Learn how to improve your React app for SEO. Use best practices like SSR, SSG, React Helmet, structured data, and speed ...

Beyond the usual quick tips, let's look at both the business case and the technical side of keeping React bundles lean.

It depends on a single input, count. We can use computeExpensiveValue(count), [count]) to tell react: only run this function if the count has changed; otherwise, return the cached computation.