{"id":1241,"date":"2026-10-24T08:00:00","date_gmt":"2026-10-23T23:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1241"},"modified":"2026-10-22T22:35:51","modified_gmt":"2026-10-22T13:35:51","slug":"qs-http-head-metadata-body-20261022","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1241","title":{"rendered":"HTTP\u306eHEAD\u3001\u672c\u6587\u3092\u53d7\u3051\u53d6\u3089\u305a\u306b\u8abf\u3079\u3089\u308c\u308b\u60c5\u5831\u3068\u9650\u754c"},"content":{"rendered":"<p>\u30d5\u30a1\u30a4\u30eb\u306e\u5927\u304d\u3055\u3084\u66f4\u65b0\u60c5\u5831\u3060\u3051\u3092\u77e5\u308a\u305f\u3044\u3068\u304d\u3001\u672c\u6587\u3092\u5168\u90e8\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u5fc5\u8981\u306f\u3042\u308b\u3067\u3057\u3087\u3046\u304b\u3002HTTP\u306e<strong>HEAD<\/strong>\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u540c\u3058\u8981\u6c42\u3092GET\u3067\u9001\u3063\u305f\u5834\u5408\u306e\u5fdc\u7b54\u306b\u5bfe\u5fdc\u3059\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u3001\u672c\u6587\u3092\u53d7\u3051\u53d6\u3089\u305a\u306b\u8abf\u3079\u308b\u305f\u3081\u306e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u300c\u672c\u6587\u304c\u5c4a\u304b\u306a\u3044\u300d\u300c\u30d5\u30a1\u30a4\u30eb\u304c\u7a7a\u300d\u300c\u30b5\u30fc\u30d0\u30fc\u304c\u8efd\u3044\u51e6\u7406\u3060\u3051\u3067\u8fd4\u3057\u305f\u300d\u306f\u3001\u305d\u308c\u305e\u308c\u5225\u3067\u3059\u3002HEAD\u306e\u5fdc\u7b54\u3092\u8aad\u3080\u3068\u304d\u306f\u3001\u5b9f\u969b\u306b\u53d7\u4fe1\u3057\u305f\u672c\u6587\u306e\u9577\u3055\u3068\u3001\u30d8\u30c3\u30c0\u30fc\u304c\u8aac\u660e\u3057\u3066\u3044\u308b\u5bfe\u8c61\u3092\u5206\u3051\u307e\u3059\u3002<\/p>\n<section 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href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc9110.html#section-9.3.2\">RFC 9110: HTTP Semantics<\/a>\uff082022\u5e746\u6708\u3001STD 97\uff09\u30019.3.2\u7bc0HEAD\u30018.6\u7bc0Content-Length\u3002<\/li>\n<li><a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc9111.html#section-4.3.5\">RFC 9111: HTTP Caching<\/a>\uff082022\u5e746\u6708\u3001STD 98\uff09\u30014.3.5\u7bc0Freshening Responses with 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