{"id":1887,"date":"2026-03-24T22:07:35","date_gmt":"2026-03-24T22:07:35","guid":{"rendered":"https:\/\/www.tech-posts.com\/ja\/role-of-abstraction-in-system-design-ooad\/"},"modified":"2026-03-24T22:07:35","modified_gmt":"2026-03-24T22:07:35","slug":"role-of-abstraction-in-system-design-ooad","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/ja\/role-of-abstraction-in-system-design-ooad\/","title":{"rendered":"OOAD\u30ac\u30a4\u30c9\uff1a\u62bd\u8c61\u5316\u304c\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306b\u304a\u3044\u3066\u679c\u305f\u3059\u5f79\u5272"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chibi-style infographic illustrating the role of abstraction in system design: shows layered architecture (interface, business logic, data access, infrastructure), core OOAD principles, benefits like reduced cognitive load and easier testing, abstraction vs encapsulation comparison, and best practices including YAGNI principle, with cute chibi characters, car analogy, and colorful visual elements in 16:9 format\" decoding=\"async\" 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\u30b7\u30b9\u30c6\u30e0\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u304a\u3051\u308b\u62bd\u8c61\u5316\u306e\u30ec\u30d9\u30eb<\/h2>\n<p>\u30b7\u30b9\u30c6\u30e0\u306e\u7570\u306a\u308b\u90e8\u5206\u306f\u3001\u7570\u306a\u308b\u30ec\u30d9\u30eb\u306e\u62bd\u8c61\u5316\u3092\u5fc5\u8981\u3068\u3059\u308b\u3002\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306b\u7126\u70b9\u3092\u5f53\u3066\u305f\u9ad8\u30ec\u30d9\u30eb\u306e\u62bd\u8c61\u5316\u3092\u8981\u3059\u308b\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5c64\u306f\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u30b9\u30c8\u30ec\u30fc\u30b8\u52b9\u7387\u306b\u7126\u70b9\u3092\u5f53\u3066\u305f\u4f4e\u30ec\u30d9\u30eb\u306e\u62bd\u8c61\u5316\u3092\u5fc5\u8981\u3068\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u30ec\u30d9\u30eb\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u3068\u8cac\u4efb\u306e\u6574\u7406\u304c\u3057\u3084\u3059\u304f\u306a\u308b\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30ec\u30d9\u30eb<\/th>\n<th>\u7126\u70b9<\/th>\n<th>\u4f8b\u3068\u3057\u3066\u306e\u6982\u5ff5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/strong><\/td>\n<td>\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3<\/td>\n<td>\u30e6\u30fc\u30b6\u30fc\u304c\u898b\u305f\u308a\u547c\u3073\u51fa\u3057\u305f\u308a\u3059\u308b\u3082\u306e<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af<\/strong><\/td>\n<td>\u30d7\u30ed\u30bb\u30b9<\/td>\n<td>\u30eb\u30fc\u30eb\u3068\u30ef\u30fc\u30af\u30d5\u30ed\u30fc<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9<\/strong><\/td>\n<td>\u30b9\u30c8\u30ec\u30fc\u30b8<\/td>\n<td>\u53d6\u5f97\u3068\u6c38\u7d9a\u5316<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30a4\u30f3\u30d5\u30e9\u69cb\u9020<\/strong><\/td>\n<td>\u5b9f\u884c<\/td>\n<td>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3001OS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u308c\u3089\u306e\u30ec\u30d9\u30eb\u3092\u660e\u78ba\u306b\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5951\u7d04\u304c\u7dad\u6301\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u958b\u767a\u8005\u306f\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u305a\u306b\u30a4\u30f3\u30d5\u30e9\u69cb\u6210\u8981\u7d20\u3092\u4ea4\u63db\u3067\u304d\u308b\u3002<\/p>\n<h2>\ud83d\udee1\ufe0f \u6226\u7565\u7684\u62bd\u8c61\u5316\u306e\u5229\u70b9<\/h2>\n<p>\u62bd\u8c61\u5316\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306f\u3001\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3046\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306b\u5b9f\u8cea\u7684\u306a\u5229\u70b9\u3092\u3082\u305f\u3089\u3059\u3002\u3053\u308c\u3089\u306e\u5229\u70b9\u306f\u6642\u9593\u3068\u3068\u3082\u306b\u84c4\u7a4d\u3055\u308c\u3001\u6280\u8853\u7684\u8ca0\u50b5\u3092\u524a\u6e1b\u3057\u3001\u958b\u767a\u8005\u306e\u751f\u7523\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u3002<\/p>\n<ul>\n<li><strong>\u8a8d\u77e5\u8ca0\u8377\u306e\u4f4e\u6e1b\uff1a<\/strong>\u958b\u767a\u8005\u306f\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u306a\u304f\u3001\u7279\u5b9a\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u96c6\u4e2d\u3057\u3066\u4f5c\u696d\u3067\u304d\u308b\u3002\u5f7c\u3089\u304c\u7406\u89e3\u3059\u3079\u304d\u306f\u3001\u81ea\u8eab\u304c\u95a2\u308f\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u307f\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30c6\u30b9\u30c8\u306e\u5bb9\u6613\u5316\uff1a<\/strong>\u62bd\u8c61\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u3088\u308a\u30e2\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u304c\u53ef\u80fd\u306b\u306a\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u306e\u5916\u90e8\u4f9d\u5b58\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u304c\u884c\u3048\u308b\u3002<\/li>\n<li><strong>\u4fdd\u5b88\u6027\u306e\u5411\u4e0a\uff1a<\/strong>\u8981\u4ef6\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u3001\u5f71\u97ff\u306f\u7279\u5b9a\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u9650\u5b9a\u3055\u308c\u308b\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u4ed6\u306e\u90e8\u5206\u306f\u5909\u66f4\u304b\u3089\u4fdd\u8b77\u3055\u308c\u305f\u72b6\u614b\u3092\u4fdd\u3064\u3002<\/li>\n<li><strong>\u518d\u5229\u7528\u6027\u306e\u5411\u4e0a\uff1a<\/strong>\u6c4e\u7528\u7684\u306a\u62bd\u8c61\u5316\u306f\u3001\u7570\u306a\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u9593\u3067\u518d\u5229\u7528\u3067\u304d\u308b\u3002\u62bd\u8c61\u5316\u3092\u610f\u8b58\u3057\u3066\u8a2d\u8a08\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u5c64\u306f\u3001\u591a\u304f\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u9069\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/li>\n<li><strong>\u4e26\u884c\u958b\u767a\uff1a<\/strong>\u30c1\u30fc\u30e0\u306f\u7570\u306a\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u540c\u6642\u306b\u4f5c\u696d\u3067\u304d\u308b\u3002\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5408\u610f\u4e8b\u9805\u304c\u4e8b\u524d\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u7d71\u5408\u306e\u554f\u984c\u306f\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u308b\u3002<\/li>\n<\/ul>\n<h2>\u2699\ufe0f \u5b9f\u88c5\u6280\u8853<\/h2>\n<p>\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u62bd\u8c61\u5316\u3092\u9054\u6210\u3059\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u3042\u308b\u3002\u5404\u6280\u8853\u306f\u3001\u30c7\u30fc\u30bf\u306e\u6027\u8cea\u3084\u30e2\u30c7\u30eb\u5316\u3055\u308c\u308b\u632f\u308b\u821e\u3044\u306e\u7a2e\u985e\u306b\u5fdc\u3058\u3066\u3001\u7279\u5b9a\u306e\u76ee\u7684\u3092\u679c\u305f\u3059\u3002<\/p>\n<h3>1. \u62bd\u8c61\u30af\u30e9\u30b9<\/h3>\n<p>\u62bd\u8c61\u30af\u30e9\u30b9\u306f\u3001\u95a2\u9023\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d9\u30fc\u30b9\u69cb\u9020\u3092\u63d0\u4f9b\u3059\u308b\u3002\u5b9f\u88c5\u6e08\u307f\u306e\u30e1\u30bd\u30c3\u30c9\u3068\u3001\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u5b9a\u7fa9\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u62bd\u8c61\u30e1\u30bd\u30c3\u30c9\u306e\u4e21\u65b9\u3092\u542b\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u8907\u6570\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5171\u901a\u306e\u6a5f\u80fd\u3092\u5171\u6709\u3059\u308b\u304c\u3001\u7279\u5b9a\u306e\u5909\u5316\u3092\u8981\u3059\u308b\u5834\u5408\u306b\u6709\u7528\u3067\u3042\u308b\u3002<\/p>\n<h3>2. \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/h3>\n<p>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u5b9f\u88c5\u3092\u63d0\u4f9b\u305b\u305a\u306b\u5951\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u3053\u308c\u306f\u62bd\u8c61\u5316\u306e\u6700\u3082\u7d14\u7c8b\u306a\u5f62\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u4efb\u610f\u306e\u30af\u30e9\u30b9\u304c\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30b7\u30b0\u30cd\u30c1\u30e3\u306b\u5f93\u3046\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002\u3053\u308c\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u7d50\u5408\u3092\u7de9\u548c\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002<\/p>\n<h3>3. \u30c7\u30fc\u30bf\u62bd\u8c61\u5316<\/h3>\n<p>\u3053\u308c\u306f\u30c7\u30fc\u30bf\u306e\u5185\u90e8\u8868\u73fe\u3092\u96a0\u3059\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3002\u305f\u3068\u3048\u3070\u3001\u30ea\u30b9\u30c8\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u306f\u3001\u914d\u5217\u304b\u30ea\u30f3\u30af\u30ea\u30b9\u30c8\u3067\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u96a0\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u30c7\u30fc\u30bf\u306e\u5229\u7528\u8005\u306f\u3001\u9805\u76ee\u306e\u8ffd\u52a0\u3001\u524a\u9664\u3001\u53cd\u5fa9\u51e6\u7406\u306b\u306e\u307f\u95a2\u5fc3\u3092\u6301\u3064\u3002<\/p>\n<h3>4. \u30d7\u30ed\u30bb\u30b9\u62bd\u8c61\u5316<\/h3>\n<p>\u8907\u96d1\u306a\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u3088\u308a\u5c0f\u3055\u306a\u62bd\u8c61\u5316\u3055\u308c\u305f\u95a2\u6570\u3084\u30b5\u30fc\u30d3\u30b9\u306b\u5206\u89e3\u3055\u308c\u308b\u3002\u8ad6\u7406\u30d5\u30ed\u30fc\u5168\u4f53\u3092\u4e00\u3064\u306e\u5834\u6240\u306b\u8a18\u8ff0\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u9ad8\u30ec\u30d9\u30eb\u306e\u95a2\u6570\u304c\u4f4e\u30ec\u30d9\u30eb\u306e\u62bd\u8c61\u5316\u3055\u308c\u305f\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3002<\/p>\n<h2>\ud83d\udd04 \u62bd\u8c61\u5316 vs. \u30ab\u30d7\u30bb\u30eb\u5316<\/h2>\n<p>\u3057\u3070\u3057\u3070\u4e92\u63db\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u304c\u3001\u62bd\u8c61\u5316\u3068\u30ab\u30d7\u30bb\u30eb\u5316\u306f\u7570\u306a\u308b\u6982\u5ff5\u3067\u3042\u308b\u3002\u3053\u308c\u3089\u3092\u6df7\u540c\u3059\u308b\u3068\u3001\u60aa\u3044\u8a2d\u8a08\u6c7a\u5b9a\u306b\u3064\u306a\u304c\u308b\u3002\u30ab\u30d7\u30bb\u30eb\u5316\u306f\u30c7\u30fc\u30bf\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u307e\u3068\u3081\u3066\u30a2\u30af\u30bb\u30b9\u3092\u5236\u9650\u3059\u308b\u3053\u3068\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u306e\u306b\u5bfe\u3057\u3001\u62bd\u8c61\u5316\u306f\u5fc5\u9808\u306e\u6a5f\u80fd\u306e\u307f\u3092\u516c\u958b\u3059\u308b\u3053\u3068\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6a5f\u80fd<\/th>\n<th>\u62bd\u8c61\u5316<\/th>\n<th>\u30ab\u30d7\u30bb\u30eb\u5316<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u5b9a\u7fa9<\/strong><\/td>\n<td>\u5b9f\u88c5\u306e\u8a73\u7d30\u3092\u96a0\u3059<\/td>\n<td>\u30c7\u30fc\u30bf\u3068\u30e1\u30bd\u30c3\u30c9\u3092\u675f\u306d\u308b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7126\u70b9<\/strong><\/td>\n<td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u4f55\u3092\u3059\u308b\u304b<\/td>\n<td>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u76ee\u7684<\/strong><\/td>\n<td>\u8907\u96d1\u3055\u3092\u8efd\u6e1b\u3059\u308b<\/td>\n<td>\u5185\u90e8\u72b6\u614b\u3092\u4fdd\u8b77\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5b9f\u88c5<\/strong><\/td>\n<td>\u62bd\u8c61\u30af\u30e9\u30b9\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/td>\n<td>\u30a2\u30af\u30bb\u30b9\u4fee\u98fe\u5b50\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u5909\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3053\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3092\u9069\u5207\u306a\u5834\u9762\u3067\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u30ab\u30d7\u30bb\u30eb\u5316\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u8b77\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001\u62bd\u8c61\u5316\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u306e\u3084\u308a\u53d6\u308a\u3092\u7c21\u7d20\u5316\u3059\u308b\u3002<\/p>\n<h2>\u26a0\ufe0f \u904e\u5270\u306a\u62bd\u8c61\u5316\u306e\u30ea\u30b9\u30af<\/h2>\n<p>\u62bd\u8c61\u5316\u306f\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3060\u304c\u3001\u30ea\u30b9\u30af\u3092\u4f34\u3046\u3002\u904e\u5ea6\u306a\u62bd\u8c61\u5316\u306f\u6df7\u4e71\u3084\u786c\u76f4\u6027\u3092\u62db\u304f\u3002\u8a2d\u8a08\u8005\u306f\u3001\u5fc5\u8981\u306b\u306a\u308b\u524d\u306b\u62bd\u8c61\u5316\u3092\u4f5c\u6210\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u3053\u308c\u306f\u300c\u904e\u5ea6\u306a\u62bd\u8c61\u5316\u300d\u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u7406\u89e3\u306e\u8907\u96d1\u3055\uff1a<\/strong> \u62bd\u8c61\u5316\u306e\u5c64\u304c\u6df1\u3059\u304e\u308b\u3068\u3001\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u8ffd\u8de1\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u304f\u306a\u308b\u3002\u30c7\u30d0\u30c3\u30b0\u306b\u306f\u8907\u6570\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u7d4c\u7531\u3057\u3066\u9032\u3080\u5fc5\u8981\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\uff1a<\/strong> \u9593\u63a5\u547c\u3073\u51fa\u3057\u3084\u4eee\u60f3\u30e1\u30bd\u30c3\u30c9\u306e\u30c7\u30a3\u30b9\u30d1\u30c3\u30c1\u306f\u9045\u5ef6\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u304c\u3001I\/O\u64cd\u4f5c\u3068\u6bd4\u3079\u308c\u3070\u591a\u304f\u306e\u5834\u5408\u7121\u8996\u3067\u304d\u308b\u7a0b\u5ea6\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u67d4\u8edf\u6027\u306e\u4f4e\u4e0b\uff1a<\/strong> \u9ad8\u5ea6\u306b\u62bd\u8c61\u5316\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u306f\u786c\u76f4\u5316\u3057\u3084\u3059\u3044\u3002\u62bd\u8c61\u5316\u304c\u3057\u3059\u304e\u308b\u3068\u3001\u5c06\u6765\u306e\u8981\u4ef6\u306b\u5bfe\u5fdc\u3067\u304d\u305a\u3001\u5927\u5e45\u306a\u518d\u8a2d\u8a08\u3092\u4f59\u5100\u306a\u304f\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u65b0\u898f\u958b\u767a\u8005\u306e\u6df7\u4e71\uff1a<\/strong> \u904e\u5ea6\u306b\u62bd\u8c61\u5316\u3055\u308c\u305f\u30ec\u30a4\u30e4\u30fc\u3092\u6301\u3064\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u7406\u89e3\u3057\u3088\u3046\u3068\u3059\u308b\u65b0\u898f\u30e1\u30f3\u30d0\u30fc\u306b\u3068\u3063\u3066\u5a01\u5727\u7684\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f \u5b9f\u88c5\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<p>\u62bd\u8c61\u5316\u306e\u5229\u70b9\u3092\u6700\u5927\u5316\u3057\u3064\u3064\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u3001\u8a2d\u8a08\u6bb5\u968e\u3067\u4ee5\u4e0b\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3046\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>YAGNI\u539f\u5247\uff1a<\/strong> \u307e\u3060\u5b58\u5728\u3057\u306a\u3044\u8981\u4ef6\u306e\u305f\u3081\u306b\u8a2d\u8a08\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u62bd\u8c61\u5316\u306f\u73fe\u5728\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u4eee\u60f3\u7684\u306a\u5c06\u6765\u306e\u554f\u984c\u3092\u60f3\u5b9a\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u3044\u3002<\/li>\n<li><strong>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5c0f\u3055\u304f\u4fdd\u3064\uff1a<\/strong> \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306f\u72ed\u304f\u3001\u7126\u70b9\u3092\u7d5e\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u4e00\u3064\u306e\u95a2\u5fc3\u4e8b\u3054\u3068\u306b\u4e00\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u65b9\u304c\u3001\u6570\u5341\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3064\u5de8\u5927\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3088\u308a\u3082\u826f\u3044\u3053\u3068\u304c\u591a\u3044\u3002<\/li>\n<li><strong>\u5951\u7d04\u3092\u6587\u66f8\u5316\u3059\u308b\uff1a<\/strong>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u4fdd\u8a3c\u3059\u308b\u5185\u5bb9\u3092\u660e\u78ba\u306b\u6587\u66f8\u5316\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u62bd\u8c61\u5316\u3092\u4f7f\u7528\u3059\u308b\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u306e\u771f\u5b9f\u306e\u6839\u62e0\u3068\u306a\u308b\u3002<\/li>\n<li><strong>\u5b9f\u88c5\u306b\u306f\u5177\u4f53\u7684\u306a\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong>\u5b9f\u88c5\u306e\u8a73\u7d30\u3092\u5358\u7d14\u306b\u4fdd\u3064\u3002\u5358\u7d14\u306a\u30ed\u30b8\u30c3\u30af\u3092\u8907\u96d1\u306a\u62bd\u8c61\u5316\u306e\u80cc\u5f8c\u306b\u96a0\u3055\u306a\u3044\u3002<\/li>\n<li><strong>\u5b9a\u671f\u7684\u306b\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3059\u308b\uff1a<\/strong> 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