SSShivani Sodhainjavacript-new.hashnode.dev·5h ago · 8 min readFunction Declaration vs Function Expression: What’s the Difference?What are functions and why we need them🤔 ? Think about Akshay Kumar's daily routine. He's known for waking up at 5 AM every morning. Now imagine if he had to open the Clock app every night and manu00
SNShalini Nigaminblog-of-shalini.hashnode.dev·20h ago · 5 min readBlocking vs Non-Blocking Code in Node.jsUnderstanding the difference between blocking and non-blocking execution is the single most important concept in Node.js. Get it right, and your server can handle thousands of concurrent users with ea00
KSKanishka Shashiinnodej.hashnode.dev·20h ago · 11 min readState Management in React: Context API, Prop Drilling, React.memo, useMemo, and useCallbackWhy Does Managing State Become Difficult as Applications Grow? Imagine you're building a simple React application. It starts with just a few components—a login page, a navigation bar, and a dashboard.00
KSKanishka Shashiinnodej.hashnode.dev·20h ago · 11 min readBuilding Scalable Systems: Caching, Rate Limiting, and ObservabilityWhat Happens When Your Application Suddenly Gets One Million Users? Imagine this. You launch a new product after months of development. Marketing campaigns go live, influencers start talking about it,00
KSKanishka Shashiinhtml-dev09.hashnode.dev·20h ago · 17 min readRealtime Systems: Polling, WebSockets, SSE, and Pub/SubThe question that started it all How does WhatsApp deliver a message instantly? You send a message, and it appears on your friend's phone within a fraction of a second — no refresh button, no waiting.00
KSKanishka Shashiinhtml-dev09.hashnode.dev·20h ago · 25 min readModern Next.js: Routing, Layouts, Server Components, API Routes & Server ActionsThe question that started it all Can a React application have both frontend and backend inside the same project? For most of React's history, the honest answer was "not really, not cleanly." A typical00
ASAbdul Samadinabdulsamad30.hashnode.dev·1d ago · 10 min readReact Hooks Explained: useState, useEffect, and Custom HooksHow does React remember information between renders? That's the core question hooks answer. Before hooks, React components were split into two worlds class components that could hold state and manage 00
ASAbdul Samadinabdulsamad30.hashnode.dev·1d ago · 12 min readReact Fundamentals: Components, JSX, State, and Re-renderingJavaScript already existed. The browser had APIs. You could manipulate the DOM directly. So why did developers build React at all? Because as UIs got more complex, vanilla DOM manipulation turned into00
ASAbdul Samadinabdulsamad30.hashnode.dev·1d ago · 12 min readState Management and Performance Optimization in ReactManaging state feels simple when you have three components. It stops feeling simple the moment your app grows into a real product. Data needs to live in the right place, updates need to stay fast, and00
MAMehul Arorainmehularora505.hashnode.dev·1d ago · 11 min readWhat Really Happens When You Hit That Enter Button?? 🤔So you type a question into ChatGPT, hit Enter, and boom — words start appearing on your screen, one after another, like the AI is typing back to you in real time. And somewhere in your head a tiny vo00
