{"id":253,"date":"2026-03-29T03:01:37","date_gmt":"2026-03-29T03:01:37","guid":{"rendered":"https:\/\/www.ai-diagrams.com\/ja\/c4-model-practical-system-design\/"},"modified":"2026-03-29T03:01:37","modified_gmt":"2026-03-29T03:01:37","slug":"c4-model-practical-system-design","status":"publish","type":"post","link":"https:\/\/www.ai-diagrams.com\/ja\/c4-model-practical-system-design\/","title":{"rendered":"C4\u30e2\u30c7\u30eb\uff1a\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1"},"content":{"rendered":"<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306f\u3001\u3057\u3070\u3057\u3070\u5358\u306a\u308b\u6280\u8853\u7684\u5b9f\u88c5\u3068\u8aa4\u89e3\u3055\u308c\u308b\u3002\u5b9f\u969b\u306b\u306f\u3001\u305d\u308c\u306f\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u30c4\u30fc\u30eb\u3067\u3042\u308b\u3002C4\u30e2\u30c7\u30eb\u306f\u3001\u62bd\u8c61\u5ea6\u306e\u7570\u306a\u308b\u30ec\u30d9\u30eb\u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u53ef\u8996\u5316\u3059\u308b\u69cb\u9020\u7684\u306a\u65b9\u6cd5\u3092\u63d0\u4f9b\u3059\u308b\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001C4\u30e2\u30c7\u30eb\u306e\u5c64\u3001\u5229\u70b9\u3001\u304a\u3088\u3073\u6280\u8853\u30c1\u30fc\u30e0\u3068\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306b\u5bfe\u3059\u308b\u5b9f\u8df5\u7684\u306a\u5fdc\u7528\u306b\u3064\u3044\u3066\u63a2\u6c42\u3059\u308b\u3002<\/p>\n<p>\u52b9\u679c\u7684\u306a\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u4f5c\u6210\u306b\u306f\u3001\u8907\u96d1\u306a\u8868\u8a18\u3084\u96e3\u89e3\u306a\u8a18\u53f7\u306f\u5fc5\u8981\u306a\u3044\u3002\u660e\u78ba\u3055\u3001\u4e00\u8cab\u6027\u3001\u305d\u3057\u3066\u5bfe\u8c61\u8aad\u8005\u306b\u9069\u3057\u305f\u8a73\u7d30\u5ea6\u304c\u6c42\u3081\u3089\u308c\u308b\u3002C4\u30e2\u30c7\u30eb\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u30924\u3064\u306e\u660e\u78ba\u306a\u62bd\u8c61\u5ea6\u306e\u30ec\u30d9\u30eb\u306b\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u8ab2\u984c\u306b\u5bfe\u51e6\u3059\u308b\u3002\u5404\u30ec\u30d9\u30eb\u306f\u7279\u5b9a\u306e\u76ee\u7684\u3092\u6301\u3061\u3001\u7279\u5b9a\u306e\u8aad\u8005\u5c64\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u308b\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Infographic explaining the C4 Model for software architecture with four abstraction levels: Context (users and external systems), Container (runtime environments like web apps and databases), Component (internal logical units), and Code (implementation details). Features clean flat design with pastel colors, black outlines, rounded shapes, and key benefits including better communication, faster onboarding, and reduced technical debt. Suitable for students and social media.\" decoding=\"async\" src=\"https:\/\/www.ai-diagrams.com\/wp-content\/uploads\/2026\/03\/c4-model-software-architecture-infographic-16x9-1.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\udde9 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\u4e3b\u30b7\u30b9\u30c6\u30e0\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u3002\u6c7a\u6e08\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3001\u30ec\u30ac\u30b7\u30fc\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306a\u3069\u304c\u542b\u307e\u308c\u308b\u3002<\/li>\n<li><strong>\u95a2\u4fc2\uff1a<\/strong> \u30b7\u30b9\u30c6\u30e0\u3068\u30a2\u30af\u30bf\u30fc\u3001\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u7d50\u3076\u7dda\u3002\u3053\u308c\u3089\u306e\u7dda\u306f\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\uff08\u4f8b\uff1a\u300cHTTPS\u300d\u3001\u300c\u6ce8\u6587\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u300d\uff09\u3067\u30e9\u30d9\u30eb\u4ed8\u3051\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<p>\u4e01\u5be7\u306b\u4f5c\u3089\u308c\u305f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u300c\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3069\u306e\u3088\u3046\u306a\u6a5f\u80fd\u3092\u679c\u305f\u3057\u3001\u8ab0\u304c\u305d\u308c\u3092\u4f7f\u7528\u3059\u308b\u306e\u304b\uff1f\u300d\u3068\u3044\u3046\u554f\u3044\u306b\u7b54\u3048\u307e\u3059\u3002\u5358\u4e00\u306e\u30da\u30fc\u30b8\u3084\u30b9\u30e9\u30a4\u30c9\u306b\u53ce\u307e\u308b\u307b\u3069\u7c21\u6f54\u3067\u3042\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<h2>\ud83d\udce6 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\u30b3\u30f3\u30c6\u30ca\u3068\u306f\u4f55\u304b\uff1f<\/h3>\n<p>\u30b3\u30f3\u30c6\u30ca\u3068\u306f\u3001\u5b9f\u884c\u74b0\u5883\u307e\u305f\u306f\u30c7\u30d7\u30ed\u30a4\u5358\u4f4d\u3067\u3059\u3002\u7279\u5b9a\u306e\u6280\u8853\u3067\u306f\u306a\u304f\u3001\u8ad6\u7406\u7684\u306a\u30b0\u30eb\u30fc\u30d7\u5316\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u4f8b\u3092\u6319\u3052\u308b\u3068\u3001<\/p>\n<ul>\n<li>Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08\u30d6\u30e9\u30a6\u30b6\u307e\u305f\u306f\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u5b9f\u884c\uff09<\/li>\n<li>\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff08\u30c7\u30d0\u30a4\u30b9\u4e0a\u3067\u5b9f\u884c\uff09<\/li>\n<li>\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\uff08\u30b3\u30f3\u30c6\u30ca\u307e\u305f\u306f\u30b5\u30fc\u30d0\u30fc\u30ec\u30b9\u95a2\u6570\u4e0a\u3067\u5b9f\u884c\uff09<\/li>\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08\u6c38\u7d9a\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\uff09<\/li>\n<li>\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\uff08\u958b\u767a\u8005\u30de\u30b7\u30f3\u4e0a\u3067\u5b9f\u884c\uff09<\/li>\n<\/ul>\n<h3>\ud83d\udd11 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\u30b3\u30f3\u30c6\u30ca\u9593\u306e\u901a\u4fe1\u65b9\u6cd5\u3092\u793a\u3059\u7dda\u3067\u3059\u3002\u30e9\u30d9\u30eb\u306b\u306f\u30d7\u30ed\u30c8\u30b3\u30eb\uff08HTTP\u3001gRPC\u3001TCP\uff09\u3068\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u660e\u8a18\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u56f3\u306f\u30a4\u30f3\u30d5\u30e9\u69cb\u6210\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5883\u754c\u304c\u3069\u3053\u306b\u3042\u308b\u304b\u3092\u7279\u5b9a\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7570\u306a\u308b\u90e8\u5206\u9593\u3067\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u628a\u63e1\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<h3>\ud83d\udcca \u6bd4\u8f03\uff1a\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3 vs. \u30b3\u30f3\u30c6\u30ca\u56f3<\/h3>\n<table>\n<tr>\n<th>\u7279\u5fb4<\/th>\n<th>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3<\/th>\n<th>\u30b3\u30f3\u30c6\u30ca\u56f3<\/th>\n<\/tr>\n<tr>\n<td>\u7126\u70b9<\/td>\n<td>\u30d3\u30b8\u30cd\u30b9\u7bc4\u56f2\u3068\u5916\u90e8\u3068\u306e\u76f8\u4e92\u4f5c\u7528<\/td>\n<td>\u6280\u8853\u7684\u5b9f\u88c5\u3068\u5b9f\u884c\u6642<\/td>\n<\/tr>\n<tr>\n<td>\u5bfe\u8c61\u8005<\/td>\n<td>\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3001\u7d4c\u55b6\u9663<\/td>\n<td>\u958b\u767a\u8005\u3001DevOps\u3001\u30a2\u30fc\u30ad\u30c6\u30af\u30c8<\/td>\n<\/tr>\n<tr>\n<td>\u8a73\u7d30\u30ec\u30d9\u30eb<\/td>\n<td>\u9ad8<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u8907\u96d1\u3055<\/td>\n<td>\u4f4e<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<\/tr>\n<\/table>\n<h2>\ud83e\uddf1 \u30ec\u30d9\u30eb3\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u56f3<\/h2>\n<p>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u56f3\u306f\u5358\u4e00\u306e\u30b3\u30f3\u30c6\u30ca\u306b\u30ba\u30fc\u30e0\u30a4\u30f3\u3057\u307e\u3059\u3002\u3053\u306e\u30b3\u30f3\u30c6\u30ca\u5185\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u8ad6\u7406\u69cb\u9020\u3092\u793a\u3057\u307e\u3059\u3002\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u72ec\u7acb\u3057\u3066\u30c7\u30d7\u30ed\u30a4\u53ef\u80fd\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3055\u308c\u305f\u90e8\u5206\u3067\u3059\u3002<\/p>\n<h3>\ud83d\udee0\ufe0f \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u306f\u4f55\u304b\uff1f<\/h3>\n<p>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u30b3\u30fc\u30c9\u306e\u8ad6\u7406\u7684\u306a\u5358\u4f4d\u3067\u3059\u3002\u7269\u7406\u7684\u306a\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u306a\u304f\u3001\u6a5f\u80fd\u7684\u306a\u30b0\u30eb\u30fc\u30d7\u5316\u3067\u3059\u3002\u4f8b\u3092\u6319\u3052\u308b\u3068\uff1a<\/p>\n<ul>\n<li>\u30b5\u30fc\u30d3\u30b9\u30af\u30e9\u30b9\uff08\u4f8b\uff1a\u300cOrderService\u300d\uff09<\/li>\n<li>API\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u30fc<\/li>\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30ea\u30dd\u30b8\u30c8\u30ea<\/li>\n<li>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30b8\u30e7\u30d6\u30ef\u30fc\u30ab\u30fc<\/li>\n<li>UI\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8<\/li>\n<\/ul>\n<h3>\ud83d\udd11 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Repository\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u300d\u3068\u660e\u78ba\u306b\u8a00\u3048\u308b\u3002<\/p>\n<h3>\ud83d\udcc8 \u65b0\u4eba\u306e\u30aa\u30f3\u30dc\u30fc\u30c7\u30a3\u30f3\u30b0<\/h3>\n<p>\u65b0\u5165\u793e\u54e1\u306f\u3001Context\u56f3\u304b\u3089\u59cb\u3081\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6bb5\u968e\u7684\u306b\u6df1\u304f\u6398\u308a\u4e0b\u3052\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u7d20\u65e9\u304f\u7406\u89e3\u3067\u304d\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u751f\u7523\u7684\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593\u304c\u77ed\u7e2e\u3055\u308c\u308b\u3002<\/p>\n<h3>\ud83d\udd0d 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