LLD Handbook for Coding Interviews with Tharun Kumar Reddy Polu

A structured, easy-to-follow Low-Level Design (LLD) Handbook crafted to help you crack FAANG and top big tech system design interviews. This guide breaks down the art of object-oriented design into digestible, actionable concepts.

This handbook includes:

✅ Core OOP principles and SOLID design patterns simplified

✅ Step-by-step design approach to ace open-ended design problems

✅ Common interview-ready system designs (e.g. Parking Lot, Cab Booking, ATM, etc.)

✅ UML class diagrams & relationship breakdowns

✅ Scalable design considerations & extensibility techniques

✅ Edge cases & trade-offs you must think through

✅ Quick-reference markdown format for last-minute revision

Perfect for job seekers, job switchers, and anyone looking to build strong design intuition, communicate clearly in interviews, and stand out with well-structured, maintainable code architecture.