{"id":4781,"date":"2026-05-06T22:20:21","date_gmt":"2026-05-06T16:50:21","guid":{"rendered":"https:\/\/itsupportwale.com\/blog\/react-best-practices-guide\/"},"modified":"2026-05-06T22:20:21","modified_gmt":"2026-05-06T16:50:21","slug":"react-best-practices-guide","status":"publish","type":"post","link":"https:\/\/itsupportwale.com\/blog\/react-best-practices-guide\/","title":{"rendered":"React Best Practices &#8211; Guide"},"content":{"rendered":"<p>The AWS bill arrived at 3:00 AM, and it was $14,000 higher than last month. I didn&#8217;t even have to look at the logs to know which &#8216;React Best&#8217; practices you lot ignored this time.<\/p>\n<p>I have spent the last 72 hours staring at Chrome DevTools memory profiles and AWS CloudWatch metrics while the rest of you were likely sleeping or watching &#8220;Clean Code&#8221; tutorials on YouTube that have no basis in reality. We are currently running React v18.3.1 on Vite v5.4.0, and yet, somehow, the engineering team managed to treat our production environment like a sandbox for unoptimized garbage.<\/p>\n<p>This is not a suggestion. This is a post-mortem. Read it, internalize it, or find another profession where your &#8220;aesthetic&#8221; code doesn&#8217;t cost the company five figures in a single weekend.<\/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-6a03a57a53a0f\" 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-6a03a57a53a0f\"  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\/react-best-practices-guide\/#SECTION_1_THE_FINANCIAL_IMPACT_OF_ARCHITECTURAL_INCOMPETENCE\" >SECTION 1: THE FINANCIAL IMPACT OF ARCHITECTURAL INCOMPETENCE<\/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\/react-best-practices-guide\/#SECTION_2_ROOT_CAUSE_ANALYSIS_AND_DEPENDENCY_BLOAT\" >SECTION 2: ROOT CAUSE ANALYSIS AND DEPENDENCY BLOAT<\/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\/react-best-practices-guide\/#SECTION_3_THE_RE-RENDER_DEATH_SPIRAL_THE_COUNTER_DISASTER\" >SECTION 3: THE RE-RENDER DEATH SPIRAL (THE COUNTER DISASTER)<\/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\/react-best-practices-guide\/#SECTION_4_THE_FALSE_IDOLS_OF_%E2%80%9CCLEAN_CODE%E2%80%9D\" >SECTION 4: THE FALSE IDOLS OF &#8220;CLEAN CODE&#8221;<\/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\/react-best-practices-guide\/#SECTION_5_MEMOIZATION_OVERHEAD_AND_THE_FIBER_TREE\" >SECTION 5: MEMOIZATION OVERHEAD AND THE FIBER TREE<\/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\/react-best-practices-guide\/#SECTION_6_THE_DATA_FETCHING_CATASTROPHE\" >SECTION 6: THE DATA FETCHING CATASTROPHE<\/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\/react-best-practices-guide\/#SECTION_7_THE_%E2%80%9CMAGIC%E2%80%9D_OF_ABSTRACTION_IS_KILLING_US\" >SECTION 7: THE &#8220;MAGIC&#8221; OF ABSTRACTION IS KILLING US<\/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\/react-best-practices-guide\/#SECTION_8_MANDATORY_RECOVERY_STEPS\" >SECTION 8: MANDATORY RECOVERY STEPS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/itsupportwale.com\/blog\/react-best-practices-guide\/#Related_Articles\" >Related Articles<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_1_THE_FINANCIAL_IMPACT_OF_ARCHITECTURAL_INCOMPETENCE\"><\/span>SECTION 1: THE FINANCIAL IMPACT OF ARCHITECTURAL INCOMPETENCE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Let\u2019s talk numbers, because clearly, the technical debt doesn&#8217;t scare you. Our infrastructure is designed to scale horizontally, but it is not designed to subsidize your inability to manage a component lifecycle.<\/p>\n<p>The $14,000 spike was primarily driven by two factors:<br \/>\n1. <strong>API Gateway &amp; Lambda Over-invocation:<\/strong> A &#8220;Data Fetching&#8221; component in the dashboard was re-mounting every time a user moved their mouse. This resulted in 4.2 million unnecessary requests to our <code>\/api\/v1\/user\/stats<\/code> endpoint over a 48-hour period.<br \/>\n2. <strong>Data Egress:<\/strong> Because the junior team decided to fetch the <em>entire<\/em> user object (including a 2MB JSON blob of historical logs) instead of just the counter value, we moved nearly 8TB of data out of our VPC.<\/p>\n<p>If you want to achieve the <strong>react best<\/strong> performance metrics, stop treating the network like it\u2019s free and the CPU like it\u2019s infinite. We are paying for every byte you lazily request because you couldn&#8217;t be bothered to write a selector or a proper <code>useEffect<\/code> dependency array.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_2_ROOT_CAUSE_ANALYSIS_AND_DEPENDENCY_BLOAT\"><\/span>SECTION 2: ROOT CAUSE ANALYSIS AND DEPENDENCY BLOAT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I ran a <code>npm list --depth=0<\/code> on the production branch. What I saw was a graveyard of &#8220;trendy&#8221; abstractions. You\u2019ve pulled in three different animation libraries, two state management wrappers, and a &#8220;utility&#8221; library that we already implemented in-house three years ago.<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\"># Terminal Output: Dependency Audit\n$ npm list --depth=0\n\u251c\u2500\u2500 @tanstack\/react-query@5.0.0\n\u251c\u2500\u2500 framer-motion@11.0.0\n\u251c\u2500\u2500 lodash@4.17.21 (Why? We use ES6)\n\u251c\u2500\u2500 react-use@17.5.0 (90% unused)\n\u251c\u2500\u2500 react@18.3.1\n\u251c\u2500\u2500 vite@5.4.0\n\u2514\u2500\u2500 zustand@4.5.0\n# Total node_modules size: 842MB\n# Critical Vulnerabilities: 4\n<\/code><\/pre>\n<p>The heap snapshots from the production crash tell a darker story. The JS heap was climbing at a rate of 15MB per minute per active session. Why? Because someone thought it was a good idea to attach event listeners to the <code>window<\/code> object inside a component without a cleanup function.<\/p>\n<pre class=\"codehilite\"><code class=\"language-text\"># Terminal Output: Top Command during Meltdown\nPID    COMMAND      %CPU     TIME     MEM\n44021  node         98.2     14:22.11 1.4G\n44022  node         97.8     14:18.04 1.3G\n# Note: Garbage collection (GC) is thrashing, unable to reclaim memory.\n<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_3_THE_RE-RENDER_DEATH_SPIRAL_THE_COUNTER_DISASTER\"><\/span>SECTION 3: THE RE-RENDER DEATH SPIRAL (THE COUNTER DISASTER)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Let\u2019s look at the &#8220;Counter&#8221; component that was supposed to be a simple internal tool for the warehouse team. This is the &#8220;tutorial-style&#8221; code I found in the repo. It is a masterclass in how to destroy a browser&#8217;s main thread.<\/p>\n<p><strong>THE BROKEN CODE:<\/strong><\/p>\n<pre class=\"codehilite\"><code class=\"language-javascript\">\/\/ src\/components\/Counter.jsx\nimport React, { useState, useEffect } from 'react';\n\nexport const Counter = () =&gt; {\n  const [count, setCount] = useState(0);\n  const [data, setData] = useState(null);\n\n  \/\/ Problem 1: The Infinite Loop\n  useEffect(() =&gt; {\n    const timer = setInterval(() =&gt; {\n      setCount(count + 1); \/\/ Closure trap: count is always 0 here\n    }, 1000);\n    \/\/ Missing cleanup function!\n  }); \n\n  \/\/ Problem 2: Fetching on every single render\n  fetch('https:\/\/api.internal\/stats')\n    .then(res =&gt; res.json())\n    .then(json =&gt; setData(json));\n\n  return (\n    &lt;div&gt;\n      &lt;h1&gt;Count: {count}&lt;\/h1&gt;\n      &lt;pre&gt;{JSON.stringify(data)}&lt;\/pre&gt;\n    &lt;\/div&gt;\n  );\n};\n<\/code><\/pre>\n<p>This code is an insult to the profession. Because <code>useEffect<\/code> lacks a dependency array, it runs on <em>every<\/em> render. The <code>fetch<\/code> call triggers a <code>setData<\/code>, which triggers a re-render, which triggers another <code>fetch<\/code>. This is the &#8220;Death Spiral.&#8221; On top of that, the <code>setInterval<\/code> is never cleared. Every time this component re-renders (which is 60 times a second during the fetch loop), a <em>new<\/em> interval is created. <\/p>\n<p>Within five minutes, the user&#8217;s browser has 3,000 active intervals trying to update the state. To reach the <strong>react best<\/strong> level of stability, you must understand that the <code>useEffect<\/code> hook is not a lifecycle method; it is a synchronization tool.<\/p>\n<p><strong>THE FIX:<\/strong><\/p>\n<pre class=\"codehilite\"><code class=\"language-javascript\">\/\/ src\/components\/Counter.fixed.jsx\nimport React, { useState, useEffect, useCallback } from 'react';\n\nexport const Counter = () =&gt; {\n  const [count, setCount] = useState(0);\n  const [data, setData] = useState(null);\n\n  \/\/ Fix 1: Functional updates and proper cleanup\n  useEffect(() =&gt; {\n    const timer = setInterval(() =&gt; {\n      setCount(prev =&gt; prev + 1);\n    }, 1000);\n    return () =&gt; clearInterval(timer); \/\/ Cleanup is mandatory\n  }, []); \/\/ Empty array: run once on mount\n\n  \/\/ Fix 2: Memoized fetching with AbortController\n  const fetchData = useCallback(async (signal) =&gt; {\n    try {\n      const res = await fetch('https:\/\/api.internal\/stats', { signal });\n      const json = await res.json();\n      setData(json);\n    } catch (err) {\n      if (err.name !== 'AbortError') console.error(err);\n    }\n  }, []);\n\n  useEffect(() =&gt; {\n    const controller = new AbortController();\n    fetchData(controller.signal);\n    return () =&gt; controller.abort();\n  }, [fetchData]);\n\n  return (\n    &lt;div&gt;\n      &lt;h1&gt;Count: {count}&lt;\/h1&gt;\n      {data &amp;&amp; &lt;StatsDisplay data={data} \/&gt;}\n    &lt;\/div&gt;\n  );\n};\n<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_4_THE_FALSE_IDOLS_OF_%E2%80%9CCLEAN_CODE%E2%80%9D\"><\/span>SECTION 4: THE FALSE IDOLS OF &#8220;CLEAN CODE&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I am tired of seeing &#8220;Clean Code&#8221; used as an excuse for over-abstraction. You\u2019ve created a <code>useUserStatsCustomHook<\/code> that calls a <code>useBaseFetchHook<\/code> that calls a <code>useAxiosWrapperHook<\/code>. By the time the data reaches the UI, it has passed through five layers of unnecessary abstraction, making it impossible to trace where a memory leak originates.<\/p>\n<p>In React v18.3.1, the reconciliation engine is highly optimized, but it cannot save you from your own &#8220;cleverness.&#8221; When you wrap every single primitive in a custom hook, you are increasing the overhead of the fiber tree. Each hook is a node in that tree. You are literally making the reconciliation cycle slower because you want your code to look like a poem.<\/p>\n<p>Stop using &#8220;Clean Code&#8221; as a shield for not understanding how the JavaScript engine works. If you want to write <strong>react best<\/strong> implementations, you need to care more about the heap than the &#8220;readability&#8221; of a three-line function. Code is read by humans, but it is executed by machines. If the machine chokes, the human readability doesn&#8217;t matter.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_5_MEMOIZATION_OVERHEAD_AND_THE_FIBER_TREE\"><\/span>SECTION 5: MEMOIZATION OVERHEAD AND THE FIBER TREE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>I saw <code>useMemo<\/code> and <code>useCallback<\/code> used on every single variable in the <code>Dashboard<\/code> component. This is a fundamental misunderstanding of how React works. <\/p>\n<p>Memoization is not free. You are trading memory for CPU cycles. When you memoize a simple array of strings, you are forcing React to store that array in memory and perform a shallow comparison on every render. For small datasets, the comparison is more expensive than the re-creation of the object.<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\"># Terminal Output: Memory Profiler (Heap Snapshot)\nObjects: 452,012\nShallow Size: 24.1 MB\nRetained Size: 158.4 MB\n# Note: Massive retention in &quot;Memoized&quot; closures.\n<\/code><\/pre>\n<p>We are using Vite v5.4.0, which has an incredibly fast HMR (Hot Module Replacement). But your circular dependencies are breaking the module graph. When you import <code>UserCard<\/code> into <code>UserList<\/code> and <code>UserList<\/code> into <code>UserCard<\/code>, you are creating a dependency loop that forces Vite to reload the entire page instead of hot-patching the changed module. This slows down development and masks memory leaks that only appear after multiple re-renders.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_6_THE_DATA_FETCHING_CATASTROPHE\"><\/span>SECTION 6: THE DATA FETCHING CATASTROPHE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The second major failure was the &#8220;Data Fetching&#8221; component used in the global search bar. It was implemented using a naive <code>onChange<\/code> handler that triggered a state update on every keystroke, which in turn triggered a heavy API call.<\/p>\n<p><strong>THE BROKEN SEARCH:<\/strong><\/p>\n<pre class=\"codehilite\"><code class=\"language-javascript\">\/\/ src\/components\/SearchBar.jsx\nconst SearchBar = () =&gt; {\n  const [results, setResults] = useState([]);\n\n  const handleSearch = async (e) =&gt; {\n    const query = e.target.value;\n    \/\/ No debouncing. No cancellation.\n    const data = await fetch(`\/api\/search?q=${query}`).then(r =&gt; r.json());\n    setResults(data);\n  };\n\n  return &lt;input onChange={handleSearch} \/&gt;;\n};\n<\/code><\/pre>\n<p>If a user types &#8220;React Performance&#8221; (17 characters), this component fires 17 concurrent API requests. Because of network jitter, the 5th request might finish <em>after<\/em> the 17th request, overwriting the final results with stale data. This is a race condition that also happens to DDoS our own backend.<\/p>\n<p><strong>THE RECOVERY PLAN:<\/strong><br \/>\nWe are moving to a strict &#8220;No-Uncontrolled-Effects&#8221; policy. If I see a <code>useEffect<\/code> that doesn&#8217;t have a specific, documented reason for existing, it will be rejected in PR.<\/p>\n<ol>\n<li><strong>Debounce everything:<\/strong> Use a proper debouncing strategy for any input-driven side effect.<\/li>\n<li><strong>Abort Signals:<\/strong> Every fetch request must be cancelable. No exceptions.<\/li>\n<li><strong>Primitive State:<\/strong> Stop putting massive objects into state. Store IDs and fetch the data from a cache or a normalized store.<\/li>\n<li><strong>Strict Mode:<\/strong> We are enabling <code>React.StrictMode<\/code> in production for the next two weeks. Yes, it will double-invoke your effects. That\u2019s the point. If your code breaks under double-invocation, your code is broken.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_7_THE_%E2%80%9CMAGIC%E2%80%9D_OF_ABSTRACTION_IS_KILLING_US\"><\/span>SECTION 7: THE &#8220;MAGIC&#8221; OF ABSTRACTION IS KILLING US<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>You\u2019ve all become too comfortable with &#8220;magic.&#8221; You think that because you\u2019re using React 18, the &#8220;Concurrent Mode&#8221; will magically solve your performance issues. It won&#8217;t. Concurrent rendering just allows React to interrupt a long-running render; it doesn&#8217;t make your inefficient code run faster. In fact, if you have a memory leak, Concurrent Mode can actually make it harder to debug because the render phases are no longer linear.<\/p>\n<p>We are using Vite 5.4.0 because it is the fastest bundler on the market. But it can&#8217;t bundle its way out of a 1.2GB heap. We are seeing &#8220;Out of Memory&#8221; errors in the CI\/CD pipeline because the test suite is trying to mount components that never unmount their event listeners.<\/p>\n<pre class=\"codehilite\"><code class=\"language-bash\"># Terminal Output: Jest Test Failure\n[FAIL] src\/components\/GlobalHeader.test.jsx\n  \u25cf GlobalHeader \u203a should render without crashing\n\n    FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory\n<\/code><\/pre>\n<p>This is embarrassing. We are a &#8220;Senior&#8221; engineering team, and we are being defeated by a Counter component.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"SECTION_8_MANDATORY_RECOVERY_STEPS\"><\/span>SECTION 8: MANDATORY RECOVERY STEPS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Effective immediately, the following rules are in place:<\/p>\n<ol>\n<li><strong>Dependency Freeze:<\/strong> No new <code>npm<\/code> packages without a 1-on-1 review with me. If you want to add a 50kb library to save yourself 10 lines of code, the answer is no.<\/li>\n<li><strong>Profiling Requirement:<\/strong> Every PR that touches a &#8220;Global&#8221; component must include a screenshot of the Chrome DevTools &#8220;Performance&#8221; tab showing a stable 60fps during interaction.<\/li>\n<li><strong>The &#8220;UseEffect&#8221; Tax:<\/strong> For every <code>useEffect<\/code> you write, you must write a corresponding unit test that specifically checks for cleanup (e.g., ensuring <code>clearInterval<\/code> or <code>removeEventListener<\/code> was called).<\/li>\n<li><strong>Vite Optimization:<\/strong> We are moving to manual chunking in Vite to stop loading the entire admin dashboard for users who are just trying to log in.<\/li>\n<\/ol>\n<p>If you are confused about why these steps are necessary, then you haven&#8217;t been paying attention to the $14,000 hole in our budget. We are not a startup anymore; we can&#8217;t afford to &#8220;move fast and break things&#8221; when &#8220;breaking things&#8221; means the site is unusable for anyone with less than 32GB of RAM.<\/p>\n<p>I am going home to sleep for four hours. When I come back, I expect to see the &#8220;Counter&#8221; and &#8220;Data Fetching&#8221; fixes deployed to staging. If the heap size hasn&#8217;t dropped by at least 40%, we are going to start having very different conversations about the future of this team.<\/p>\n<p>Modern web development has become a race to see who can pile the most abstractions on top of a simple problem. We are stopping that race today. No more &#8220;magic.&#8221; No more &#8220;trendy&#8221; tutorials. Just efficient, documented, and performant code.<\/p>\n<p>Get it done.<\/p>\n<p>\u2014 Lead Systems Architect<\/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\/docker-compose-guide\/\">Docker Compose Guide<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/how-to-upgrade-to-python-3-10-on-ubuntu-18-04-and-20-04-lts\/\">How To Upgrade To Python 3 10 On Ubuntu 18 04 And 20 04 Lts<\/a><\/li>\n<li><a href=\"https:\/\/itsupportwale.com\/blog\/is-machine-learning-ai-understanding-the-key-differences\/\">Is Machine Learning Ai Understanding The Key Differences<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The AWS bill arrived at 3:00 AM, and it was $14,000 higher than last month. I didn&#8217;t even have to look at the logs to know which &#8216;React Best&#8217; practices you lot ignored this time. I have spent the last 72 hours staring at Chrome DevTools memory profiles and AWS CloudWatch metrics while the rest &#8230; <a title=\"React Best Practices &#8211; Guide\" class=\"read-more\" href=\"https:\/\/itsupportwale.com\/blog\/react-best-practices-guide\/\" aria-label=\"Read more  on React Best Practices &#8211; Guide\">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-4781","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>React Best Practices - Guide - 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\/react-best-practices-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React Best Practices - Guide - ITSupportWale\" \/>\n<meta property=\"og:description\" content=\"The AWS bill arrived at 3:00 AM, and it was $14,000 higher than last month. 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