{"height":"190","type":"rich","url":"https://blog.ingage.jp/entry/2021/08/20/115921","author_name":"ryohei515","title":"N+1\u554f\u984c\u306b\u3064\u3044\u3066\u52c9\u5f37\u4f1a\u3067\u767a\u8868\u3057\u3066\u307f\u305f","blog_title":"\u30a4\u30f3\u30b2\u30fc\u30b8\u958b\u767a\u8005\u30d6\u30ed\u30b0","categories":["\u30d0\u30c3\u30af\u30a8\u30f3\u30c9"],"provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.ingage.jp%2Fentry%2F2021%2F08%2F20%2F115921\" title=\"N+1\u554f\u984c\u306b\u3064\u3044\u3066\u52c9\u5f37\u4f1a\u3067\u767a\u8868\u3057\u3066\u307f\u305f - \u30a4\u30f3\u30b2\u30fc\u30b8\u958b\u767a\u8005\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2021-08-20 11:59:21","provider_url":"https://hatena.blog","description":"ryohei515\u3067\u3059\u3002 Ruby on Rails\u3092\u4f7f\u3046\u4e0a\u3067\u3001N+1\u554f\u984c\u306f\u907f\u3051\u3066\u306f\u901a\u308c\u306a\u3044\u554f\u984c\u3067\u3059\u3002 \u30a4\u30f3\u30b2\u30fc\u30b8\u3067\u306f\u9031\u306b1\u5ea6\u3001\u793e\u5185\u52c9\u5f37\u4f1a\u3092\u884c\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u4eca\u9031\u306f\u79c1\u304c\u767a\u8868\u62c5\u5f53\u3060\u3063\u305f\u305f\u3081\u3001\u3053\u306eN+1\u554f\u984c\u3092\u77e5\u8b58\u6574\u7406\u304c\u3066\u3089\u3001\u793e\u5185\u52c9\u5f37\u4f1a\u3067\u5171\u6709\u3057\u307e\u3057\u305f\u3002 \u7c21\u5358\u306a\u5185\u5bb9\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u8cc7\u6599\u3092\u30d6\u30ed\u30b0\u3067\u5171\u6709\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 TL;DR N+1\u554f\u984c\u306b\u5bfe\u3057\u3066\u306f\u3001\u3053\u308c\u304c\u7d50\u8ad6\u3067\u3059\u3002 \u30e1\u30bd\u30c3\u30c9 \u7d50\u5408\u65b9\u6cd5 \u4f7f\u7528\u7b87\u6240 joins \u5185\u90e8 \u5185\u90e8\u7d50\u5408\u3067\u7d50\u5408\u5148\u306e\u6761\u4ef6\u3092\u30d5\u30a3\u30eb\u30bf\u3057\u305f\u3044\u3068\u304d left_joins \u5916\u90e8 \u5916\u90e8\u7d50\u5408\u3067\u7d50\u5408\u5148\u306e\u6761\u4ef6\u3092\u30d5\u30a3\u30eb\u30bf\u3057\u305f\u3044\u3068\u304d preload \u5916\u90e8 \u7d50\u5408\u5148\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u3044\u305f\u3044\u3068\u304d eager_l\u2026","version":"1.0","author_url":"https://blog.hatena.ne.jp/ryohei515/","width":"100%","blog_url":"https://blog.ingage.jp/","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/r/ryohei515/20210819/20210819203336.jpg"}