{"id":11219,"date":"2020-06-16T10:51:39","date_gmt":"2020-06-16T01:51:39","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=11219"},"modified":"2023-09-16T10:45:02","modified_gmt":"2023-09-16T01:45:02","slug":"%e3%80%90%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%80%91http%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=11219","title":{"rendered":"\u3010Web\u3011HTTP\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u6a5f\u80fd\u306b\u3064\u3044\u3066"},"content":{"rendered":"\n

HTTP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/h2>\n\n\n\n

HTTP\/1.1<\/h3>\n\n\n\n

1999\u5e74\u306b\u7b56\u5b9a\u3055\u308c\u3066\u9577\u3089\u304f\u3053\u308c\u304c\u4e3b\u6d41\u3060\u3063\u305f\u3002<\/p>\n\n\n\n

\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u540c\u4e00\u306e\u30b5\u30fc\u30d0\u3078\u306e\u63a5\u7d9a\u6570\u306e\u63a8\u5968\u5024\u306f2\u3067\u3059\u304c\u3001\u4e3b\u8981\u306a\u30d6\u30e9\u30a6\u30b6\u306fWeb\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u3092\u4e0a\u3052\u308b\u305f\u3081\u306b\u6700\u5927\u30676\u306eTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u540c\u6642\u306b\u78ba\u7acb\u3057\u3001\u4e26\u5217\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u5b9f\u88c5\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002\u4e00\u3064\u306e\u30e6\u30fc\u30b6\u30fc\u3067\u8907\u6570\u306e\u30bd\u30b1\u30c3\u30c8\u3092\u6d88\u8cbb\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u540c\u6642\u63a5\u7d9a\u6570\u304c\u6e1b\u308a\u307e\u3059\u3002<\/strong><\/span><\/p>\n\n\n\n

\u4e26\u5217\u3067\u30bf\u30a4\u30e0\u30ed\u30b9\u304c\u767a\u751f\u3059\u308b\u3002<\/h4>\n\n\n\n

\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3057\u305f\u3089\u3001\u4e00\u3064\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u4e00\u3064\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\u3068\u3044\u3046\u4e00\u9023\u306e\u6d41\u308c\u30921\u30ea\u30af\u30a8\u30b9\u30c8\u305a\u3064\u3053\u306a\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u8907\u6570\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u540c\u6642\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u306a\u3044\u7b49\u540c\u6642\u51e6\u7406\u304c\u3067\u304d\u306a\u3044\u306e\u3067\u30bf\u30a4\u30e0\u30ed\u30b9\u304c\u767a\u751f\u3057\u307e\u3059\u30021.1\u306b\u3082\u4e26\u5217\u3067\u51e6\u7406\u3059\u308b\u6a5f\u80fd\u3067\u3042\u308bHTTP\u30d1\u30a4\u30d7\u30e9\u30a4\u30cb\u30f3\u30b0<\/strong><\/span>\u3068\u3044\u3046\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u671f\u5f85\u3059\u308b\u307b\u3069\u901a\u4fe1\u306f\u52b9\u7387\u5316\u3067\u304d\u306a\u304b\u3063\u305f\u306e\u3067\u63a1\u7528\u306b\u306f\u81f3\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n\n\n\n

Keep-Alive<\/h4>\n\n\n\n

\u76ee\u7684\u306e\u901a\u4fe1\u304c\u7d42\u308f\u3063\u305f\u5f8c\u3082TCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u4e00\u5b9a\u6642\u9593\u7dad\u6301\u3057\u3001\u9023\u7d9a\u3057\u305f\u8981\u6c42\u304c\u6765\u305f\u3068\u304d\u306f\u524d\u56de\u306e\u63a5\u7d9a\u3092\u518d\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6bce\u56deTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u78ba\u7acb\u3059\u308b\u7121\u99c4\u3092\u7701\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

HTTP\/2<\/h3>\n\n\n\n

2023\u5e74\u73fe\u5728\u306fWeb\u30b5\u30fc\u30d0\u30fc\u3067\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u306a\u3051\u308c\u3070\u30c7\u30d5\u30a9\u30eb\u30c8\u304c\u3053\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

HTTP\/1.1\u306e\u5f8c\u7d99\u3068\u3057\u30662015\u5e74\u306b\u7b56\u5b9a\u3055\u308c\u307e\u3057\u305f\u3002Google\u304c\u958b\u767a\u3057\u305fSPDY\u3068\u3044\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u307b\u307c\u305d\u306e\u307e\u307e\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u3064\u306eTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u307f\u3092\u78ba\u7acb\u3057\u3066\u3001\u305d\u306e\u4e2d\u3067\u4e00\u3064\u306e\u30bd\u30b1\u30c3\u30c8\u306e\u307f\u78ba\u7acb\u3057\u307e\u3059\u3002HTTP\/1.1\u306b\u6bd4\u3079\u308b\u3068\u540c\u6642\u63a5\u7d9a\u53ef\u80fd\u306a\u30e6\u30fc\u30b6\u30fc\u6570\u304c\u5897\u3048\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d8\u30c3\u30c0\u30d5\u30a3\u30fc\u30eb\u30c9\u540d\u304c\u5168\u3066\u5c0f\u6587\u5b57\u306b\u306a\u3063\u305f\u3002<\/h4>\n\n\n\n

Cache-Control\u304c\u3001cache-control\u306b\u306a\u308b\u306a\u3069\u3002\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306e\u5b9f\u88c5\u306a\u3069\u3067\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\uff08\u4f8b\uff1aPHP\u306a\u3069\u3067getallHeaders()\u3092\u4f7f\u3063\u3066\u308b\u5834\u5408\u306a\u3069\uff09<\/p>\n\n\n\n

\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u63a1\u7528<\/h4>\n\n\n\n

1\u3064\u306eTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u4e2d\u306b\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u4e0d\u8981\u306e\u4eee\u60f3\u7684\u306aTCP\u30bd\u30b1\u30c3\u30c8\u3092\u8907\u6570\u4f5c\u6210\u3057\u3001\u305d\u308c\u3092\u7528\u3044\u3066\u4e26\u5217\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3092\u5b9f\u73fe\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u5074\u3067\u306f\u524d\u306e\u753b\u50cf\u306e\u51e6\u7406\u7d42\u4e86\u3092\u5f85\u3064\u3053\u3068\u306a\u304f\u6b21\u306e\u753b\u50cf\u306e\u53d7\u4fe1\u3092\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd<\/strong><\/span>\u3067\u3059\u3002<\/p>\n\n\n\n

\u3053\u308c\u304c\u767b\u5834\u3059\u308b\u524d\u306f\u30c9\u30e1\u30a4\u30f3\u30b7\u30e3\u30fc\u30c7\u30a3\u30f3\u30b0\u3068\u3044\u3063\u305fTCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u6570\u3092\u7a3c\u3044\u3067\u9ad8\u901f\u5316\u3092\u884c\u3046\u624b\u6cd5\u3082\u53d6\u3089\u308c\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u305d\u308c\u306f\u307b\u307c\u7121\u610f\u5473\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n

\u30d8\u30c3\u30c0\u5727\u7e2e<\/h4>\n\n\n\n

HTTPS\u306e\u5fc5\u9808\u5316<\/h4>\n\n\n\n

\u30b5\u30fc\u30d0\u30fc\u30d7\u30c3\u30b7\u30e5<\/h4>\n\n\n\n

HTTP\/3<\/h3>\n\n\n\n

2018\u5e74\u306b\u7b56\u5b9a\u3055\u308c\u305f\u30022\u30683\u304c\u8fd1\u5e74\u6025\u901f\u306b\u51fa\u3066\u304d\u305f\u80cc\u666f\u3068\u3057\u3066\u306f\u3001Web\u30da\u30fc\u30b8\u306e\u8907\u96d1\u5316\u306b\u3088\u308b\u3082\u306e\u30021.1\u3067\u306f\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u304d\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u3059\u3002<\/p>\n\n\n\n

HTTP\u30ea\u30af\u30a8\u30b9\u30c8<\/h2>\n\n\n\n

\u30ea\u30af\u30a8\u30b9\u30c8\u30e9\u30a4\u30f3<\/h3>\n\n\n\n

GET\u3084HTTP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d8\u30c3\u30c0<\/h3>\n\n\n\n

Host<\/h4>\n\n\n\n

\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u8981\u6c42\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u540d\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u3067\u3059\u3002<\/p>\n\n\n\n

User-Agent<\/h4>\n\n\n\n

\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u4f7f\u7528\u3057\u3066\u3044\u308bWeb\u30d6\u30e9\u30a6\u30b6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30bf\u30a4\u30d7\u3067\u3059\u3002<\/p>\n\n\n\n

Accept-Encoding<\/h4>\n\n\n\n

\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u3069\u306e\u5727\u7e2e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306a\u3089\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7406\u89e3\u3067\u304d\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

Connection<\/h4>\n\n\n\n

Cookie<\/h4>\n\n\n\n

\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u969b\u306b\u81ea\u52d5\u3067\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002\u591a\u304f\u306eWeb\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3053\u308c\u3092\u7528\u3044\u3066\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

\u30dc\u30c7\u30a3<\/h3>\n\n\n\n

\u4ed8\u3051\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u304c\u3001\u3064\u3051\u306a\u3044\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n

HTTP\u30ec\u30b9\u30dd\u30f3\u30b9<\/h2>\n\n\n\n

\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306e\u7406\u89e3\u306f\u914d\u4fe1\u306e\u6700\u9069\u5316\u306b\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n

\u30b9\u30c6\u30fc\u30bf\u30b9\u30e9\u30a4\u30f3<\/h3>\n\n\n\n

HTTP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3084\u30ea\u30af\u30a8\u30b9\u30c8\u7d50\u679c\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

\u30d8\u30c3\u30c0\u30fc<\/h3>\n\n\n\n

\u5185\u5bb9\u306f\u30aa\u30ea\u30b8\u30f3\u30b5\u30fc\u30d0\u30fc\u3084\u3001Proxy\u30b5\u30fc\u30d0\u30fc\u3001CDN\u30b5\u30fc\u30d0\u30fc\u3067\u8aad\u307f\u53d6\u308a\u3084\u751f\u6210\u3001\u5909\u66f4\u304c\u81ea\u7531\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

Date<\/h4>\n\n\n\n

\u3044\u3064HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u751f\u6210\u3055\u308c\u305f\u304b\u306e\u65e5\u6642\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

Content-Type<\/h4>\n\n\n\n

\u3069\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u30bf\u30a4\u30d7\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306f\u3053\u308c\u3092\u898b\u3066\u5f62\u5f0f\u3084\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u5224\u5225\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

Cache-Control<\/h4>\n\n\n\n

max-age<\/h5>\n\n\n\n

\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5236\u5fa1\u3059\u308b\u30d8\u30c3\u30c0\u3067\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6271\u3046\u4e0a\u3067\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002max-age\u306a\u3069\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u671f\u9650\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\uff08\u4e00\u822c\u7684\u306bTTL\u3068\u547c\u3073\u307e\u3059\u3002\uff09<\/p>\n\n\n\n

\u306a\u304a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30aa\u30ea\u30b8\u30f3\u306f\u6642\u523b\u304c\u540c\u671f\u3057\u3066\u3044\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u306e\u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0(Date)\u3092\u3082\u3068\u306bmax-age\u3092\u8a2d\u5b9a\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3002<\/p>\n\n\n\n

\u6570\u5f0f\u3067\u8868\u3059\u3068\u300cExpires - Date = TTL(max-age)\u300d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u4f8b\u3048\u3070\u3001Proxy\u30922\u53f0\u631f\u3080\u5834\u5408\u306fProxy1\u30682\u3092\u901a\u904e\u3059\u308b\u6642\u9593\u304cmax-age\u306e\u79d2\u6570\u3092\u8d85\u3048\u3066\u306f\u3044\u3051\u306a\u3044\u3067\u3059\u3002\uff081\u6642\u9593\u3068\u6307\u5b9a\u3055\u308c\u3066\u3044\u305f\u3089Proxy1\u30012\u3092\u901a\u904e\u3059\u308b\u5408\u8a08\u6642\u9593\u304c1\u6642\u9593\u3092\u8d85\u3048\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\uff09<\/p>\n\n\n\n

\u306a\u306e\u3067\u3001\u30d7\u30ed\u30ad\u30b7\u3092\u7d4c\u7531\u3059\u308b\u969b\u306bTTL\u3092\u6d88\u8cbb\u3057\u3066\u3044\u305f\u5834\u5408\u306f\u3001\u672b\u7aef\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u7aef\u672b\u3067\u4f7f\u3048\u308bTTL\u306f\u307b\u3068\u3093\u3069\u6b8b\u3089\u306a\u3044\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5bfe\u7b56\u3068\u3057\u3066\u3001\u5f8c\u8ff0\u3059\u308bs-maxage\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067CDN\u3067\u4f7f\u3048\u308bTTL\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u7aef\u672b\u3067\u4f7f\u3048\u308bTTL\u3092\u5206\u5272\u3059\u308b\u3068\u3044\u3046\u624b\u6cd5\u304c\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n

s-maxage<\/h5>\n\n\n\n

\u7d4c\u8def\u4e0a\u306e\u671f\u9650\u6307\u5b9a\u3067\u3059\u3002Proxy\u3084CDN\u306b\u3068\u3063\u3066\u306e\u307f\u6709\u52b9\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u671f\u9650\u306b\u306a\u308a\u307e\u3059\u3002max-age\u3082\u540c\u6642\u306b\u6307\u5b9a\u304c\u53ef\u80fd\u3067\u3001max-age\u304c1800\u3001s-maxage\u304c3600\u3060\u3063\u305f\u5834\u5408\u306fCDN\u3067\u306f3600\u79d2\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3001\u672b\u7aef\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30d6\u30e9\u30a6\u30b6\u3067\u306f1800\u79d2\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

stale-while-revalidate<\/h5>\n\n\n\n

\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u671f\u9650\u304c\u5207\u308c\u305f\u969b\u306b\u4f55\u79d2\u307e\u3067\u53e4\u3044\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u3063\u3066\u826f\u3044\u304b\u306e\u6307\u5b9a\u306b\u306a\u308a\u307e\u3059\u30022010\u5e74\u306b\u7b56\u5b9a\u3055\u308c\u307e\u3057\u305f\u3002Chrome\u306e\u30b5\u30dd\u30fc\u30c8\u306f2019\u5e74\u306e75\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n

private\/public<\/h5>\n\n\n\n

\u3053\u3053\u3067private\u3068\u6307\u5b9a\u3059\u308c\u3070private\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u306a\u304a\u3001public\u3068\u6307\u5b9a\u3059\u308b\u306e\u306f\u5371\u967a\u306a\u306e\u3067\u907f\u3051\u307e\u3057\u3087\u3046\u3002\uff08\u3061\u306a\u307f\u306b\u3001shared\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3057\u305f\u3044\u5834\u5408\u306f\u672a\u6307\u5b9a\u3067\u3082\u305d\u3046\u306a\u308a\u307e\u3059\u3002\uff09\u3001public\u3068\u6307\u5b9a\u3059\u308b\u30b1\u30fc\u30b9\u306f\u304b\u306a\u308a\u7a00\u3067Authorization\u30d8\u30c3\u30c0\u30fc\u306f\u901a\u5e38\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u304d\u306a\u3044\u306e\u3067\u3059\u304c\u691c\u8a3c\u76ee\u7684\u3067\u5f37\u5236\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u305f\u3044\u5834\u5408\u306a\u3069\u306b\u4f7f\u3048\u308b\u7a0b\u5ea6\u3067\u3059\u3002<\/p>\n\n\n\n

Age<\/h4>\n\n\n\n

\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u304b\u3089\u306e\u7d4c\u904e\u6642\u9593\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u30aa\u30ea\u30b8\u30f3\u304b\u3089\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092Proxy\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u304b\u3089\u306e\u671f\u9593\u3067\u3059\u3002Age\u306e\u7d4c\u904e\u6642\u9593\u304c\u3001Cache-Control\u306emax-age\u4ee5\u4e0a\u3067\u3042\u308c\u3070\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u6709\u52b9\u671f\u9650\u5207\u308c\u3068\u898b\u306a\u3057\u3066\u518d\u5ea6\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n

Expires<\/h4>\n\n\n\n

\u671f\u9650\u5207\u308c\u3092\u7d76\u5bfe\u6642\u9593\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002\uff08Cache-Control\u3060\u3068\u76f8\u5bfe\u6642\u9593\u3060\u3063\u305f\uff09<\/p>\n\n\n\n

Expires: Thu, 12 Oct 2023 12:00:00 GMT<\/code><\/pre>\n\n\n\n
x-<\/h4>\n\n\n\n
x-\u3067\u59cb\u307e\u308b\u3082\u306e\u306f\u72ec\u81ea\u30d8\u30c3\u30c0\u3068\u547c\u3070\u308c\u308b\u72ec\u81ea\u306b\u4f7f\u308f\u308c\u308b\u975e\u6a19\u6e96\u30d8\u30c3\u30c0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u30dc\u30c7\u30a3<\/h3>\n\n\n\n
HTML\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n
\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u306f\uff1f<\/h2>\n\n\n\n
\u4e00\u5ea6\u30cd\u30c3\u30c8\u4e0a\u3067\u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u3092\u30ed\u30fc\u30ab\u30eb\u306b\u4fdd\u5b58\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u518d\u5ea6\u30c7\u30fc\u30bf\u3092\u8868\u793a\u3059\u308b\u969b\u306b\u7d20\u65e9\u304f\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u30d6\u30e9\u30a6\u30b6\u306e\u6a5f\u80fd<\/strong><\/span>\u3067\u3059\u3002Web\u30a2\u30d7\u30ea\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u554f\u984c\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u4f7f\u308f\u306a\u3044\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\uff08\u30ce\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\uff09<\/p>\n\n\n\n
\u305f\u3060\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u306a\u3069\u7b2c\u4e09\u8005\u306b\u6d41\u51fa\u3057\u3066\u3082\u554f\u984c\u306a\u3044\u5185\u5bb9\u3067\u3042\u308c\u3070\u3053\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u3046\u307e\u304f\u4f7f\u3063\u3066\u3044\u304f\u3053\u3068\u304c\u975e\u5e38\u306b\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n
\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u6e1b\u3089\u305b\u308b\u306e\u3067\u8ee2\u9001\u91cf\u3092\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u7279\u306b\u8fd1\u5e74\u306fAWS\u306a\u3069\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u304c\u8ee2\u9001\u91cf\u30d9\u30fc\u30b9\u3067\u8ab2\u91d1\u3092\u884c\u3046\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u6975\u3081\u3066\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n
\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30c7\u30e1\u30ea\u30c3\u30c8<\/h2>\n\n\n\n
    \n
  • \u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u60c5\u5831\u304c\u53e4\u3044\u5834\u5408\u306f\u6700\u65b0\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u3002<\/li>\n\n\n\n
  • \u30c7\u30a3\u30b9\u30af\u4e0a\u306b\u500b\u4eba\u60c5\u5831\u304c\u4fdd\u5b58\u3055\u308c\u3066\u3057\u307e\u3046\u3002<\/li>\n<\/ul>\n\n\n\n
    \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6709\u52b9\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n
    \u57fa\u672c\u7684\u306b\u306f\u3001HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306ecache-control\u3067\u5236\u5fa1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
    \u4f8b\u3048\u3070\u30011\u6642\u9593\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u3042\u308c\u3070\u300cmax-age=3600\u300d\u3068\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
    \u306a\u304a\u3001\u3044\u304f\u3064\u304b\u306e\u6761\u4ef6\u3092\u6e80\u305f\u305b\u3070\u3053\u306e\u6307\u5b9a\u304c\u306a\u304f\u3066\u3082\u81ea\u52d5\u7684\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u884c\u3044\u307e\u3059\u3002\uff08HTTP\u5074\u306e\u6319\u52d5\uff09<\/p>\n\n\n\n
    \u30ce\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n
    \u30ce\u30fc\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3059\u308b\u306b\u306f\u4e0b\u8a182\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u306a\u304a\u3001HTTP\/1.0\u3068HTTP1.1\u3067\u306f\u4ed5\u69d8\u304c\u7570\u306a\u308b\u306e\u3067\u4e21\u65b9\u306b\u5bfe\u5fdc\u3057\u3066\u3042\u3052\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
      \n
    • HTTP\u30d8\u30c3\u30c0\u3067\u5236\u5fa1\u3059\u308b\u65b9\u6cd5<\/li>\n\n\n\n
    • HTML\u306emeta\u30bf\u30b0\u3067\u5236\u5fa1\u3059\u308b\u65b9\u6cd5<\/li>\n<\/ul>\n\n\n\n
      HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u306ecache-control\u3067\u5236\u5fa1\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n
      no-store\u3068\u6307\u5b9a\u3059\u308c\u3070\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u683c\u7d0d\u3057\u306a\u3044\u3068\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n
      \u305f\u3060\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u7aef\u672b\u3067\u306f\u6982\u306d\u554f\u984c\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u3082\u3057CDN\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408CDN\u306b\u53d7\u4fe1\u3057\u305f\u6642\u306b\u3053\u308c\u3092\u89e3\u91c8\u3057\u3066\u304f\u308c\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u672c\u6765\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u3082\u306e\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3067\u304d\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u4e8b\u6545\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n
      \u3053\u306e\u4e8b\u6545\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u307e\u305a\u306f\u300cprivate\u300d\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4fdd\u5b58\u3055\u305b\u306a\u3044\u305f\u3081\u306e\u300cno-cache\u300d\u3001\u30aa\u30ea\u30b8\u30f3\u304c\u30c0\u30a6\u30f3\u3057\u3066\u3044\u305f\u5834\u5408\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u3053\u3068\u3092\u9632\u3050\u305f\u3081\u306b\u300cmust-revalidate\u300d\u3092\u5408\u308f\u305b\u3066\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
      no-cache\u3068\u306e\u52d8\u9055\u3044\u3092\u907f\u3051\u308b\u3053\u3068<\/h4>\n\n\n\n
      \u3061\u306a\u307f\u306b\u3001\u4f3c\u305f\u3088\u3046\u306a\u9805\u76ee\u306b\u300cno-cache\u300d\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u3055\u308c\u305f\u4e0a\u3067\u4f7f\u3046\u969b\u306e\u53d6\u308a\u6c7a\u3081\u306e\u5185\u5bb9\u306a\u306e\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u81ea\u4f53\u306f\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u9593\u9055\u3048\u3066\u8a2d\u5b9a\u3057\u306a\u3044\u3088\u3046\u6ce8\u610f\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\uff08no-cache\u306f\u30aa\u30ea\u30b8\u30f3\u3078\u300c\u81ea\u5206\u304c\u4fdd\u6301\u3057\u3066\u3044\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u6700\u65b0\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3069\u3046\u304b\u300d\u554f\u3044\u5408\u308f\u305b\u3066\u554f\u984c\u306a\u3044\u304b\u30c1\u30a7\u30c3\u30af\u3057\u554f\u984c\u306a\u3051\u308c\u3070\u4f7f\u3046\u307f\u305f\u3044\u306a\u6319\u52d5\u306b\u306a\u308a\u307e\u3059\u3002\uff09<\/p>\n\n\n\n
      \u3061\u306a\u307f\u306b\u3001\u4e0a\u8a18\u306e\u6027\u8cea\u4e0a\u3001\u300cno-cache\u300d\u306f\u300cmax-age\u300d\u3068\u306e\u5171\u5b58\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n
      max-age=0\u306f\u3069\u3046\u304b\uff1f<\/h4>\n\n\n\n
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        \n
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      • HTML4\u3068HTML5\u3067\u5fae\u5999\u306b\u4ed5\u69d8\u304c\u7570\u306a\u308b\u3002<\/li>\n<\/ul>\n\n\n\n
        IE11\u306e\u554f\u984c\u70b9<\/h3>\n\n\n\n
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        Apache<\/h3>\n\n\n\n
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        \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e<\/h3>\n\n\n\n
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        \u4ee5\u4e0b\u3069\u306e\u3088\u3046\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u3042\u3063\u3066\u3082\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u306f\u5b58\u5728\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
          \n
        • EC2+EIP<\/li>\n\n\n\n
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        • S3<\/li>\n\n\n\n
        • AWS\u4ee5\u5916\u306e\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/li>\n\n\n\n
        • VPS<\/li>\n<\/ul>\n\n\n\n
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            \n
          • \u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u5d29\u308c<\/li>\n\n\n\n
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