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"I’m not listing everything you already know—just focusing on some less commonly discussed topics : ● OOPS: Study on GeeksforGeeks (GFG) Best Resource for OOPS. ● Puzzles: Practice GFG’s Top 100 Puzzles. ● Must-Study Topics: 1. SQL: Check Drive link PDF for overlooked SQL topics. 2. Project Architecture: Know your project’s design and choices. 3. Database Scaling & CAP Theorem: Understand scaling and trade-offs. 4. Rate Limiting: Learn API rate limiting basics. 5. Pagination: Study efficient data handling. 6. JWT Authentication: Know how JWT works for APIs. 7. JavaScript: Master Event Loop, Fetch API, debouncing, throttling. 8. Node.js Concurrency: Explain how single-threaded Node.js handles concurrency. 9. MVC Architecture: Understand Model-View-Controller basics. 10.React.js: Study Virtual DOM, state management, hooks, component lifecycle. 11.Java: Learn JDK, JRE, JVM flow, garbage collection, stack/heap memory"
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