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305 Topics across HLD & LLD — from Beginner to Interview-ready
Phase 1 · Start Here
LLD Introduction
Agentic AI · Foundations
Start here — learn the basics of system design
Object-oriented design & clean code
Master the skills every system designer needs
Reusable solutions to common problems
Senior/staff level depth + real system designs
Design real systems from scratch — code level
Grokking System Design
Practice: Design Problems
LLD Interview Questions
Scaling & Reliability
Database Essentials
APIs & Communication
Additional Patterns
Distributed Systems
Tips + Top Problems
Essential Topics
Full Curriculum
“Netflix streams 15% of global internet traffic. Their system design interview is literally "design yourself."”