{"id":4586,"date":"2026-02-12T21:31:36","date_gmt":"2026-02-12T16:01:36","guid":{"rendered":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/"},"modified":"2026-02-12T21:31:36","modified_gmt":"2026-02-12T16:01:36","slug":"10-react-best-practices-for-high-performance-apps","status":"publish","type":"post","link":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/","title":{"rendered":"10 React Best Practices for High-Performance Apps"},"content":{"rendered":"<p>I looked at the <code>node_modules<\/code> folder today. It\u2019s 400MB. For a landing page. We\u2019re done playing games.<\/p>\n<p>Back in my day, we managed memory. We cared about the heap. We knew where every byte lived and, more importantly, when it died. Now? I walk into this &#8220;modern&#8221; repository and it\u2019s like walking into a landfill. I\u2019m running Node 22.x, thinking maybe the V8 improvements will save us, but no. You can\u2019t optimize a dumpster fire.<\/p>\n<p>Here is the state of the &#8220;project&#8221; as of this morning. I ran a fresh install and a build. My workstation, which has 64GB of RAM and handles LLVM compilations without breaking a sweat, actually groaned.<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\">$ npm audit\n                           blocklist.js:24\n                           throw new Error('Dependency Hell Detected');\n                           ^\n\nError: Dependency Hell Detected\n    at Object.&lt;anonymous&gt; (root\/node_modules\/bloatware\/index.js:1:1)\n\nfound 482 vulnerabilities (112 low, 154 moderate, 180 high, 36 critical)\nrun `npm audit fix` to fix them, or `npm audit` for details\n\n$ ls -lh node_modules | wc -l\n   34212\n$ du -sh node_modules\n412M    node_modules\n$ vite build\nvite v5.4.10 building for production...\n\u2713 1422 modules transformed.\ndist\/index.html                  0.45 kB\ndist\/assets\/index-D8x2n9zL.css   42.10 kB\ndist\/assets\/index-Cj9W1_mI.js    1,240.22 kB \u2502 gzip: 380.14 kB\n\n(!) Some chunks are larger than 500 kB after minification. \nConsider using dynamic import() to break them down.\nBuild finished in 14.2s.\n<\/code><\/pre>\n<p>One point two megabytes of JavaScript. To show a list of users and a search bar. I\u2019ve seen operating systems smaller than this bundle. This is what happens when you let people who think &#8220;pointers&#8221; are a type of dog write software.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69e1f2ecb5d77\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e1f2ecb5d77\"  aria-label=\"Toggle\" \/><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:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#LOGISTICAL_COLLAPSE_THE_DEPENDENCY_INFESTATION\" >LOGISTICAL COLLAPSE: THE DEPENDENCY INFESTATION<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#ANATOMY_OF_A_CRIME_THE_500-LINE_GOD_COMPONENT\" >ANATOMY OF A CRIME: THE 500-LINE GOD COMPONENT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#THE_RE-RENDER_CASCADE_A_DEATH_BY_A_THOUSAND_HOOKS\" >THE RE-RENDER CASCADE: A DEATH BY A THOUSAND HOOKS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#STATE_MANAGEMENT_AS_A_PYRAMID_SCHEME\" >STATE MANAGEMENT AS A PYRAMID SCHEME<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#THE_MEMOIZATION_FALLACY_SHAVING_THE_YAK_IN_VIRTUAL_SPACE\" >THE MEMOIZATION FALLACY: SHAVING THE YAK IN VIRTUAL SPACE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#SURGICAL_INTERVENTION_REFACTORING_FOR_THE_BARE_METAL\" >SURGICAL INTERVENTION: REFACTORING FOR THE BARE METAL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#THE_COST_OF_ABSTRACTION_A_FINAL_POST-MORTEM\" >THE COST OF ABSTRACTION: A FINAL POST-MORTEM<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#Related_Articles\" >Related Articles<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"LOGISTICAL_COLLAPSE_THE_DEPENDENCY_INFESTATION\"><\/span>LOGISTICAL COLLAPSE: THE DEPENDENCY INFESTATION<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I opened the <code>package.json<\/code>. It\u2019s a horror story. We\u2019re on React 18.3.2, which is fine, I guess, if you enjoy a library that thinks it\u2019s a framework. But then I see it: <code>lodash<\/code>, <code>moment<\/code>, <code>axios<\/code>, <code>styled-components<\/code>, <code>framer-motion<\/code>, <code>react-query<\/code>, <code>redux-toolkit<\/code>, and something called <code>left-pad-ultimate<\/code>. <\/p>\n<p>Why do we have <code>axios<\/code>? Node 22 has a native <code>fetch<\/code>. Why is <code>moment<\/code> here? It\u2019s 2024. The <code>Intl<\/code> object exists. We are pulling in 200KB of date-parsing logic to display &#8220;2 days ago.&#8221; I could write a C++ template to calculate relative time in four lines of assembly-adjacent code that would execute in three clock cycles. Instead, we\u2019re shipping a library that includes support for the Julian calendar.<\/p>\n<p>The <code>node_modules<\/code> folder is 34,000 files. Every time you run <code>npm install<\/code>, you are performing a distributed denial of service attack on your own hard drive. The sheer amount of cruft is staggering. I ran a <code>grep<\/code> to see how many times we\u2019re importing <code>React<\/code>:<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\">$ grep -r &quot;import React&quot; src | wc -l\n214\n<\/code><\/pre>\n<p>In React 18.3.2, you don&#8217;t even need to import React for JSX. But here we are, wasting bytes on every single file because nobody bothers to read the changelog. They just copy-paste the same boilerplate until the project becomes a sentient mass of spaghetti.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"ANATOMY_OF_A_CRIME_THE_500-LINE_GOD_COMPONENT\"><\/span>ANATOMY OF A CRIME: THE 500-LINE GOD COMPONENT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I found it. <code>src\/components\/UserDashboard.tsx<\/code>. Five hundred and twelve lines of pure, unadulterated chaos. It\u2019s a &#8220;God Component.&#8221; It fetches data, it filters data, it handles three different modals, it manages its own complex state, and it even has inline SVG icons that are 50 lines long each.<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">\/\/ A snippet of the nightmare\nexport const UserDashboard = () =&gt; {\n  const [users, setUsers] = useState([]);\n  const [filteredUsers, setFilteredUsers] = useState([]);\n  const [searchTerm, setSearchTerm] = useState(&quot;&quot;);\n  const [isLoading, setIsLoading] = useState(false);\n  const [error, setError] = useState(null);\n  const [isModalOpen, setIsModalOpen] = useState(false);\n  const [selectedUser, setSelectedUser] = useState(null);\n  \/\/ ... 15 more useStates\n<\/code><\/pre>\n<p>Look at this. <code>users<\/code> and <code>filteredUsers<\/code>. We are duplicating the entire data set in the heap. If the API returns 1,000 users, we have 2,000 objects floating around in memory. This is a basic violation of the &#8220;Single Source of Truth&#8221; principle, but more importantly, it\u2019s a waste of the user&#8217;s L3 cache. <\/p>\n<p>In a real language, you\u2019d have a pointer to the original data and a view or an iterator for the filtered results. In JavaScript, we just copy everything and hope the garbage collector isn&#8217;t busy.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"THE_RE-RENDER_CASCADE_A_DEATH_BY_A_THOUSAND_HOOKS\"><\/span>THE RE-RENDER CASCADE: A DEATH BY A THOUSAND HOOKS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Then we get to the <code>useEffect<\/code> blocks. This is where the real &#8220;re-render hell&#8221; begins.<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">useEffect(() =&gt; {\n  setIsLoading(true);\n  fetchUsers().then(data =&gt; {\n    setUsers(data);\n    setIsLoading(false);\n  });\n}, []);\n\nuseEffect(() =&gt; {\n  const results = users.filter(user =&gt; \n    user.name.toLowerCase().includes(searchTerm.toLowerCase())\n  );\n  setFilteredUsers(results);\n}, [searchTerm, users]);\n<\/code><\/pre>\n<p>Do you see it? Every time <code>searchTerm<\/code> changes\u2014which is every single keystroke\u2014the second <code>useEffect<\/code> fires. It triggers <code>setFilteredUsers<\/code>. That triggers a re-render of the entire 500-line component. Because the component is so massive, React has to reconstruct the entire Virtual DOM tree for the dashboard, the sidebar, the header, and the footer, just to figure out that only one text node changed.<\/p>\n<p>This is &#8220;shaving the yak&#8221; at a professional level. We are performing O(N) string operations on every keystroke and then forcing the browser to do a full layout pass. On a mobile device, this makes the UI feel like it\u2019s stuck in molasses. The fans on my MacBook Pro started spinning just looking at this code.<\/p>\n<p>If we are going to adhere to what the industry calls <strong>react best<\/strong> practices, we need to stop treating the browser like it has infinite registers and start respecting the call stack. The filtering should be a <code>useMemo<\/code> calculation, not a state-driven effect.<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">const filteredUsers = useMemo(() =&gt; {\n  return users.filter(user =&gt; \n    user.name.toLowerCase().includes(searchTerm.toLowerCase())\n  );\n}, [searchTerm, users]);\n<\/code><\/pre>\n<p>But even <code>useMemo<\/code> has overhead. You\u2019re allocating a dependency array, storing it, and performing a shallow comparison on every render. In C++, I\u2019d just use a <code>std::string_view<\/code> and a predicate. Here, I have to beg the library not to destroy the frame rate.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"STATE_MANAGEMENT_AS_A_PYRAMID_SCHEME\"><\/span>STATE MANAGEMENT AS A PYRAMID SCHEME<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I looked further down. The component is wrapped in three different Context Providers. One for themes, one for auth, and one for &#8220;Global UI State.&#8221; <\/p>\n<p>Every time the &#8220;Global UI State&#8221; changes\u2014say, when a notification pops up\u2014the <code>UserDashboard<\/code> re-renders. Why? Because <code>useContext<\/code> is a blunt instrument. It doesn&#8217;t care if the component only needs the <code>isSidebarOpen<\/code> boolean; if anything in the context object changes, the whole world burns.<\/p>\n<p>We\u2019ve replaced the simplicity of passing a pointer with a complex subscription model that nobody understands. People use Redux or Zustand because they\u2019re afraid of props, but then they end up with a dependency graph that looks like a bowl of wet noodles. <\/p>\n<p>I saw a <code>dispatch<\/code> call inside a <code>useEffect<\/code> that was triggered by a prop change. That dispatch updated the store, which updated the prop, which triggered the <code>useEffect<\/code> again. It was a circular dependency that only stopped because of a <code>Math.random()<\/code> check. I\u2019m not joking. Someone actually wrote <code>if (Math.random() &gt; 0.5)<\/code> to &#8220;throttle&#8221; an infinite loop. I need a drink.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"THE_MEMOIZATION_FALLACY_SHAVING_THE_YAK_IN_VIRTUAL_SPACE\"><\/span>THE MEMOIZATION FALLACY: SHAVING THE YAK IN VIRTUAL SPACE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8220;Just use <code>useCallback<\/code>,&#8221; they said. &#8220;It\u2019ll be faster,&#8221; they said.<\/p>\n<p>I found this gem in the middle of the God Component:<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">const handleUserClick = useCallback((id) =&gt; {\n  console.log(&quot;User clicked:&quot;, id);\n  setSelectedUser(users.find(u =&gt; u.id === id));\n  setIsModalOpen(true);\n}, [users]);\n<\/code><\/pre>\n<p>This is a classic example of memoization cargo culting. The developer thinks they are saving performance by wrapping this function in <code>useCallback<\/code>. But look at the dependency array: <code>[users]<\/code>. Every time the user list is fetched or filtered (which we already established happens constantly), the <code>users<\/code> array reference changes. This means the <code>useCallback<\/code> is invalidated and the function is recreated anyway.<\/p>\n<p>You are paying the price of the memoization\u2014the memory for the closure and the overhead of the dependency check\u2014and getting absolutely zero benefit. It\u2019s like buying a gym membership and only using it to buy pizza at the snack bar.<\/p>\n<p>And don&#8217;t get me started on <code>React.memo<\/code>. They wrapped the <code>UserItem<\/code> component in <code>memo<\/code>, but they pass it an inline object for styles:<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">&lt;UserItem \n  user={user} \n  style={{ color: 'red' }} \n  onClick={() =&gt; handleUserClick(user.id)} \n\/&gt;\n<\/code><\/pre>\n<p>In JavaScript, <code>{} !== {}<\/code>. Every time the parent renders, a new style object is created. Every time the parent renders, a new anonymous function is created for <code>onClick<\/code>. The <code>React.memo<\/code> check fails every single time. We are performing a shallow comparison of props that we <em>know<\/em> will be different, just to satisfy some linter rule written by someone who doesn&#8217;t understand how memory allocation works in V8.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SURGICAL_INTERVENTION_REFACTORING_FOR_THE_BARE_METAL\"><\/span>SURGICAL INTERVENTION: REFACTORING FOR THE BARE METAL<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I couldn&#8217;t take it anymore. I started the refactor. I\u2019m not using Vite 5.4\u2019s fancy features; I\u2019m using common sense.<\/p>\n<p>First, I broke the God Component into pieces. Not because I like &#8220;clean code&#8221;\u2014I hate that term\u2014but because I want to limit the scope of the re-renders. If the search bar is its own component with its own local state, typing in it won&#8217;t force the entire user list to re-reconcile.<\/p>\n<p>Second, I killed the <code>filteredUsers<\/code> state. It\u2019s a derived value. It belongs in the render logic, or at most, a <code>useMemo<\/code> if the filtering logic is computationally expensive (which it isn&#8217;t, it\u2019s just string matching).<\/p>\n<p>Third, I replaced the inline SVGs with a single sprite sheet. Why were we shipping 50KB of XML inside our JavaScript bundle? It\u2019s a waste of the parser\u2019s time.<\/p>\n<pre class=\"codehilite\"><code class=\"language-typescript\">\/\/ Refactored SearchInput.tsx\nconst SearchInput = ({ onSearch }: { onSearch: (val: string) =&gt; void }) =&gt; {\n  const [value, setValue] = useState(&quot;&quot;);\n\n  const handleChange = (e: React.ChangeEvent&lt;HTMLInputElement&gt;) =&gt; {\n    const val = e.target.value;\n    setValue(val);\n    \/\/ Debounce this so we don't kill the CPU\n    debounce(() =&gt; onSearch(val), 150);\n  };\n\n  return &lt;input value={value} onChange={handleChange} \/&gt;;\n};\n<\/code><\/pre>\n<p>I implemented a simple debounce. We don&#8217;t need to filter the list 60 times a second while the user is typing &#8220;Smith.&#8221; We can wait 150ms. That\u2019s 150ms where the CPU can actually sleep, or at least do something useful like background garbage collection.<\/p>\n<p>I also looked at the <code>UserList<\/code> component. Instead of rendering 1,000 DOM nodes, I implemented a basic virtualization window. Why render what the user can&#8217;t see? In C++, if I had a buffer of 1,000,000 elements, I wouldn&#8217;t try to draw them all to the screen at once. I\u2019d calculate the offset and only draw the visible range. Why is this concept so foreign to web developers?<\/p>\n<h2><span class=\"ez-toc-section\" id=\"THE_COST_OF_ABSTRACTION_A_FINAL_POST-MORTEM\"><\/span>THE COST OF ABSTRACTION: A FINAL POST-MORTEM<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>We\u2019ve reached a point where the &#8220;developer experience&#8221; has completely cannibalized the &#8220;user experience.&#8221; We use these massive frameworks and libraries because they make it &#8220;easier&#8221; to build things, but we\u2019ve forgotten what we\u2019re actually building. <\/p>\n<p>We are building instructions for a processor. That processor doesn&#8217;t care about your &#8220;hooks&#8221; or your &#8220;functional purity.&#8221; It cares about instructions per clock. It cares about cache hits. It cares about memory bandwidth.<\/p>\n<p>Every time you add a dependency because you\u2019re too lazy to write a 10-line utility function, you are adding latency. Every time you ignore a re-render because &#8220;computers are fast now,&#8221; you are draining someone&#8217;s battery.<\/p>\n<p>I finished the refactor. The bundle size dropped from 1.2MB to 180KB. The build time went from 14 seconds to 2 seconds. The <code>node_modules<\/code> folder is still a disaster, but at least the code we\u2019re shipping isn&#8217;t a personal insult to the silicon it runs on.<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\">$ vite build\n\u2713 84 modules transformed.\ndist\/assets\/index-A1b2C3d4.js    182.10 kB \u2502 gzip: 45.20 kB\nBuild finished in 2.1s.\n<\/code><\/pre>\n<p>It\u2019s better, but it\u2019s still JavaScript. It\u2019s still running in a sandbox, managed by a runtime that thinks it knows better than I do about when to free memory. But for now, the fans have stopped spinning. I\u2019m going to go look at some assembly code just to remind myself that the world can be sane. <\/p>\n<p>If you\u2019re going to work in this codebase, remember: the CPU is not your friend. It is a resource you are exploiting. Try to be a little less greedy. Stop the re-render hell. Kill the cruft. And for the love of all that is holy, stop using <code>useEffect<\/code> for things that can be done in a simple function call. <\/p>\n<p>We\u2019re done here. Don&#8217;t call me for the next &#8220;sprint.&#8221; I\u2019ll be in the server room, listening to the hum of hardware that actually does what it\u2019s told.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Related_Articles\"><\/span>Related Articles<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Explore more insights and best practices:<\/p>\n<ul>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/10-kubernetes-best-practices-for-production-success\/\">10 Kubernetes Best Practices For Production Success<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/fixed-freepbx-dashboard-very-slow-to-load\/\">Fixed Freepbx Dashboard Very Slow To Load<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/how-to-upgrade-to-python-3-12-on-ubuntu-20-04-and-22-04-lts\/\">How To Upgrade To Python 3 12 On Ubuntu 20 04 And 22 04 Lts<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>I looked at the node_modules folder today. It\u2019s 400MB. For a landing page. We\u2019re done playing games. Back in my day, we managed memory. We cared about the heap. We knew where every byte lived and, more importantly, when it died. Now? I walk into this &#8220;modern&#8221; repository and it\u2019s like walking into a landfill. &#8230; <a title=\"10 React Best Practices for High-Performance Apps\" class=\"read-more\" href=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\" aria-label=\"Read more  on 10 React Best Practices for High-Performance Apps\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4586","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>10 React Best Practices for High-Performance Apps - ITSupportWale<\/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:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"10 React Best Practices for High-Performance Apps - ITSupportWale\" \/>\n<meta property=\"og:description\" content=\"I looked at the node_modules folder today. It\u2019s 400MB. For a landing page. We\u2019re done playing games. Back in my day, we managed memory. We cared about the heap. We knew where every byte lived and, more importantly, when it died. Now? I walk into this &#8220;modern&#8221; repository and it\u2019s like walking into a landfill. ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\" \/>\n<meta property=\"og:site_name\" content=\"ITSupportWale\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Itsupportwale-298547177495978\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-12T16:01:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2021\/05\/android-chrome-512x512-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"512\" \/>\n\t<meta property=\"og:image:height\" content=\"512\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Techie\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Techie\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\"},\"author\":{\"name\":\"Techie\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/#\/schema\/person\/8c5a2b3d36396e0a8fd91ec8242fd46d\"},\"headline\":\"10 React Best Practices for High-Performance Apps\",\"datePublished\":\"2026-02-12T16:01:36+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\"},\"wordCount\":1718,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\",\"url\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\",\"name\":\"10 React Best Practices for High-Performance Apps - ITSupportWale\",\"isPartOf\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/#website\"},\"datePublished\":\"2026-02-12T16:01:36+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/itsupportwale.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"10 React Best Practices for High-Performance Apps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/#website\",\"url\":\"https:\/\/itsupportwale.com\/blog\/\",\"name\":\"ITSupportWale\",\"description\":\"Tips, Tricks, Fixed-Errors, Tutorials &amp; Guides\",\"publisher\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/itsupportwale.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/#organization\",\"name\":\"itsupportwale\",\"url\":\"https:\/\/itsupportwale.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2023\/09\/cropped-Logo-trans-without-slogan.png\",\"contentUrl\":\"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2023\/09\/cropped-Logo-trans-without-slogan.png\",\"width\":1119,\"height\":144,\"caption\":\"itsupportwale\"},\"image\":{\"@id\":\"https:\/\/itsupportwale.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/Itsupportwale-298547177495978\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/itsupportwale.com\/blog\/#\/schema\/person\/8c5a2b3d36396e0a8fd91ec8242fd46d\",\"name\":\"Techie\",\"sameAs\":[\"https:\/\/itsupportwale.com\",\"iswblogadmin\"],\"url\":\"https:\/\/itsupportwale.com\/blog\/author\/iswblogadmin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"10 React Best Practices for High-Performance Apps - ITSupportWale","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/","og_locale":"en_US","og_type":"article","og_title":"10 React Best Practices for High-Performance Apps - ITSupportWale","og_description":"I looked at the node_modules folder today. It\u2019s 400MB. For a landing page. We\u2019re done playing games. Back in my day, we managed memory. We cared about the heap. We knew where every byte lived and, more importantly, when it died. Now? I walk into this &#8220;modern&#8221; repository and it\u2019s like walking into a landfill. ... Read more","og_url":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/","og_site_name":"ITSupportWale","article_publisher":"https:\/\/www.facebook.com\/Itsupportwale-298547177495978","article_published_time":"2026-02-12T16:01:36+00:00","og_image":[{"width":512,"height":512,"url":"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2021\/05\/android-chrome-512x512-1.png","type":"image\/png"}],"author":"Techie","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Techie","Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#article","isPartOf":{"@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/"},"author":{"name":"Techie","@id":"https:\/\/itsupportwale.com\/blog\/#\/schema\/person\/8c5a2b3d36396e0a8fd91ec8242fd46d"},"headline":"10 React Best Practices for High-Performance Apps","datePublished":"2026-02-12T16:01:36+00:00","mainEntityOfPage":{"@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/"},"wordCount":1718,"commentCount":0,"publisher":{"@id":"https:\/\/itsupportwale.com\/blog\/#organization"},"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/","url":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/","name":"10 React Best Practices for High-Performance Apps - ITSupportWale","isPartOf":{"@id":"https:\/\/itsupportwale.com\/blog\/#website"},"datePublished":"2026-02-12T16:01:36+00:00","breadcrumb":{"@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/itsupportwale.com\/blog\/10-react-best-practices-for-high-performance-apps\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/itsupportwale.com\/blog\/"},{"@type":"ListItem","position":2,"name":"10 React Best Practices for High-Performance Apps"}]},{"@type":"WebSite","@id":"https:\/\/itsupportwale.com\/blog\/#website","url":"https:\/\/itsupportwale.com\/blog\/","name":"ITSupportWale","description":"Tips, Tricks, Fixed-Errors, Tutorials &amp; Guides","publisher":{"@id":"https:\/\/itsupportwale.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/itsupportwale.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/itsupportwale.com\/blog\/#organization","name":"itsupportwale","url":"https:\/\/itsupportwale.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/itsupportwale.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2023\/09\/cropped-Logo-trans-without-slogan.png","contentUrl":"https:\/\/itsupportwale.com\/blog\/wp-content\/uploads\/2023\/09\/cropped-Logo-trans-without-slogan.png","width":1119,"height":144,"caption":"itsupportwale"},"image":{"@id":"https:\/\/itsupportwale.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/Itsupportwale-298547177495978"]},{"@type":"Person","@id":"https:\/\/itsupportwale.com\/blog\/#\/schema\/person\/8c5a2b3d36396e0a8fd91ec8242fd46d","name":"Techie","sameAs":["https:\/\/itsupportwale.com","iswblogadmin"],"url":"https:\/\/itsupportwale.com\/blog\/author\/iswblogadmin\/"}]}},"_links":{"self":[{"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/posts\/4586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/comments?post=4586"}],"version-history":[{"count":0,"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/posts\/4586\/revisions"}],"wp:attachment":[{"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/media?parent=4586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/categories?post=4586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itsupportwale.com\/blog\/wp-json\/wp\/v2\/tags?post=4586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}