Architect to LeadHLD & LLD
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
- YouTube
- Payment System
- Uber
- TinyURL
1Case Study: Design a URL Shortener (Bitly)
2System Design: Designing WhatsApp (Real-time Messaging)
3Case Study: Design YouTube
4Project Case Study: Designing YouTube (Video Streaming at Global Scale)
5Case Study: Design Ride Sharing (Uber)
6Case Study: Design Uber (Ride-Hailing)
7Case Study: Design a Payment System
8Case Study: Design a Payment System (Stripe/UPI)
3
Phase 2: Low-Level Design
- SOLID Principles
- OOP Deep Dive
- Design Patterns
- Clean Code
- UML
4
LLD Case Studies
- Parking Lot
- Elevator
- Tic Tac Toe
- Splitwise
- LRU Cache
5
Phase 3: Unified Thinking
- HLD to LLD Translation
- API to Class Mapping
- Real-world Walkthroughs