Web Storage API: Beyond Cookies

web-fundamentals-tcpip-debugging-interview-q 🚨 Interview Trap: "My API is slow, let's optimize the database!" Stop. Before you refactor code, check the wire. 🛑 In 2026, with complex microservices and containerized environments, web performance bottlenecks often hide in the `TCP/IP` layer, not the application logic. 🔹 **The Senior-Level Breakdown:** Understanding `TCP` behavior is critical when: • You see high `RTT` causing `Slow Start` delays on mobile networks. • `Packet loss` triggers `Congestion Control` algorithms (like `CUBIC` or `BBR`) to throttle throughput. • `TCP Window Scaling` is misconfigured, capping your bandwidth on high-speed links. • `Head-of-Line Blocking` in `TCP` (vs `QUIC/HTTP3`) stalls multiple requests on a single connection. 🛠️ **The Fix:** Don't just guess. Use `tcpdump`, `Wireshark`, or modern `eBPF` tracing to visualize `ACK` delays, `RST` flags, and `CWND` behavior. If the `TCP handshake` or `retransmissions` are the issue, no amount of backend optimization will help. Found this useful? Follow for more such interview questions and save post for your next prep session! #WebFundamentals,#WebDev,#Interviews,#CodingTips,#NetworkEngineering

Struggling to crack your next frontend interview? You’re not alone. With ReactJS being one of the most in-demand skills, mastering the right concepts can give you a serious edge. At InterviewBuzz, we’ve simplified your journey with expert-curated resources to help you prepare smarter, not harder. 💡 What you’ll learn: ✔ Core React concepts (Components, JSX, Props & State) ✔ Advanced topics like Hooks, Context API & Virtual DOM ✔ Real-world interview questions & answers ✔ Performance optimization techniques ✔ Latest React trends (React 18+ features) React is widely used for building fast, scalable, and interactive user interfaces, making it a must-have skill for modern developers. 🔥 Whether you're a beginner or an experienced developer, this guide will help you boost confidence and crack interviews faster. 👉 Start your preparation now: https://lnkd.in/dVAPYxAk #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #CodingInterview #InterviewPreparation #TechCareers #Developers #ReactInterview #LearnToCode #Programming #CareerGrowth

𝗔𝗥𝗥𝗔𝗬 𝗙𝗟𝗔𝗧𝗧𝗘𝗡 𝗜𝗡 𝗝𝗔𝗩𝗔𝗦𝗖𝗥𝗜𝗣𝗧 Flattening arrays changes nested lists into single-level arrays. You use this in everyday coding and job interviews. Nested arrays hold other arrays. For example: [1, [2, 3], [4, [5, 6]]]. Think of it as a tree with branches. Flattening helps in three ways: - Data normalization: API responses turn into simple lists. - Simplified manipulation: Sorting or searching flat arrays is easy. - Compatibility: UI components like drop downs need flat data. Example: Input [1, [2, 3], [4, [5, 6]]] becomes [1, 2, 3, 4, 5, 6]. JavaScript provides several ways to flatten: - .flat(): Built-in method. .flat() flattens one level. Use .flat(Infinity) for all levels. - Recursion: Function calls itself to break down nested arrays. - reduce(): Accumulate elements while handling nested arrays. - Iterative stack: Use a stack to process elements without recursion. In interviews, you may face: - Flatten without .flat(). - Flatten to a specific depth. - Handle empty slots. Knowing flattening helps with tree data like JSON or the DOM. It makes your code simpler. Source: https://lnkd.in/giQPi46a

🔹 .NET Interview Questions & Answers (1–2 Years Experience) ------- 1️⃣ What is .NET? .NET is a free, open-source developer platform by Microsoft used to build web, desktop, mobile, cloud, and API applications. --- 2️⃣ What is CLR? CLR (Common Language Runtime) manages memory, garbage collection, exception handling, and execution of .NET applications. --- 3️⃣ Difference between var and dynamic? var → Compile-time type checking dynamic → Run-time type checking --- 4️⃣ What is ASP.NET Core? ASP.NET Core is a cross-platform, high-performance framework used to build modern web apps and REST APIs. --- 5️⃣ What is MVC? MVC (Model-View-Controller) separates application logic: Model → Business logic & data View → UI Controller → Handles requests --- 6️⃣ Difference between ViewData, ViewBag, TempData? ViewData → Request scoped ViewBag → Dynamic, request scoped TempData → Used between redirects --- 7️⃣ What is Dependency Injection? A design pattern where objects are provided to a class instead of creating them inside the class. --- 8️⃣ What is Web API? Web API is used to build RESTful services that support HTTP methods like GET, POST, PUT, DELETE. --- 9️⃣ Difference between IEnumerable and IQueryable? IEnumerable → In-memory execution IQueryable → Database-level execution --- 🔟 What is Entity Framework Core? EF Core is an ORM that allows developers to work with databases using C# objects instead of SQL queries. --- 11. What is Garbage Collection in .NET? Garbage Collection automatically frees unused managed memory to improve application performance. --- 12. What is Middleware in ASP.NET Core? Middleware is a component that handles HTTP requests and responses in the request pipeline. Example: Authentication, Logging, Exception handling.

Rest API Interview Question ----------------------------------------- What is REST? What are the principles of REST architecture? What are HTTP methods? What is statelessness in REST? What is a resource in REST? What is URI vs URL? What is idempotency? Difference between PUT and PATCH? What is safe method in HTTP? What is RESTful API? What are HTTP status codes? What is content negotiation? What are request and response headers? What is HATEOAS? What is the difference between @PathVariable and @RequestParam? What is @RestController in Spring Boot? What is @RequestBody? What is @ResponseBody? What is the difference between @Controller and @RestController? How do you validate request data in Spring Boot? How do you handle exceptions globally in REST APIs? How do you secure REST APIs? What is JWT and how does it work? What is OAuth2? What is API versioning and how do you implement it? What is pagination in REST APIs? How do you handle large payloads? What is rate limiting? What is API throttling? What is CORS? 🔹 Scenario-Based Questions How do you design a REST API for high scalability? How do you handle millions of requests in REST API? How do you reduce API latency? How do you ensure API security in production? How do you handle concurrent requests? How do you implement logging in REST APIs? How do you debug a slow API? How do you handle partial failures in microservices? How do you design fault-tolerant APIs? How do you optimize database calls in REST APIs?

react-router-under-the-hood-interview-q Interview Trap: "React Router just conditionally renders components based on the URL." 🚫 If you stop there, you're missing the magic. Under the hood, React Router (especially v7) is a full-stack data router that manages the entire request lifecycle, not just the view layer. Senior Breakdown: 1️⃣ `History` API: It hijacks the browser's `pushState`/`replaceState` to update the URL without a full page reload, maintaining the SPA illusion. 2️⃣ `useLocation` & `useNavigate`: These hooks subscribe to the internal `history` object, triggering re-renders only when the `pathname` or `search` params change. 3️⃣ Data Loading (v7): The biggest shift. `loaders` and `actions` run *before* the component mounts. This means data is fetched on the server (or client) and streamed in, preventing the dreaded "loading state waterfall." 4️⃣ `React.startTransition()`: In v7, navigation updates are wrapped in `startTransition()`. This tells React to treat the navigation as non-urgent, allowing the UI to stay responsive even while heavy route components are rendering. 5️⃣ Nested Layouts: The `Outlet` component isn't just a placeholder; it's a recursive rendering mechanism that allows parent routes to render children, enabling powerful nested layouts without prop drilling. Understanding this flow is the difference between a junior who "uses" a library and a senior who "architects" with it. Found this useful? Follow for more such interview questions and save post for your next prep session! #React,#WebDev,#Interviews,#CodingTips,#Frontend

🚀 .NET Interview Questions I’ve Faced (and You Should Prepare Too) If you're preparing for .NET interviews, don’t just focus on basics — Real interviews test design thinking + real-world experience 👇 🔹 Core & Design 👉 What design patterns have you used in real projects? 👉 How do you apply SOLID principles in your code? 👉 Dependency Injection vs Singleton — which one and why? 👉 Difference between abstract class and interface? 🔹 Architecture & Scalability 👉 If traffic suddenly spikes, how will you handle it? 👉 How do you design a scalable system in .NET? 👉 How do you implement caching (MemoryCache / Redis)? 👉 Monolith vs Microservices — when to choose what? 🔹 Backend & APIs 👉 How do you implement REST APIs in ASP.NET Core? 👉 How do you handle API versioning? 👉 How do you secure APIs (JWT / OAuth)? 👉 How do you implement global exception handling? 🔹 Data & Performance 👉 How do you use LINQ efficiently in backend? 👉 IEnumerable vs IQueryable? 👉 Lazy loading vs Eager loading — when to use? 👉 How do you optimize slow SQL queries? 🔹 System & Internals 👉 What is CLR? 👉 How does Garbage Collection work? 👉 What happens internally when a request hits ASP.NET Core? 👉 Middleware pipeline — how it works? 🔹 Real-World Scenarios 👉 Kafka vs Azure Service Bus — which one and why? 👉 What’s the difference between FHIR and HL7? (Healthcare devs 👀) 👉 If your website goes down, what’s the first thing you check? 👉 How do you debug production issues? 💡 Reality: Interviews are not about remembering answers… They’re about how you think and solve problems. 📌 Save this for your next interview 💬 Comment “.NET” if you want detailed answers for each 🔔 Follow for more — TechClarityWithVijay 👤 Vijay Narayan Mishra #dotnet #softwareengineering #backenddeveloper #interviewprep #systemdesign #developers #TechClarityWithVijay

80% of SQL candidates struggle in interviews. Don’t be one of them. Most fail not because SQL is hard, but because their approach isn’t structured. SQL is the backbone of data-driven decision-making. From startups to MNCs, every company relies on it to manage and analyze data. Yet most candidates fail not because SQL is hard, but because their approach is wrong. If you want to crack your next SQL interview with confidence, follow this structured roadmap 👇 1️⃣ Master the Fundamentals Start with the basics: ✔ SELECT, WHERE, ORDER BY ✔ JOINS (INNER, LEFT, RIGHT) ✔ GROUP BY + Aggregates (COUNT, SUM, AVG, MIN, MAX) 2️⃣ Level Up with Advanced Concepts This is where most candidates struggle: ✔ Subqueries (correlated & non-correlated) ✔ CTEs ✔ Window Functions (ROW_NUMBER, RANK, OVER) ✔ Query optimization 3️⃣ Practice Like a Pro Theory isn’t enough. ✔ Solve real problems on LeetCode, HackerRank ✔ Focus on clean and optimized queries 4️⃣ Understand Database Design Go beyond queries: ✔ Normalization ✔ Keys (Primary & Foreign) ✔ Indexing ✔ ACID properties Follow Ravikar bagri for more valuable content

I used to see people commenting 'KIT' on every .NET post — and honestly, most of the time there was no kit to send. 😅 So I built one. 🔥 Introducing the FREE .NET Interview Prep Kit by themindstationHQ No PDFs. No sign-ups. Just open the link and start learning. Inside you'll find 22 real interview questions across 6 topics: → Dependency Injection, Middleware, IEnumerable vs IQueryable → ASP.NET Core (Controllers, Routing, Model Binding, Filters) → Entity Framework Core (Tracking, Lazy Loading, LINQ) → SQL Basics (Joins, Indexes, Normalization) → JWT Authentication flow → Coding questions with full working examples Every question has: ✅ How to answer it (not just what the answer is) ✅ Real C# code examples ✅ Interview tips that actually help you stand out This is for every .NET developer who has an interview coming up and needs clarity — not memorization. 🔗 https://lnkd.in/guSQ6K6E Save this post. Share it with someone preparing right now. If this helped you, drop a 🙌 below — it tells me to keep building more of these. #dotnet #csharp #aspnetcore #softwaredeveloper #interviewprep #coding #webdevelopment #themindstationHQ

Cracking .NET Interviews in 2026 Doesn’t Have to Be Hard Most developers don’t fail because they lack skills — they fail because they prepare the wrong way. After analyzing 100+ real .NET interviews, I noticed a clear pattern: The same core concepts get tested again and again But very few candidates truly master them So I built something practical Full .NET Interview Handbook 2026 A focused guide designed to help you prepare smarter not longer. What’s inside: C# (OOP, SOLID, Async/Await) ASP.NET Core (Web API, JWT, Middleware) Entity Framework Core (Real-world scenarios) SQL (Joins, Indexing, Optimization) System Design (Microservices + Azure basics) Whether you have 2 or 8 years of experience, this is built to help you: Understand what interviewers actually expect Strengthen fundamentals that matter Approach interviews with confidence If you’ve been facing rejections or feeling stuck — this might be the shift you need. Start preparing the right way #dotnet #aspnetcore #csharp #sql #fullstackdeveloper #softwareengineer #interviewpreparation #azure #systemdesign