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Tech Blog & Engineering Masterclasses

In-depth developer guides on V8 internals, Python architecture, SQL, Next.js, and placement drives.

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🌐 All Articles (39) 🚀 Backend & SaaS (0) 🐍 Python & Backend (5) 🚀 Django & Web Architecture (3) 🗄️ Database & SQL (2) 🧩 Data Structures & Algorithms (5) 🎯 Interview Prep & Database (12) 💼 Career & Git Roadmaps (4) 🎨 UI & Design Systems (1) ⚡ JavaScript & Engines (2) ⚛️ Frontend & Next.js (2) 🛠️ Developer Tooling & Compilers (3)
Kashinath Chavan Kashinath Chavan • Interview Prep & Database • Aug 22

System Design Interview: Designing Twitter Feed, WhatsApp & YouTube Architecture

Step-by-step system design walkthroughs for FAANG interviews. Learn how to design scalable distributed systems for Twitter's news feed, WhatsApp's messaging, and YouTube's video pipeline with CAP theorem, consistent hashing, and sharding explained.

⏱️ 5 min read 👁️ 5215 views 👏 693 claps ⭐ Featured
System Design Interview: Designing Twitter Feed, WhatsApp & YouTube Architecture
Kashinath Chavan Kashinath Chavan • Frontend & Next.js • Aug 20

React 19 Deep Dive: Actions, useOptimistic, useFormStatus & Concurrent Rendering

React 19 is the biggest release since React 16 hooks. Actions replace useEffect form submissions, useOptimistic enables instant UI feedback, and React Compiler eliminates manual memoization. Complete guide with working code examples.

⏱️ 5 min read 👁️ 3652 views 👏 445 claps
React 19 Deep Dive: Actions, useOptimistic, useFormStatus & Concurrent Rendering
Kashinath Chavan Kashinath Chavan • Data Structures & Algorithms • Aug 17

LeetCode 75: Two Pointers, Sliding Window & Binary Search with Pattern Recognition

Stop memorising solutions. Learn the 5 core algorithmic patterns that solve 80% of LeetCode problems. Two Pointers, Sliding Window, Binary Search, and more with 15 solved problems, Big-O analysis, and interview strategy.

⏱️ 5 min read 👁️ 4782 views 👏 621 claps
LeetCode 75: Two Pointers, Sliding Window & Binary Search with Pattern Recognition
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