{"id":18507,"date":"2021-09-07T15:38:52","date_gmt":"2021-09-07T10:08:52","guid":{"rendered":"http:\/\/www.fusioncharts.com\/blog\/?p=18507"},"modified":"2026-01-20T14:37:15","modified_gmt":"2026-01-20T09:07:15","slug":"everything-you-need-to-know-about-graphql","status":"publish","type":"post","link":"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/","title":{"rendered":"Everything You Need to Know About GraphQL: 2026 Guide"},"content":{"rendered":"GraphQL has grown at an exponential rate since Facebook released it in 2015. Thousands of software development firms around the world use it on production-level apps today. The flexibility of GraphQL is its greatest asset. Developers can request data from multiple sources with a single API call.\r\n\r\nIn this post, we&#8217;ll go over GraphQL in greater depth, look at some real-world code examples that allow you to create <a href=\"https:\/\/www.fusioncharts.com\/react-charts\">Data charts<\/a> with React, and discuss why you should consider using GraphQL.\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_71 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#What_is_GraphQL\" title=\"What is GraphQL?\">What is GraphQL?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#Why_should_you_use_GraphQL\" title=\"Why should you use GraphQL?\">Why should you use GraphQL?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#What_are_the_Concepts_of_GraphQL\" title=\"What are the Concepts of GraphQL?\">What are the Concepts of GraphQL?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#Real-Life_Code_Example_of_GraphQL\" title=\"Real-Life Code Example of GraphQL\">Real-Life Code Example of GraphQL<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#getMessageById_%E2%80%93_Query\" title=\"getMessageById &#8211; Query\">getMessageById &#8211; Query<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#banUserMutation_%E2%80%93_Mutation\" title=\"banUserMutation \u2013 Mutation\">banUserMutation \u2013 Mutation<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/#Should_you_use_GraphQL\" title=\"Should you use GraphQL?\">Should you use GraphQL?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_GraphQL\"><\/span><strong>What is GraphQL?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\nGraphQL is an open-source data query and manipulation language for Application Programming Interfaces (APIs). Unlike a typical REST API, it allows you to pull data from multiple sources with a single API call.\u00a0 GraphQL is also fast, flexible, and efficient. That\u2019s why it has become massively popular among developers around the world and could be useful for an <a href=\"https:\/\/www.fusioncharts.com\/\">interactive graph<\/a>.\r\n<h3><span class=\"ez-toc-section\" id=\"Why_should_you_use_GraphQL\"><\/span><strong>Why should you use GraphQL?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n \t<li>Avoid multiple REST calls<\/li>\r\n \t<li>Enhance efficiency. Write fewer lines of code and<\/li>\r\n \t<li>Enjoy super-fast performance<\/li>\r\n \t<li>Solve over-fetching and under-fetching issues<\/li>\r\n \t<li>Facilitate rapid application prototyping<\/li>\r\n<\/ul>\r\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_Concepts_of_GraphQL\"><\/span><strong>What are the Concepts of GraphQL?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<ul>\r\n \t<li><strong>Schema:<\/strong> Schema describes the shape of your available data. GraphQL uses a schema to define a hierarchy of types with fields. It generates them from the data stores on the back-end of your web application. Also, schemas specify the exact queries and mutations available for clients to execute.<\/li>\r\n \t<li><strong>Type: <\/strong>There are two kinds of types in GraphQL: scalar types and object types. Scalar types are primitive data types, like integer, float, and string. They can store only a single value. On the other hand, the object type represents a group of fields. For instance, there can be an object type called User. It can have a field that references another object type, like Admin.<\/li>\r\n \t<li><strong>Queries: <\/strong><span data-preserver-spaces=\"true\">Queries are used to read or fetch values. They define what your API can return. They make the process of creating multiple data fetches straightforward for you. You need to pass arguments to every field and nested object in your query. This lets you effectively deepen your query requests.<\/span><\/li>\r\n \t<li><strong>Mutations:<\/strong> Mutations allow you to modify the server-side data. You can use them to perform various operations, like inserting, updating, and deleting data on the server.<\/li>\r\n \t<li><strong>Resolver: <\/strong><span data-preserver-spaces=\"true\">Resolver is a collection of functions that populate the data for a single field in your schema. When the client queries for a particular field, the resolver fetches the requested data from the appropriate source. In other words, a resolver acts as a GraphQL query handler.<\/span><\/li>\r\n<\/ul>\r\n<h2><span class=\"ez-toc-section\" id=\"Real-Life_Code_Example_of_GraphQL\"><\/span><strong>Real-Life Code Example of GraphQL <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\nTo understand how GraphQL works in real life, let\u2019s explore the open-source code of Spectrum\u2019s community-based chat platform. Its technology stack includes GraphQL, so it is a perfect example of a real-life application.\r\n<h3><span class=\"ez-toc-section\" id=\"getMessageById_%E2%80%93_Query\"><\/span><strong>getMessageById &#8211; Query<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\nTake a look at this portion of code from the Spectrum <strong>getMessage.js<\/strong> file:\r\n<pre class=\"lang:javascript\">export const getMessageByIdQuery = gql`\r\n\r\n\u00a0 query getMessageById($id: ID!) {\r\n\r\n\u00a0\u00a0\u00a0 message(id: $id) {\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0 ...messageInfo\r\n\r\n\u00a0\u00a0\u00a0 }\r\n\r\n\u00a0 }\r\n\r\n\u00a0 ${messageInfoFragment}<\/pre>\r\nIn the first line, you export a constant named <strong>getMessageByIdQuery<\/strong>. Then you assign it a GraphQL query by using <strong>gql<\/strong> template literal tag.\r\n\r\nNext, you create a query called <strong>getMessageById<\/strong>. Inside it, you have to create <strong>messageInfo<\/strong>. It is preceded by three dots, which are used to refer to fragments within the code. The query returns a <strong>message<\/strong> when it passes an <strong>id<\/strong> as input.\r\n<h3><span class=\"ez-toc-section\" id=\"banUserMutation_%E2%80%93_Mutation\"><\/span><strong>banUserMutation \u2013 Mutation<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\nTo clarify the concept of mutation, take a look at this portion of code from Spectrum&#8217;s <strong>banUser.js<\/strong> file.\r\n<pre class=\"lang:javascript\">type BanUserInput = {\r\n\r\n\u00a0 userId: string,\r\n\r\n\u00a0 reason: string,\r\n\r\n};\r\n\r\n\r\n\r\n\r\nexport const banUserMutation = gql`\r\n\r\n\u00a0 mutation banUser($input: BanUserInput!) {\r\n\r\n\u00a0\u00a0\u00a0 banUser(input: $input)\r\n\r\n\u00a0 }\r\n\r\n`;<\/pre>\r\nThe mutation bans a specific user. In the first line, you denote the input type, called <strong>BanUserInput<\/strong>. It has two fields: <strong>userID<\/strong> and <strong>reason<\/strong>.\r\n\r\nNext, you export a constant, called <strong>banUserMutation<\/strong>. You are also assigning it a GraphQL query using the <strong>gql<\/strong> template literal tag.\r\n\r\nThen you have the <strong>banUser <\/strong>mutation as the name. The keyword <strong>mutation <\/strong>precedes it. It has a <strong>banUser<\/strong> field with an input.\r\n\r\nAs you can see, you can implement functionality to ban a user with just a few lines of code. There is no complexity. With GraphQL, you can implement features quickly with less code.\r\n<h2><span class=\"ez-toc-section\" id=\"Should_you_use_GraphQL\"><\/span><strong>Should you use GraphQL?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\nIn terms of efficiency and performance, GraphQL may be the future of APIs. It helps you to do more with less code. Also, it allows you to create requests for multiple data sources with just a single call. If you aren&#8217;t already, you should consider using GraphQL.\r\n\r\n<a href=\"https:\/\/www.fusioncharts.com\/blog\/analytical-dashboard-react-graphql\/\" target=\"_blank\" rel=\"noopener noreferrer\">Find out how to use GraphQL with FusionCharts!<\/a>\r\n<pre class=\"lang:markup\"><\/pre>","protected":false},"excerpt":{"rendered":"<p>GraphQL has grown at an exponential rate since Facebook released it in 2015. Thousands of software development firms around the world use it on production-level apps today. The flexibility of GraphQL is its greatest asset. Developers can request data from multiple sources with a single API call. In this post, we&#8217;ll go over GraphQL in [&hellip;]<\/p>\n","protected":false},"author":58,"featured_media":18508,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[887,683,874,211,221,876,877,875],"coauthors":[762],"class_list":["post-18507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","tag-api","tag-charts","tag-graphql","tag-javascript","tag-json","tag-mutations","tag-query","tag-schema"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Everything You Need to Know About GraphQL: 2026 Guide<\/title>\n<meta name=\"description\" content=\"Discover why GraphQL has become massively popular. Learn how to use this fast, flexible, and efficient tool for your 2026 data-driven applications now.\" \/>\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.fusioncharts.com\/blog\/everything-you-need-to-know-about-graphql\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Everything You Need to Know About GraphQL: 2026 Guide\" \/>\n<meta property=\"og:description\" content=\"Discover why GraphQL has become massively popular. 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