88\u6027\u3092\u4e26\u3079\u305f\u5224\u65ad\u8868\u3092\u4f5c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"session-cookie-evaluation\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u306e\u8a55\u4fa1\u65b9\u6cd5\uff5c\u6570\u5b57\u3060\u3051\u3067\u5224\u65ad\u3057\u306a\u3044<\/strong><\/h2>\n\n\n\n<h3 id=\"session-cookie-metrics\" class=\"wp-block-heading\"><strong>\u4e3b\u8981\u6307\u6a19\u3068\u4e0d\u78ba\u5b9f\u6027<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Secure\/HttpOnly\/SameSite\u8a2d\u5b9a\u3001\u5931\u52b9\u3001\u56fa\u5b9a\u5316\u3001CSRF\u5931\u6557\u3001Cookie\u30b5\u30a4\u30ba\u3001\u9001\u4fe1\u7bc4\u56f2\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"session-cookie-diagnostics\" class=\"wp-block-heading\"><strong>\u8a3a\u65ad\u3068\u518d\u73fe\u6027<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e73\u5747\u5024\u3060\u3051\u3067\u306a\u304f\u3001\u671f\u9593\u5225\u3001\u30b0\u30eb\u30fc\u30d7\u5225\u3001\u6975\u7aef\u306a\u30b1\u30fc\u30b9\u5225\u306e\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u3092\u5909\u3048\u305f\u611f\u5ea6\u5206\u6790\u3001\u5225\u30c7\u30fc\u30bf\u3067\u306e\u78ba\u8a8d\u3001\u8907\u6570\u30b7\u30fc\u30c9\u3067\u306e\u518d\u5b9f\u9a13\u3092\u884c\u3044\u3001\u7d50\u8ad6\u304c\u4e00\u3064\u306e\u5076\u7136\u306b\u4f9d\u5b58\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u70b9\u691c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"session-cookie-pitfalls\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u3067\u8d77\u304d\u3084\u3059\u3044\u5931\u6557\u3068\u5bfe\u7b56<\/strong><\/h2>\n\n\n\n<h3 id=\"session-cookie-pitfall1\" class=\"wp-block-heading\"><strong>\u30c7\u30fc\u30bf\u3068\u524d\u51e6\u7406\u306e\u554f\u984c<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u30c7\u30fc\u30bf\u3067\u96c6\u8a08\u30fb\u6a19\u6e96\u5316\u30fb\u88dc\u5b8c\u3057\u3066\u304b\u3089\u5206\u5272\u3059\u308b\u3001\u672a\u6765\u306e\u5024\u3092\u5165\u529b\u306b\u542b\u3081\u308b\u3001\u8a55\u4fa1\u5bfe\u8c61\u3092\u7d50\u679c\u3092\u898b\u3066\u9078\u3076\u3001\u3068\u3044\u3063\u305f\u64cd\u4f5c\u306f\u6027\u80fd\u3084\u63a8\u5b9a\u3092\u697d\u89b3\u7684\u306b\u3057\u307e\u3059\u3002\u524d\u51e6\u7406\u3092\u5b66\u7fd2\u5074\u3078\u9650\u5b9a\u3057\u3001\u51e6\u7406\u524d\u5f8c\u306e\u4ef6\u6570\u3068\u5024\u57df\u3092\u76e3\u67fb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"session-cookie-pitfall2\" class=\"wp-block-heading\"><strong>\u6307\u6a19\u3068\u554f\u3044\u3092\u6df7\u540c\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Domain\u3092\u5e83\u3052\u3059\u304e\u308b\u3001SameSite\u306e\u8aa4\u8a2d\u5b9a\u3001HTTPS\u306a\u3057\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u56fa\u5b9a\u3001\u30ed\u30b0\u3084URL\u3078\u306e\u8b58\u5225\u5b50\u51fa\u529b\u304c\u3042\u308a\u307e\u3059\u3002\u6307\u6a19\u306e\u6539\u5584\u304c\u696d\u52d9\u6210\u679c\u3084\u56e0\u679c\u52b9\u679c\u3092\u610f\u5473\u3059\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u5206\u6790\u304c\u7b54\u3048\u3066\u3044\u308b\u554f\u3044\u3068\u610f\u601d\u6c7a\u5b9a\u8005\u306e\u554f\u3044\u3092\u4e26\u3079\u3001\u8db3\u308a\u306a\u3044\u4eee\u5b9a\u3084\u30c7\u30fc\u30bf\u3092\u660e\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"session-cookie-pitfall3\" class=\"wp-block-heading\"><strong>\u904b\u7528\u6761\u4ef6\u306e\u5909\u5316\u3092\u7121\u8996\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5236\u5ea6\u3001\u4fa1\u683c\u3001\u9867\u5ba2\u69cb\u6210\u3001\u5b63\u7bc0\u6027\u3001\u8a08\u6e2c\u65b9\u6cd5\u306f\u5909\u5316\u3057\u307e\u3059\u3002\u5165\u529b\u5206\u5e03\u3001\u6b20\u6e2c\u3001\u7d50\u679c\u306e\u54c1\u8cea\u3001\u4e3b\u8981\u30b0\u30eb\u30fc\u30d7\u306e\u5dee\u3092\u76e3\u8996\u3057\u3001\u518d\u8a55\u4fa1\u306e\u30c8\u30ea\u30ac\u30fc\u3092\u4e8b\u524d\u306b\u6c7a\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"session-cookie-decision\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u3092\u63a1\u7528\u3059\u308b\u5224\u65ad\u57fa\u6e96<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u4e2d\u5fc3\u306e\u30ed\u30b0\u30a4\u30f3\u3067\u30b5\u30fc\u30d0\u30fc\u5074\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u5b89\u5168\u306b\u5229\u7528\u3057\u305f\u3044\u5834\u5408\u306b\u63a1\u7528\u3057\u307e\u3059\u3002\u5c5e\u6027\u3092\u74b0\u5883\u5225\u306b\u691c\u8a3c\u3057\u307e\u3059\u3002\u63a1\u7528\u3057\u306a\u3044\u5834\u5408\u3082\u3001\u57fa\u6e96\u624b\u6cd5\u3001\u898b\u9001\u3063\u305f\u7406\u7531\u3001\u6b21\u306b\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3092\u8a18\u9332\u3059\u308b\u3068\u3001\u5c06\u6765\u306e\u518d\u691c\u8a0e\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8aac\u660e\u8cc7\u6599\u3067\u306f\u3001\u6570\u5f0f\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3060\u3051\u3067\u306a\u304f\u3001\u4f55\u3092\u4eee\u5b9a\u3057\u3001\u3069\u3053\u304b\u3089\u5148\u306f\u5206\u304b\u3089\u306a\u3044\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u7d50\u679c\u3092\u5229\u7528\u3059\u308b\u4eba\u304c\u53cd\u8a3c\u6761\u4ef6\u3084\u9069\u7528\u7bc4\u56f2\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u3001\u6210\u529f\u4f8b\u3060\u3051\u3067\u306a\u304f\u5931\u6557\u4f8b\u3082\u6b8b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"session-cookie-summary\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u307e\u3068\u3081\uff5c\u76ee\u7684\u30fb\u524d\u63d0\u30fb\u8a55\u4fa1\u3092\u305d\u308d\u3048\u308b<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u8b58\u5225\u5b50\u3092Cookie\u3068\u3057\u3066\u4fdd\u6301\u3057\u3001\u8981\u6c42\u3054\u3068\u306b\u81ea\u52d5\u9001\u4fe1\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\u5c5e\u6027\u8a2d\u5b9a\u3067\u76d7\u96e3\u3084\u9001\u4fe1\u7bc4\u56f2\u3092\u6291\u3048\u307e\u3059\u3002\u4fa1\u5024\u3092\u51fa\u3059\u306b\u306f\u3001\u5bfe\u8c61\u3001\u6642\u9593\u3001\u5165\u529b\u3001\u51fa\u529b\u3001\u4eee\u5b9a\u3092\u5b9a\u7fa9\u3057\u3001\u57fa\u6e96\u624b\u6cd5\u3068\u540c\u3058\u6761\u4ef6\u3067\u8a55\u4fa1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0f\u3055\u304f\u691c\u8a3c\u3057\u3066\u304b\u3089\u9069\u7528\u7bc4\u56f2\u3092\u5e83\u3052\u3001\u8a2d\u5b9a\u30fb\u30c7\u30fc\u30bf\u30fb\u8a55\u4fa1\u7d50\u679c\u3092\u518d\u73fe\u3067\u304d\u308b\u5f62\u3067\u4fdd\u5b58\u3057\u307e\u3059\u3002\u7cbe\u5ea6\u3084\u6709\u610f\u6027\u3060\u3051\u3067\u306a\u304f\u3001\u8aa4\u308a\u306e\u30b3\u30b9\u30c8\u3001\u8aac\u660e\u53ef\u80fd\u6027\u3001\u904b\u7528\u8ca0\u8377\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u4eba\u3078\u306e\u516c\u5e73\u6027\u3082\u542b\u3081\u3066\u5224\u65ad\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"session-cookie-faq\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/strong><\/h2>\n\n\n\n<h3 id=\"session-cookie-faq-1\" class=\"wp-block-heading\"><strong>Q. \u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u8b58\u5225\u5b50\u3092Cookie\u3068\u3057\u3066\u4fdd\u6301\u3057\u3001\u8981\u6c42\u3054\u3068\u306b\u81ea\u52d5\u9001\u4fe1\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\u5c5e\u6027\u8a2d\u5b9a\u3067\u76d7\u96e3\u3084\u9001\u4fe1\u7bc4\u56f2\u3092\u6291\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"session-cookie-faq-2\" class=\"wp-block-heading\"><strong>Q. \u30bb\u30c3\u30b7\u30e7\u30f3Cookie\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u4f7f\u3044\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p 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