Interview Strike: React & .NET Interview Prep

React is powerful, but as apps grow, performance can suffer if we’re not careful. Extra re-renders, long lists, or heavy computations can slow down the user experience. Luckily, React provides built-in tools and patterns to keep apps fast and responsive. In this blog, we’ll explore 7 essential techniques for React performance optimization with definitions, explanations, and practical examples. 1. Reconciliation & Virtual DOM → How React Decides to Re-render Definition : React uses a Virtual DOM (a lightweight copy of the real DOM) and a process called Reconciliation to update UI efficiently. Explanation : When state/props change, React builds a new Virtual DOM tree. It compares the new tree with the old one (diffing algorithm). Only the changed parts are updated in the real DOM. Example : function Counter() {   const [count, setCount] = React.useState(0);   return (     <div>       <h2>Count: {count}</h2> {/* Only this updates */...