Potta Vijay Kumar

In today’s fast-paced digital landscape, performance isn’t just a luxury — it’s a necessity. A delay of even 100 milliseconds can impact user experience and conversion rates. That's why monitoring front-end performance is crucial for any modern web application. Two powerful tools in the performance monitoring arsenal are Web Vitals and Google Lighthouse . Let's explore what they are, how they work, and how you can leverage them to ensure your applications stay lightning-fast and user-friendly. What Are Web Vitals? Web Vitals is an initiative by Google to provide unified guidance on essential metrics that matter most to user experience. The Core Web Vitals: Largest Contentful Paint (LCP): Measures loading performance. Target: < 2.5s First Input Delay (FID): Measures interactivity. Target: < 100ms Cumulative Layout Shift (CLS): Measures visual stability. Target: < 0.1 These metrics focus on actual user perception and interaction, helping developers prioritize real-...

In today’s landscape of scalable and modular software development, microservices have emerged as the go-to architecture for building complex applications. One of the key advantages of microservices is the clean separation of concerns — especially between the front-end and the back-end. This separation enables faster development, improved maintainability, and seamless scalability. What Are Microservices? Microservices are small, independently deployable services that communicate over lightweight protocols like HTTP or messaging queues. Each microservice is responsible for a specific business function and can be built using different languages, databases, or frameworks — making the system highly modular. Front-End and Back-End Separation Separating the front-end from the back-end in a microservices architecture involves: Creating a standalone front-end application (SPA or MPA) that consumes APIs exposed by individual microservices. Ensuring each microservice pro...

In the world of modern front-end development, efficient data fetching is critical to building high-performance, scalable applications. With the rise of frameworks like Next.js and the popularity of SPAs, tools like SWR, React Query, and Apollo Client have emerged as the go-to solutions. But how do they compare, and which one should you use? Let’s break it down. Why You Need a Data Fetching Library While fetch and axios handle the basics, real-world applications need: Caching Background revalidation Pagination Mutation support Optimistic updates Error and loading state management That's where libraries like SWR, React Query, and Apollo Client shine. SWR (Stale-While-Revalidate) From : Vercel Best for : Lightweight apps and static site generation (SSG) Pros: Minimal API and easy to get started Excellent for SSR/SSG in Next.js Automatic revalidation and focus tracking Small bundle size Cons: Limited ...

  Single Page Applications (SPA) vs. Multi-Page Applications (MPA) When building modern web applications, developers are often faced with the choice between Single Page Applications (SPA) and Multi-Page Applications (MPA) . Each architecture has its strengths, trade-offs, and ideal use cases. Understanding their differences is critical to choosing the right approach for your next project. What is a Single Page Application (SPA)? A Single Page Application loads a single HTML page and dynamically updates content as the user interacts with the app. Rather than loading new pages from the server, it uses JavaScript (often via frameworks like React, Angular, or Vue) to render updates. Advantages of SPA: Speed : Faster user interactions after the initial load. Fluid UX : No page reloads—transitions feel seamless. Efficient Data Handling : Ideal for API-driven apps. Challenges: SEO : Content isn't always readily crawlable by search engines. Ini...

In today’s global digital economy, your web application’s reach is no longer limited to one region, culture, or language. Whether you’re building a SaaS platform, an eCommerce storefront, or a mobile-friendly dashboard, accommodating users from different parts of the world is key to success. That’s where Internationalization (i18n) and Localization (l10n) come into play. What is Internationalization (i18n)? Internationalization is the process of designing and developing a software application so it can be adapted to various languages and regions without engineering changes. Think of it as laying the foundation for a multilingual, culturally adaptive app. Common internationalization practices: Using Unicode (e.g., UTF-8) for character encoding Separating UI text from the codebase (e.g., message files) Avoiding hardcoded strings, currencies, and date formats Structuring layouts to support left-to-right (LTR) and right-to-left (RTL) text What is Localization (l10n)? Localization is the ac...

Source : https://github.com/pottavijay/realtime-communication-app In today’s world of dynamic and interactive applications, real-time communication between the client and server is essential. Whether you're building a chat app, live dashboard, or stock ticker, how you deliver data matters — a lot. Three popular strategies dominate the landscape: Polling Server-Sent Events (SSE) WebSockets But how do you decide which one to use? Let’s explore each, compare them, and see where they fit best! 1. Polling What is Polling? Polling is the simplest method: the client sends HTTP requests at regular intervals asking, "Any updates?" Pros: Simple to implement Works everywhere (great browser support) No persistent connection needed Cons: High server load (lots of redundant requests) Latency between updates Inefficient for truly real-time apps Use When: Data updates are infrequent Real-time experience ...