Architect to Lead

HLD & LLD
Mastery Course.

Master the art of building systems that scale to millions and codebases that survive for decades. The most comprehensive curriculum for modern software architects.

High-Level Design

Focus on the Macro. Scalability, Availability, and Data Flow across distributed services.

  • Load Balancers & CDNs
  • Sharding & Replication
  • Microservices Architecture
  • CAP Theorem Trade-offs

Low-Level Design

Focus on the Micro. Class diagrams, Design Patterns, and Machine Coding excellence.

  • SOLID Principles
  • Gang of Four Patterns
  • UML & Sequence Diagrams
  • Clean, Extensible Java Code

8-Week Roadmap

1

Phase 1: High-Level Design

  • Fundamentals
  • Scalability
  • Load Balancing
  • Database Design
  • Caching
  • Messaging
1Introduction to High-Level Design
2System Design Module 1: Introduction to Distributed Systems
3System Design Module 3: Scalability Basics (Vertical vs Horizontal)
4What is Load Balancing? A Simple Guide for Backend Engineers
5Database Indexing Deep Dive: B-Trees, Hash Indexes, and Query Planning
6System Design: Designing a Distributed Cache (Redis)
7System Design: Designing a Distributed Message Queue (Kafka)
2

HLD Case Studies

  • WhatsApp
  • YouTube
  • Payment System
  • Uber
  • TinyURL
1Case Study: Design a URL Shortener (Bitly)
2System Design: Designing WhatsApp (Real-time Messaging)
3Project Case Study: Designing YouTube (Video Streaming at Global Scale)
4Case Study: Design Uber (Ride-Hailing)
5Case Study: Design a Payment System (Stripe/UPI)
3

Phase 2: Low-Level Design

  • SOLID Principles
  • OOP Deep Dive
  • Design Patterns
  • Clean Code
  • UML
1LLD Masterclass Module 1: Foundational LLD & SOLID Principles
2The Senior Engineer Guide to LLD: SOLID Principles in Practice
3LLD Mastery: The Singleton Design Pattern
4LLD Mastery: The Factory Design Pattern
5LLD Mastery: The Strategy Design Pattern
4

LLD Case Studies

  • Parking Lot
  • Elevator
  • Tic Tac Toe
  • Splitwise
  • LRU Cache
1LLD Masterclass: Designing a Multi-Level Parking Lot
2Case Study: Design an Elevator System
3Case Study: Design Tic Tac Toe
5

Phase 3: Unified Thinking

  • HLD to LLD Translation
  • API to Class Mapping
  • Real-world Walkthroughs
1How HLD Translates to LLD