[B! 設計] syo-sa19820615のブックマーク

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href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/development/" > development </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/github/" > github </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/go/" > go </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/Java/" > Java </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/Togetter/" > Togetter </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/UML/" > UML </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/web%E3%82%B5%E3%83%BC%E3%83%93%E3%82%B9/" > webサービス </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/XML/" > XML </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%81%82%E3%81%A8%E3%81%A7%E8%AA%AD%E3%82%80/" > あとで読む </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%82%A2%E3%83%BC%E3%82%AD%E3%83%86%E3%82%AF%E3%83%81%E3%83%A3/" > アーキテクチャ </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%82%A8%E3%83%B3%E3%82%B8%E3%83%8B%E3%82%A2/" > エンジニア </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%82%AF%E3%83%A9%E3%82%B9%E8%A8%AD%E8%A8%88/" > クラス設計 </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%82%B2%E3%83%BC%E3%83%A0/" > ゲーム </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%82%BD%E3%83%BC%E3%82%B7%E3%83%A3%E3%83%AB%E3%82%B2%E3%83%BC%E3%83%A0/" > ソーシャルゲーム </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%83%87%E3%83%BC%E3%82%BF%E3%83%99%E3%83%BC%E3%82%B9/" > データベース </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%83%8D%E3%83%83%E3%83%88%E3%83%AF%E3%83%BC%E3%82%AF/" > ネットワーク </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0/" > プログラミング </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0/" > プログラム </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E3%83%A2%E3%83%87%E3%83%AA%E3%83%B3%E3%82%B0/" > モデリング </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E4%BB%95%E4%BA%8B/" > 仕事 </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E6%80%9D%E8%80%83/" > 思考 </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E8%A8%AD%E5%AE%9A/" > 設定 </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E8%AB%96%E7%90%86%E8%A8%AD%E8%A8%88/" > 論理設計 </a> </li> <li> <a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/%E9%96%8B%E7%99%BA/" > 開発 </a> </li> </ul> <p class="centerarticle-sub-navi-more"> <a href="/syo-sa19820615/bookmark">タグの絞り込みを解除</a> </p> </div> </div> <div class="center-container"> <div class="centerarticle-title-container"> <h2 class="centerarticle-title"> 設計に関するsyo-sa19820615のブックマーク (35) </h2> </div> <div class="js-user-bookmark-item-autoload-container" data-next-page-path="/syo-sa19820615/%E8%A8%AD%E8%A8%88/?page=2" data-next-xhr-path="/api/users/syo-sa19820615/bookmarks?tag=%E8%A8%AD%E8%A8%88&page=2" data-next-label="次のページ" > <script type="text/x-template" id="template-short-url-click"> {{#tweet_url}} <a href="{{tweet_url}}" target="_blank" rel="noopener noreferrer" data-gtm-click-label="reaction-twitter-clicks"><span>{{count}} clicks</span></a> {{/tweet_url}} {{^tweet_url}} <span>{{count}} clicks</span> {{/tweet_url}} </script> <script type="text/x-template" id="template-bookmark-item"> {{^is_wiped}} <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="{{url}}"> <div class="centerarticle-entry {{#has_image}}is-image-entry-unit{{/has_image}}"> <h3 class="centerarticle-entry-title"> <a href="{{url}}" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener{{#noreferrer}} noreferrer{{/noreferrer}}" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="{{favicon_url}}" alt="">{{title}}</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="{{page_url}}" class="js-keyboard-entry-page-openable" title="{{title}} ({{total_bookmarks}}ブックマーク)" data-gtm-click-label="user-bookmark-users">{{total_bookmarks_with_user_postfix}}</a> </span> </li> <li> <a href="/syo-sa19820615/{{url_query}}" title="『{{root_title}}』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> {{root_title}} </a> </li> {{#is_categorized}} <li><a href="{{category_path}}" data-gtm-click-label="user-bookmark-category">{{category_title}}</a></li> {{/is_categorized}} </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">{{{summary_with_keyword_links}}}</p> {{#has_image}} <a href="{{canonical_url}}" class="centerarticle-entry-image" target="_blank" rel="noopener{{#noreferrer}} noreferrer{{/noreferrer}}" data-gtm-click-label="user-bookmark-thumb"> <img src="{{image_url}}" alt="{{title}}"> </a> {{/has_image}} </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-{{location_id}}"> <div class="centerarticle-reaction-comment js-user-bookmark-comment {{badge_icon}}" data-url="{{url}}" data-user-name="{{author_name}}"> <a href="{{top_page_path}}" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="{{profile_icon_url}}" alt="{{author_name}}" title="{{author_name}}" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="{{anchor_url}}" class="js-anchor-path" data-gtm-click-label="user-reaction-username">{{author_name}}</a></span> <span class="centerarticle-reaction-timestamp">{{created}}</span> <span class="js-private-icon status {{#is_public}}is-hidden{{/is_public}}"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment">{{{comment_expanded}}}</span> <ul class="centerarticle-reaction-tags js-tag-text"> {{#tags}} <li><a href="/{{author_name}}/{{escaped_label}}/" data-gtm-click-label="user-reaction-tag">{{label}}</a></li> {{/tags}} </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="{{#is_bookmark}}comment-permalink{{/is_bookmark}}{{^is_bookmark}}original-permalink{{/is_bookmark}} js-comment-permalink"> <a href="{{comment_page_path}}" data-gtm-click-label="user-reaction-permalink" rel="{{#should_nofollow}}nofollow{{/should_nofollow}}">{{#is_bookmark}}リスト{{/is_bookmark}}{{^is_bookmark}}リンク{{/is_bookmark}}</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> {{#following_bookmarks}} <li> <a href="{{anchor_url}}" class="following-bookmark-link" data-gtm-click-label="user-bookmark-following-bookmarker-icon"> <img src="{{profile_icon_url}}" alt="{{author_name}}" class="following-bookmark-icon" > </a> <span class="following-bookmark-popup"> <span class="following-bookmark-username">{{author_name}}</span><span class="following-bookmark-timestamp">{{created}}</span> <span class="following-bookmark-text"> {{ #comment }}<span class="following-bookmark-comment">{{ comment }}</span>{{ /comment }} <ul class="following-bookmark-tags"> {{ #tags }}<li>{{ label }}</li>{{ /tags }} </ul> </span> </span> </li> {{/following_bookmarks}} {{#following_bookmarks.length}} <li class="centerarticle-reaction-following-more"><button type="button" class="js-show-all-following-bookmarks" data-gtm-click-label="user-bookmark-showall-following-bookmarks">すべて表示</button></li> {{/following_bookmarks.length}} </ul> <div class="js-user-following-bookmarks-detail is-hidden"> {{#following_bookmarks}} <div class="centerarticle-reaction-comment js-user-bookmark-comment {{badge_icon}}" data-url="{{url}}" data-user-name="{{author_name}}"> <a href="{{top_page_path}}" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="{{profile_icon_url}}" alt="{{author_name}}" title="{{author_name}}" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="{{anchor_url}}" class="js-anchor-path" data-gtm-click-label="user-reaction-username">{{author_name}}</a></span> <span class="centerarticle-reaction-timestamp">{{created}}</span> <span class="js-private-icon status {{#is_public}}is-hidden{{/is_public}}"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment">{{{comment_expanded}}}</span> <ul class="centerarticle-reaction-tags js-tag-text"> {{#tags}} <li><a href="/{{author_name}}/{{escaped_label}}/" data-gtm-click-label="user-reaction-tag">{{label}}</a></li> {{/tags}} </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="{{#is_bookmark}}comment-permalink{{/is_bookmark}}{{^is_bookmark}}original-permalink{{/is_bookmark}} js-comment-permalink"> <a href="{{comment_page_path}}" data-gtm-click-label="user-reaction-permalink" rel="{{#should_nofollow}}nofollow{{/should_nofollow}}">{{#is_bookmark}}リスト{{/is_bookmark}}{{^is_bookmark}}リンク{{/is_bookmark}}</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> {{/following_bookmarks}} </div> </li> {{/is_wiped}} </script> <script type="text/x-template" id="template-following-bookmarker-icon"> <li> <a href="{{anchor_url}}" class="following-bookmark-link" data-gtm-click-label="user-bookmark-following-bookmarker-icon"> <img src="{{profile_icon_url}}" alt="{{author_name}}" class="following-bookmark-icon" > </a> <span class="following-bookmark-popup"> <span class="following-bookmark-username">{{author_name}}</span><span class="following-bookmark-timestamp">{{created}}</span> <span class="following-bookmark-text"> {{ #comment }}<span class="following-bookmark-comment">{{ comment }}</span>{{ /comment }} <ul class="following-bookmark-tags"> {{ #tags }}<li>{{ label }}</li>{{ /tags }} </ul> </span> </span> </li> </script> <script type="text/x-template" id="template-bookmark-item-editor"> <div class="centerarticle-entry {{#has_image}}is-image-entry-unit{{/has_image}}"> <h3 class="centerarticle-entry-title"> <a href="{{url}}" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener{{#noreferrer}} noreferrer{{/noreferrer}}" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="{{favicon_url}}" alt="">{{title}}</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="{{page_url}}" class="js-keyboard-entry-page-openable" title="{{title}} ({{total_bookmarks}}ブックマーク)" data-gtm-click-label="user-bookmark-users">{{total_bookmarks_with_user_postfix}}</a> </span> </li> <li> <a href="/syo-sa19820615/{{url_query}}" title="『{{root_title}}』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> {{root_title}} </a> </li> {{#is_categorized}} <li><a href="{{category_path}}" data-gtm-click-label="user-bookmark-category">{{category_title}}</a></li> {{/is_categorized}} </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">{{{summary_with_keyword_links}}}</p> {{#has_image}} <a href="{{canonical_url}}" class="centerarticle-entry-image" target="_blank" rel="noopener{{#noreferrer}} noreferrer{{/noreferrer}}" data-gtm-click-label="user-bookmark-thumb"> <img src="{{image_url}}" alt="{{title}}"> </a> {{/has_image}} </div> 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href="https://zenn.dev/yamakii/articles/dd9171e85e8633" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fzenn.dev%2Fyamakii%2Farticles%2Fdd9171e85e8633" alt="">データモデリングとドメイン駆動設計</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/zenn.dev/yamakii/articles/dd9171e85e8633" class="js-keyboard-entry-page-openable" title="データモデリングとドメイン駆動設計 (72ブックマーク)" data-gtm-click-label="user-bookmark-users">72 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fzenn.dev%2Fyamakii" title="『zenn.dev/yamakii』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> zenn.dev/yamakii </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">渡辺幸三氏のデータモデル大全を読みました。業務システムを扱う<a data-gtm-click-label="entry-summary-keyword" href="/q/%E3%82%A8%E3%83%B3%E3%82%B8%E3%83%8B%E3%82%A2">エンジニア</a>であれば必読と言える書なのでぜひ読んでみてください。ドメイン駆動設計に関する課題感さて、これを読みながらここ数年ドメイン駆動設計に感じていた課題を言語化してみました。それは、「ドメイン駆動設計で語られるモデリングの領域がプログラミングに関するものに限定されすぎている」という点です。これは「データの入出力[1]はドメインの主要な関心事ではない」というような主張にみられます。確かにデータの入出力に関心を払わなければプログラミングに関心事を集中できます。しかし、それはデータモデル大全の中で指摘しているようなプロセス中心のあり方という指摘そのものだと感じました。コアドメインに集中するエリック・<a data-gtm-click-label="entry-summary-keyword" href="/q/%E3%82%A8%E3%83%B4%E3%82%A1">エヴァ</a>ンスのドメイン駆動設計の中では「コアドメイン」に集中することの重要さを説いています。確かに、事業にとって事業価値</p> <a href="https://zenn.dev/yamakii/articles/dd9171e85e8633" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img 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src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/%E3%81%82%E3%81%A8%E3%81%A7%E8%AA%AD%E3%82%80/" data-gtm-click-label="user-reaction-tag">あとで読む</a></li> <li><a href="/syo-sa19820615/db/" data-gtm-click-label="user-reaction-tag">db</a></li> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/4689667976311755490/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul 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data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/4689634811628913122/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://qiita.com/Saku731/items/741fcf0f40dd989ee4f8"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://qiita.com/Saku731/items/741fcf0f40dd989ee4f8" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fqiita.com%2FSaku731%2Fitems%2F741fcf0f40dd989ee4f8" alt="">要件定義～システム設計ができる人材になれる記事 - Qiita</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/qiita.com/Saku731/items/741fcf0f40dd989ee4f8" class="js-keyboard-entry-page-openable" title="要件定義～システム設計ができる人材になれる記事 - Qiita (1302ブックマーク)" data-gtm-click-label="user-bookmark-users">1302 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fqiita.com%2FSaku731" title="『qiita.com/Saku731』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> qiita.com/Saku731 </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">はじめに株式会社デジサクがお送りするプログラミング記事、今回は要件定義・システム設計について扱っていこうと思います。プログラミングを勉強していて、こんな事を感じた経験はないでしょうか。「勉強してもプロダクトが作れない」「そもそも開発ってどうやるの？」「要件定義ってなに？」その悩みを解決するために、まずは開発の全体感を理解しましょう。下図『ソフトウェア開発プロセス』をご覧くださいいつも勉強しているプログラミングは『実装』の部分に該当します。つまり、プログラミングの実力を発揮する前に４つも壁が存在するのです。そのため、<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>記事では実装（プログラミング）を開始する前に必要となる、『企画～設計』について順を追って説明して行きます。特に、<a data-gtm-click-label="entry-summary-keyword" href="/q/%E3%82%A8%E3%83%B3%E3%82%B8%E3%83%8B%E3%82%A2">エンジニア</a>が理解しておくべき『要件定義』『設計』にフォーカスします。なお、開発全体において実装（プログラミング）に使用する時間</p> <a href="https://qiita.com/Saku731/items/741fcf0f40dd989ee4f8" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/62fe0ef980b10e2cee74ec1a66eaf85c1f73dad6/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9JUU4JUE2JTgxJUU0JUJCJUI2JUU1JUFFJTlBJUU3JUJFJUE5JUVGJUJEJTlFJUUzJTgyJUI3JUUzJTgyJUI5JUUzJTgzJTg2JUUzJTgzJUEwJUU4JUE4JUFEJUU4JUE4JTg4JUUzJTgxJThDJUUzJTgxJUE3JUUzJTgxJThEJUUzJTgyJThCJUU0JUJBJUJBJUU2JTlEJTkwJUUzJTgxJUFCJUUzJTgxJUFBJUUzJTgyJThDJUUzJTgyJThCJUU4JUE4JTk4JUU0JUJBJThCJnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnR4dC1jb2xvcj0lMjMxRTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmcz0wMTViYzM5OThiZjkxNTE2ZThlNWY2NDQwNTQyMTM1MQ%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBTYWt1NzMxJnR4dC1jb2xvcj0lMjMxRTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz03YzA3ZmM0MzczMDM0YTgzYmNkNmFhNzU4MDNhYjYyYg%26blend-x%3D142%26blend-y%3D486%26blend-mode%3Dnormal%26s%3D13afb6d0addabf82c4e4f0f7ec955a55" alt="要件定義～システム設計ができる人材になれる記事 - Qiita"> </a> </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-4679921765179322370"> <div class="centerarticle-reaction-comment js-user-bookmark-comment " data-url="https://qiita.com/Saku731/items/741fcf0f40dd989ee4f8" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20200112#bookmark-4679921765179322370" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2020/01/12</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/4679921765179322370/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://qiita.com/MinoDriven/items/37599172b2cd27c38a33"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://qiita.com/MinoDriven/items/37599172b2cd27c38a33" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fqiita.com%2FMinoDriven%2Fitems%2F37599172b2cd27c38a33" alt="">関心の分離を意識した名前設計で巨大クラスを爆殺する - Qiita</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/qiita.com/MinoDriven/items/37599172b2cd27c38a33" class="js-keyboard-entry-page-openable" title="関心の分離を意識した名前設計で巨大クラスを爆殺する - Qiita (181ブックマーク)" data-gtm-click-label="user-bookmark-users">181 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fqiita.com%2FMinoDriven" title="『qiita.com/MinoDriven』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> qiita.com/MinoDriven </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">大量のメソッドを保有し、数千、数万行単位にぶくぶく膨れ上がった巨大クラス。別名「神クラス」とも「大きな泥団子」とも呼ばれる、長大で複雑で、様々なクラスと密結合で極めて変更が困難なアイツ。そんな巨大クラスの退治に有効な、命名に関する考え方を紹介致します。解決したい課題、狙う効果数千、数万行単位の巨大クラスの登場を抑止する。巨大クラスを爆砕し、小さなクラス群に分割する。クラス結合度を下げ、影響範囲を小さくすることで保守コストや変更コストを下げる。ダメな例例えばECサイトの「商品」を考えてみます。よくありがちなのは、商品をそのまま「商品クラス」と設計してしまうこと。単純な商品クラスは、往々にして出品、予約、注文、発送など、様々なユースケースのクラスと結合してしまいがちです。商品クラス自体も、結合したクラスに関連する知識(ロジック)を持ち始め、どんどん巨大化複雑化していきます。</p> <a href="https://qiita.com/MinoDriven/items/37599172b2cd27c38a33" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img 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alt="関心の分離を意識した名前設計で巨大クラスを爆殺する - Qiita"> </a> </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-4676121535501739906"> <div class="centerarticle-reaction-comment js-user-bookmark-comment " data-url="https://qiita.com/MinoDriven/items/37599172b2cd27c38a33" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20191021#bookmark-4676121535501739906" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2019/10/21</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/%E9%96%8B%E7%99%BA/" data-gtm-click-label="user-reaction-tag">開発</a></li> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/4676121535501739906/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://scrapbox.io/kawasima/%E4%BA%88%E7%B4%84"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://scrapbox.io/kawasima/%E4%BA%88%E7%B4%84" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fscrapbox.io%2Fkawasima%2F%25E4%25BA%2588%25E7%25B4%2584" alt="">予約 - kawasima</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/scrapbox.io/kawasima/%E4%BA%88%E7%B4%84" class="js-keyboard-entry-page-openable" title="予約 - kawasima (10ブックマーク)" data-gtm-click-label="user-bookmark-users">10 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fscrapbox.io%2Fkawasima%2F" title="『scrapbox.io/kawasima』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> scrapbox.io/kawasima </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">限定販売など多くのトラフィックが一斉に集中する場合は、整理券を配り順番に予約・販売システムに流す。それ以外のリクエストは入り口で待たせるか503を返す。</p> <a href="https://scrapbox.io/kawasima/%E4%BA%88%E7%B4%84" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/0bc99c212022d75ae4e0d6d2cbdc1918ddebc3c6/height=288;version=1;width=512/https%3A%2F%2Fgyazo.com%2F4faf76ad1c367fcd81247f71f4637f6d%2Fmax_size%2F1000" alt="予約 - kawasima"> </a> </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-4670785654228762882"> <div class="centerarticle-reaction-comment js-user-bookmark-comment " data-url="https://scrapbox.io/kawasima/%E4%BA%88%E7%B4%84" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20190628#bookmark-4670785654228762882" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2019/06/28</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/4670785654228762882/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://qiita.com/kiyodori/items/5083ad8bbfc232d01827"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://qiita.com/kiyodori/items/5083ad8bbfc232d01827" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fqiita.com%2Fkiyodori%2Fitems%2F5083ad8bbfc232d01827" alt="">DB論理設計のノウハウ - Qiita</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/qiita.com/kiyodori/items/5083ad8bbfc232d01827" class="js-keyboard-entry-page-openable" title="DB論理設計のノウハウ - Qiita (89ブックマーク)" data-gtm-click-label="user-bookmark-users">89 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fqiita.com%2Fkiyodori" title="『qiita.com/kiyodori』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> qiita.com/kiyodori </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">Deleted art<a data-gtm-click-label="entry-summary-keyword" href="/q/ICL">icl</a>es cannot be recovered. Draft of this art<a data-gtm-click-label="entry-summary-keyword" href="/q/ICL">icl</a>e would be also deleted. 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Qiita</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/qiita.com/MinoDriven/items/2a378a09638e234d8614" class="js-keyboard-entry-page-openable" title="役割駆動設計で巨大クラスを爆殺する - Qiita (299ブックマーク)" data-gtm-click-label="user-bookmark-users">299 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fqiita.com%2FMinoDriven" title="『qiita.com/MinoDriven』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> qiita.com/MinoDriven </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">大量のメソッドを保有し、数千、数万行単位にぶくぶく膨れ上がった巨大クラス。別名「神クラス」とも「大きな泥団子」とも呼ばれる、長大で複雑で密結合で極めて変更が困難なアイツ。そんな巨大クラスの退治に有効な、ドメイン駆動設計を基<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>思想とする「役割駆動設計」を紹介致します。解決したい課題、狙う効果数千、数万行単位の巨大クラスの登場を抑止する。小さくシンプルな構造に落とし込み、堅牢で変更容易性の高い設計へ昇華させる。例１：筆者をモデリング分かりやすくなるよう、まず私を例にモデリングしてみます。私は以下のような特徴があります。 <a data-gtm-click-label="entry-summary-keyword" href="/q/it">IT</a>企業の従業員家族がいる(<a data-gtm-click-label="entry-summary-keyword" href="/q/%E5%A6%BB">妻</a>, 子供) <a data-gtm-click-label="entry-summary-keyword" href="/q/%E8%B6%A3%E5%91%B3">趣味</a>で<a data-gtm-click-label="entry-summary-keyword" href="/q/%E3%82%B2%E3%83%BC%E3%83%A0">ゲーム</a>制作しているダメな設計何も考えずに人クラスとして設計すると、よく以下のような構造になりがちです。従業員として<a data-gtm-click-label="entry-summary-keyword" href="/q/%E4%BB%95%E4%BA%8B">仕事</a>をする、父親として家族サービスする、<a data-gtm-click-label="entry-summary-keyword" href="/q/%E8%B6%A3%E5%91%B3">趣味</a>として<a data-gtm-click-label="entry-summary-keyword" href="/q/%E3%82%B2%E3%83%BC%E3%83%A0">ゲーム</a>制作する、それぞれのメソッドが備わってい</p> <a href="https://qiita.com/MinoDriven/items/2a378a09638e234d8614" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/e3f0d309bd1fe217bf7d14c37ecc1dfd7e3d4612/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9JUU1JUJEJUI5JUU1JTg5JUIyJUU5JUE3JTg2JUU1JThCJTk1JUU4JUE4JUFEJUU4JUE4JTg4JUUzJTgxJUE3JUU1JUI3JUE4JUU1JUE0JUE3JUUzJTgyJUFGJUUzJTgzJUE5JUUzJTgyJUI5JUUzJTgyJTkyJUU3JTg4JTg2JUU2JUFFJUJBJUUzJTgxJTk5JUUzJTgyJThCJnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmcz1iMDcyZTAyNDBiNGY2NzA5NTgzZGYyNGM4Nzk2MTY3Mw%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBNaW5vRHJpdmVuJnR4dC1jb2xvcj0lMjMyMTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9MzYmdHh0LWFsaWduPWxlZnQlMkN0b3Amcz00MTZmMWU0NzBlYzY3YzU2MmRmMzkwOWJmNzc5ZjI0NA%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4gUkVBRFlGT1LmoKrlvI_kvJrnpL4%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3D5f4a690f059ea23a2957a3eb0ef0135f" alt="役割駆動設計で巨大クラスを爆殺する - 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is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://nekogata.hatenablog.com/entry/2018/09/10/163206" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fnekogata.hatenablog.com%2Fentry%2F2018%2F09%2F10%2F163206" alt="">実況中継シリーズ「開発現場で役立たせるための設計原則とパターン」 #builderscon 2018 - 猫型の蓄音機は 1 分間に 45 回にゃあと鳴く</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/nekogata.hatenablog.com/entry/2018/09/10/163206" class="js-keyboard-entry-page-openable" title="実況中継シリーズ「開発現場で役立たせるための設計原則とパターン」 #builderscon 2018 - 猫型の蓄音機は 1 分間に 45 回にゃあと鳴く (1140ブックマーク)" data-gtm-click-label="user-bookmark-users">1140 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fnekogata.hatenablog.com%2F" title="『nekogata.hatenablog.com』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> nekogata.hatenablog.com </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">先日慶應義塾大学日吉キャンパスで行われた <a data-gtm-click-label="entry-summary-keyword" href="/q/Build">build</a>erscon2018、最高のカンファレンスでしたね。わたしも「開発現場で役立たせるための設計原則とパターン」というタイトルで発表させていただきました。今回は恒例「実況中継シリーズ」として、プレゼンの再現をブログで行いたいと思います。なお、過去の実況中継シリーズは前職の<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%8A%80%E8%A1%93">技術</a>ブログにまとまっていますので、そちらからご覧ください。それでは<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>編を開始したいと思います。開発現場で役立たせるための設計原則とパターンアバンパートよろしくお願いします。まず最初に簡単に自己紹介をさせていただきます。先月<a data-gtm-click-label="entry-summary-keyword" href="/q/%E8%BB%A2%E8%81%B7">転職</a>をしまして、8/1からClassiという会社で働いています。<a data-gtm-click-label="entry-summary-keyword" href="/q/%E5%A6%BB">妻</a>と息子がおります。<a data-gtm-click-label="entry-summary-keyword" href="/q/Scala">Scala</a>が好きですが、<a data-gtm-click-label="entry-summary-keyword" href="/q/%E4%BB%95%E4%BA%8B">仕事</a>では<a data-gtm-click-label="entry-summary-keyword" href="/q/ruby">Ruby</a>メインという感じです。 Web+<a data-gtm-click-label="entry-summary-keyword" href="/q/DB">DB</a> PressやSoftware Designで何度か特集を書かせていただきました。と</p> <a href="https://nekogata.hatenablog.com/entry/2018/09/10/163206" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/0e3bff828e108de80d7af4a6fe1d1ac581e2ea14/height=288;version=1;width=512/https%3A%2F%2Fcdn.image.st-hatena.com%2Fimage%2Fscale%2F087a881e21d6cc50fed057c57a2217cc3dfc577c%2Fbackend%3Dimagemagick%3Bheight%3D1300%3Bversion%3D1%3Bwidth%3D1300%2Fhttps%253A%252F%252Fcdn-ak.f.st-hatena.com%252Fimages%252Ffotolife%252Fn%252Fnkgt_chkonk%252F20180910%252F20180910095647.png" alt="実況中継シリーズ「開発現場で役立たせるための設計原則とパターン」 #builderscon 2018 - 猫型の蓄音機は 1 分間に 45 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alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/370764118/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://employment.en-japan.com/engineerhub/entry/2018/01/17/110000"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://employment.en-japan.com/engineerhub/entry/2018/01/17/110000" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fen-ambi.com%2Fitcontents%2Fentry%2F2018%2F01%2F17%2F110000%2F" alt="">Androidアーキテクチャことはじめ ― 選定する意味と、MVP、Clean Architecture、MVVM、Fluxの特徴を理解する｜ハイクラス転職・求人情報サイト AMBI（アンビ）</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/en-ambi.com/itcontents/entry/2018/01/17/110000/" class="js-keyboard-entry-page-openable" title="Androidアーキテクチャことはじめ ― 選定する意味と、MVP、Clean 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data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20180707#bookmark-354720602" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2018/07/07</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/android/" data-gtm-click-label="user-reaction-tag">android</a></li> <li><a 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data-url="https://employment.en-japan.com/engineerhub/entry/2018/06/22/110000" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20180625#bookmark-366250391" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2018/06/25</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags 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js-user-bookmark-item js-intent-share-bookmark" data-target-url="http://qiita.com/mserizawa/items/b833e407d89abd21ee72"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="http://qiita.com/mserizawa/items/b833e407d89abd21ee72" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fqiita.com%2Fmserizawa%2Fitems%2Fb833e407d89abd21ee72" alt="">翻訳: WebAPI 設計のベストプラクティス - Qiita</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/qiita.com/mserizawa/items/b833e407d89abd21ee72" class="js-keyboard-entry-page-openable" title="翻訳: WebAPI 設計のベストプラクティス - Qiita (1127ブックマーク)" data-gtm-click-label="user-bookmark-users">1127 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fqiita.com%2Fmserizawa" title="『qiita.com/mserizawa』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> qiita.com/mserizawa </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">Deleted art<a data-gtm-click-label="entry-summary-keyword" href="/q/ICL">icl</a>es cannot be recovered. Draft of this art<a data-gtm-click-label="entry-summary-keyword" href="/q/ICL">icl</a>e would be also deleted. Are you sure you want to delete this art<a data-gtm-click-label="entry-summary-keyword" href="/q/ICL">icl</a>e? これは Enchant の開発者である Vinay Sahni さんが書いた記事「Best Practices for Designing a Pragmatic RESTful <a data-gtm-click-label="entry-summary-keyword" href="/q/API">API</a>」1を、ご<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>人の許可を得て翻訳したものです。 RESTful な Web<a data-gtm-click-label="entry-summary-keyword" href="/q/API">API</a> を設計しようとすると、細かなところで長考したり議論したりすると思います。また、他の <a data-gtm-click-label="entry-summary-keyword" href="/q/API">API</a> に倣ってやってはみたものの、<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>当にそれでいいのか、どうしてそうしているのか分からない、何てことも少なくはないと思います。この記事では、そのようなハマリどころについて Vinay さん</p> <a href="https://qiita.com/mserizawa/items/b833e407d89abd21ee72" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/addd0fc3927d46e91d2c43dc08d5226221194814/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fqiita-user-contents.imgix.net%252Fhttps%25253A%25252F%25252Fcdn.qiita.com%25252Fassets%25252Fpublic%25252Farticle-ogp-background-afbab5eb44e0b055cce1258705637a91.png%253Fixlib%253Drb-4.0.0%2526w%253D1200%2526blend64%253DaHR0cHM6Ly9xaWl0YS11c2VyLXByb2ZpbGUtaW1hZ2VzLmltZ2l4Lm5ldC9odHRwcyUzQSUyRiUyRnFpaXRhLWltYWdlLXN0b3JlLnMzLmFtYXpvbmF3cy5jb20lMkYwJTJGNzc1MTMlMkZwcm9maWxlLWltYWdlcyUyRjE0NzM3MDA4NTE_aXhsaWI9cmItNC4wLjAmYXI9MSUzQTEmZml0PWNyb3AmbWFzaz1lbGxpcHNlJmZtPXBuZzMyJnM9NzY4ZGYxNjA5OTAwN2UwZWNkODQwYjcxZTRmODM1MGU%2526blend-x%253D120%2526blend-y%253D467%2526blend-w%253D82%2526blend-h%253D82%2526blend-mode%253Dnormal%2526s%253D161b8320e972eb6cc9e9737dedab32da%3Fixlib%3Drb-4.0.0%26w%3D1200%26fm%3Djpg%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk2MCZoPTMyNCZ0eHQ9JUU3JUJGJUJCJUU4JUE4JUIzJTNBJTIwV2ViQVBJJTIwJUU4JUE4JUFEJUU4JUE4JTg4JUUzJTgxJUFFJUUzJTgzJTk5JUUzJTgyJUI5JUUzJTgzJTg4JUUzJTgzJTk3JUUzJTgzJUE5JUUzJTgyJUFGJUUzJTgzJTg2JUUzJTgyJUEzJUUzJTgyJUI5JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnR4dC1jb2xvcj0lMjMxRTIxMjEmdHh0LWZvbnQ9SGlyYWdpbm8lMjBTYW5zJTIwVzYmdHh0LXNpemU9NTYmdHh0LXBhZD0wJnM9ZDJhM2I3MDQ1NjhjZmM1ZGU4OTU4ZGI0NTMzNWEwZTY%26mark-x%3D120%26mark-y%3D112%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTgzOCZoPTU4JnR4dD0lNDBtc2VyaXphd2EmdHh0LWNvbG9yPSUyMzFFMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtcGFkPTAmcz02NDJjOTJlMjI3N2ZhZTdmMDUwZDMwYmM2M2Q0NjFiMA%26blend-x%3D242%26blend-y%3D454%26blend-w%3D838%26blend-h%3D46%26blend-fit%3Dcrop%26blend-crop%3Dleft%252Cbottom%26blend-mode%3Dnormal%26txt64%3DaW4g5qCq5byP5Lya56S-U21hcnRIUg%26txt-x%3D242%26txt-y%3D539%26txt-width%3D838%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%25231E2121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D28%26s%3D6b9038f0329329a5da7dbe33e9b9790b" alt="翻訳: WebAPI 設計のベストプラクティス - Qiita"> </a> </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-283067634"> <div class="centerarticle-reaction-comment js-user-bookmark-comment " data-url="http://qiita.com/mserizawa/items/b833e407d89abd21ee72" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20180528#bookmark-283067634" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2018/05/28</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/API/" data-gtm-click-label="user-reaction-tag">API</a></li> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/283067634/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://soudai.hatenablog.com/entry/2018/05/01/204442"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://soudai.hatenablog.com/entry/2018/05/01/204442" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img class="centerarticle-entry-favicon" src="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fsoudai.hatenablog.com%2Fentry%2F2018%2F05%2F01%2F204442" alt="">ユーザ情報を保存する時のテーブル設計 - そーだいなるらくがき帳</a> </h3> <ul class="centerarticle-entry-data"> <li> <span class="centerarticle-users"> <a href="/entry/s/soudai.hatenablog.com/entry/2018/05/01/204442" class="js-keyboard-entry-page-openable" title="ユーザ情報を保存する時のテーブル設計 - そーだいなるらくがき帳 (1097ブックマーク)" data-gtm-click-label="user-bookmark-users">1097 users</a> </span> </li> <li> <a href="/syo-sa19820615/?url=https%3A%2F%2Fsoudai.hatenablog.com%2F" title="『soudai.hatenablog.com』の新着エントリー" data-gtm-click-label="user-bookmark-domain"> soudai.hatenablog.com </a> </li> <li><a href="/hotentry/it" data-gtm-click-label="user-bookmark-category">テクノロジー</a></li> </ul> <div class="centerarticle-entry-contents"> <p class="centerarticle-entry-summary">はじめに ※この発言は個人の見解であり、所属する組織の公式見解ではありません用法用量を守り、個人の責任で業務に投入してください参考資料 2024/02/14追記実際のテーブル設計の詳細はこちらを参考にどうぞ。 agilejourney.uzabase.com 要件 User情報を保存するときにどのようなテーブル設計を行うか今北産業で頼むテーブルに状態を持たせず状態毎のテーブルを作る状態が変わればレコードを消して別のta<a data-gtm-click-label="entry-summary-keyword" href="/q/BL">bl</a>eに作る ta<a data-gtm-click-label="entry-summary-keyword" href="/q/BL">bl</a>eの普遍的な情報は別に持たせる僕の考えた最強の<a data-gtm-click-label="entry-summary-keyword" href="/q/DB">DB</a>設計 Po<a data-gtm-click-label="entry-summary-keyword" href="/q/stg">stg</a>re<a data-gtm-click-label="entry-summary-keyword" href="/q/SQL">SQL</a>をベースの雑なER図を作った。これを元に話を進める。 ta<a data-gtm-click-label="entry-summary-keyword" href="/q/BL">bl</a>e構成 users 親ta<a data-gtm-click-label="entry-summary-keyword" href="/q/BL">bl</a>eであり、すべてのユーザはここに属する。基<a data-gtm-click-label="entry-summary-keyword" href="/q/%E6%9C%AC">本</a>はINSERTのみでUPDATE、DELETEを考慮しない。 user_det<a data-gtm-click-label="entry-summary-keyword" href="/q/ai">ai</a>l userに付随する詳細の情報がここに登録</p> <a href="https://soudai.hatenablog.com/entry/2018/05/01/204442" class="centerarticle-entry-image" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-thumb"> <img src="https://cdn-ak-scissors.b.st-hatena.com/image/square/dfd7a7d874664677b23a4bd0f7b7fe5c6feed432/height=288;version=1;width=512/https%3A%2F%2Fcdn.image.st-hatena.com%2Fimage%2Fscale%2F668ee9d81ffaad6c4a70f57c165736f4ed041540%2Fbackend%3Dimagemagick%3Bheight%3D1300%3Bversion%3D1%3Bwidth%3D1300%2Fhttps%253A%252F%252Fcdn-ak.f.st-hatena.com%252Fimages%252Ffotolife%252FS%252FSoudai%252F20180501%252F20180501192200.png" alt="ユーザ情報を保存する時のテーブル設計 - そーだいなるらくがき帳"> </a> </div> </div> <div class="centerarticle-reaction js-user-bookmark-id-container" id="bookmark-363358898"> <div class="centerarticle-reaction-comment js-user-bookmark-comment " data-url="https://soudai.hatenablog.com/entry/2018/05/01/204442" data-user-name="syo-sa19820615"> <a href="/syo-sa19820615/" data-gtm-click-label="user-reaction-usericon" class="centerarticle-reaction-thumb"> <img src="https://cdn.profile-image.st-hatena.com/users/syo-sa19820615/profile.png" alt="syo-sa19820615" title="syo-sa19820615" class="centerarticle-reaction-image"> </a> <div class="centerarticle-reaction-main"> <span class="centerarticle-reaction-username"><a href="https://b.hatena.ne.jp/syo-sa19820615/20180504#bookmark-363358898" class="js-anchor-path" data-gtm-click-label="user-reaction-username">syo-sa19820615</a></span> <span class="centerarticle-reaction-timestamp">2018/05/04</span> <span class="js-private-icon status is-hidden"><img src="/images/v4/public/userpage/icon-private.svg" alt="非公開" width="10px" height="10px"></span> <div class="centerarticle-reaction-main-comment-tags"> <span class="js-comment"></span> <ul class="centerarticle-reaction-tags js-tag-text"> <li><a href="/syo-sa19820615/db/" data-gtm-click-label="user-reaction-tag">db</a></li> <li><a href="/syo-sa19820615/%E8%A8%AD%E8%A8%88/" data-gtm-click-label="user-reaction-tag">設計</a></li> </ul> </div> <div class="centerarticle-reaction-foot"> <div class="centerarticle-reaction-meta"> <span class="comment-permalink js-comment-permalink"> <a href="/entry/363358898/comment/syo-sa19820615" data-gtm-click-label="user-reaction-permalink" rel="nofollow">リンク</a> </span> <span class="list-star-container js-list-star-container"></span> <span class="twitter-click js-short-url-clicks"></span> </div> <ul class="centerarticle-reaction-menu"> <li class="js-add-star-container add-star-container"></li> </ul> </div> </div> </div> </div> <ul class="centerarticle-reaction-following js-user-following-bookmarks-icon"> </ul> <div class="js-user-following-bookmarks-detail is-hidden"> </div> </li> <li class="bookmark-item js-user-bookmark-item js-intent-share-bookmark" data-target-url="https://qiita.com/tmknom/items/08b69594e32a92bccee5"> <div class="centerarticle-entry is-image-entry-unit"> <h3 class="centerarticle-entry-title"> <a href="https://qiita.com/tmknom/items/08b69594e32a92bccee5" class="js-clickable-link js-keyboard-openable" target="_blank" rel="noopener" data-gtm-click-label="user-bookmark-title"><img 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