{"id":47897,"date":"2022-11-22T08:10:06","date_gmt":"2023-02-21T22:59:45","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8graphql%e4%b8%ad%e8%80%83%e8%99%91n1%e7%9a%84%e9%97%ae%e9%a2%98\/"},"modified":"2024-01-15T12:27:06","modified_gmt":"2024-01-15T04:27:06","slug":"%e5%9c%a8graphql%e4%b8%ad%e8%80%83%e8%99%91n1%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8graphql%e4%b8%ad%e8%80%83%e8%99%91n1%e7%9a%84%e9%97%ae%e9%a2%98\/","title":{"rendered":"\u5728GraphQL\u4e2d\u8003\u8651N+1\u7684\u95ee\u9898"},"content":{"rendered":"<p>\u6211\u8ba4\u4e3a\u5728Rails\u4e2d\u4f7f\u7528GraphQL\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u7684\u5b9d\u77f3\uff1a<br \/>\nhttps:\/\/github.com\/rmosolgo\/graphql-ruby<\/p>\n<p>\u4f7f\u7528GraphQL\u65f6\u5bb9\u6613\u51fa\u73b0N+1\u95ee\u9898\u3002\u56e0\u6b64\u8003\u8651\u4e86\u4ee5\u4e0b\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">ShopsResolver<\/span>\r\n  <span class=\"k\">def<\/span> <span class=\"nc\">self<\/span><span class=\"o\">.<\/span><span class=\"nf\">call<\/span><span class=\"p\">(<\/span><span class=\"n\">obj<\/span><span class=\"p\">,<\/span> <span class=\"n\">args<\/span><span class=\"p\">,<\/span> <span class=\"n\">ctx<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">limit<\/span>    <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"p\">[<\/span><span class=\"ss\">:limit<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">order<\/span>    <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"p\">[<\/span><span class=\"ss\">:order<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">bookable<\/span> <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"p\">[<\/span><span class=\"ss\">:bookable<\/span><span class=\"p\">]<\/span>\r\n\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"no\">Shop<\/span><span class=\"p\">.<\/span><span class=\"nf\">visible<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">limit<\/span><span class=\"p\">(<\/span><span class=\"n\">limit<\/span><span class=\"p\">)<\/span>              <span class=\"k\">if<\/span> <span class=\"n\">limit<\/span><span class=\"p\">.<\/span><span class=\"nf\">present?<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">order<\/span><span class=\"p\">(<\/span><span class=\"s1\">'RAND()'<\/span><span class=\"p\">)<\/span>           <span class=\"k\">if<\/span> <span class=\"n\">order<\/span> <span class=\"o\">==<\/span> <span class=\"s2\">\"TRENDING\"<\/span> <span class=\"c1\"># \u4eee\u5b9f\u88c5<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">order<\/span><span class=\"p\">(<\/span><span class=\"s1\">'RAND()'<\/span><span class=\"p\">)<\/span>           <span class=\"k\">if<\/span> <span class=\"n\">order<\/span> <span class=\"o\">==<\/span> <span class=\"s2\">\"RANKING\"<\/span>  <span class=\"c1\"># \u4eee\u5b9f\u88c5<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">where<\/span><span class=\"p\">(<\/span><span class=\"ss\">bookable: <\/span><span class=\"n\">bookable<\/span><span class=\"p\">)<\/span> <span class=\"k\">if<\/span> <span class=\"n\">bookable<\/span><span class=\"p\">.<\/span><span class=\"nf\">present?<\/span>\r\n\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:area<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:categories<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:shop_categories<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:category_subs<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:shop_category_subs<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">shops<\/span> <span class=\"o\">=<\/span> <span class=\"n\">shops<\/span><span class=\"p\">.<\/span><span class=\"nf\">includes<\/span><span class=\"p\">(<\/span><span class=\"ss\">:situations<\/span><span class=\"p\">)<\/span>\r\n\r\n    <span class=\"n\">shops<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u8fc7\u5ea6\u4f7f\u7528includes\uff0c\u4f1a\u5bfc\u81f4\u4ea7\u751f\u4e0d\u5fc5\u8981\u7684SQL\u67e5\u8be2\uff0c\u8fd9\u662f\u4e0d\u597d\u7684\u3002\u56e0\u6b64\uff0c\u6211\u8fdb\u884c\u4e86\u9632\u8303\u63aa\u65bd\u7684\u641c\u7d22\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Q: Prevent N+1 queries \u00b7 Issue #189 \u00b7 rmosolgo\/graphql-ruby<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Pre-loading\/Eager loading nested associations \u00b7 Issue #58 \u00b7 rmosolgo\/graphql-ruby<\/ul>\n<p>\u66ab\u6642\u522a\u9664\u6240\u6709\u7684includes\uff0c\u6539\u70ba\u4f7f\u7528https:\/\/github.com\/salsify\/goldiloader\u4f86\u9032\u884c\u8655\u7406\u3002<br \/>\n\u8a66\u8457\u4f7f\u7528goldiloader\u5f8c\uff0cGraphQL\u904b\u4f5c\u826f\u597d\uff0c\u4f46\u4e5f\u51fa\u73fe\u4e86\u4e00\u4e9b\u7cfb\u7d71\u7121\u6cd5\u904b\u4f5c\u7684\u554f\u984c\u3002<\/p>\n<p>\u8003\u8651\u5230\u5f71\u54cd\u8303\u56f4\u5f88\u5e7f\uff0c\u6211\u51b3\u5b9a\u5c1d\u8bd5\u4f7f\u7528 https:\/\/github.com\/Shopify\/graphql-batch\uff08\u7ee7\u7eed\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u8ba4\u4e3a\u5728Rails\u4e2d\u4f7f\u7528GraphQL\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u7684\u5b9d\u77f3\uff1a https:\/\/github.com\/rmosol [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47897","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728GraphQL\u4e2d\u8003\u8651N+1\u7684\u95ee\u9898 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5728graphql\u4e2d\u8003\u8651n1\u7684\u95ee\u9898\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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