Low-Level Design for MAANG Interviews

A book-shaped table of contents for LLD interview prep: OOP fundamentals through SOLID, design principles, UML, design patterns, dependency management, reliability, concurrency, domain modeling, API design, testing, refactoring, classic interview problems, advanced architecture, and performance — cross-linking Object-Oriented Programming and Patterns instead of duplicating them.

1 — LLD Interview Framework

Walks through the repeatable ten-step LLD interview sequence, from clarifying requirements through naming trade-offs, that anchors every chapter in this Part.

2 — Communicating During LLD Interviews

Covers how to narrate design decisions out loud during an LLD interview so the interviewer can follow the reasoning, not just the diagram.

3 — Whiteboard Design Techniques

Covers layout and sequencing techniques for sketching classes, relationships, and flows on a whiteboard (or shared doc) under interview time pressure.

4 — Common Interview Mistakes

Catalogs the recurring LLD interview failure modes — jumping to code too early, over-engineering, skipping requirement clarification — and how to avoid them.