HLD + LLD
System Design · HLD & LLD

Become a solid backend engineer. Crack the design round.

A complete System Design course for engineers who want structured prep — animated lessons, real case studies, trade-offs, and Java pseudocode.

1

Master HLD & LLD through animated lessons, design patterns, and real case studies.

2

Beyond theory: Java pseudocode, visual diagrams, quizzes, and real interview questions.

3

Join engineers leveling up — with fresh, high-quality content added regularly.

// what's inside

Everything you need to design at scale.

50+ chapters, 30+ named case studies, animated videos, and real interview prep — all in one place.

Q&As
Interview prep
Real-world questions and architecture diagrams for senior backend roles.
50+
Chapters
Databases, caching, networking, load balancing, CDN, consistency, and LLD.
240+
Minutes of animated video
CAP Theorem, Consistent Hashing, ACID vs BASE, Sharding — visualized.
the highlight!
30+
Real-world case studies
Design Instagram, Uber, Tinder, TinyURL — with trade-offs and Java pseudocode.
Smart
Timed quizzes
Reinforce skills under time pressure — just like a real interview.
∞
Lifetime access
One-time payment. Unlimited access to all current and future content.
topics covered

Everything from theory to trade-offs

Scalability Load Balancing Caching Database Design CAP & PACELC Sharding CDN & DNS Consistent Hashing REST · GraphQL · gRPC SOLID + Design Patterns Rate Limiting API Gateway
// the path

Your roadmap to staff-level system design.

8 stages from fundamentals to LLD — included with lifetime access.

Stage 01

System Design Fundamentals

  • Common terms & concepts
  • Back-of-envelope estimations
  • Capacity planning
  • Functional vs non-functional reqs
  • Interview framework
Stage 02

Scalability & Load Balancing

  • Vertical vs horizontal scaling
  • Load balancing algorithms
  • Types of load balancers
  • High availability
  • Fault tolerance
  • Forward vs reverse proxy
Stage 03

Database Design & Partitioning

  • SQL vs NoSQL
  • ACID operations
  • Database indexing
  • Replication strategies
  • Database sharding
  • Consistent hashing
  • CAP & PACELC theorem
Stage 04

Caching & CDN

  • Caching strategies
  • Cache invalidation
  • Redis & Memcached
  • Content delivery networks
  • Edge computing
Stage 05

Networking & API Design

  • DNS & how it works
  • HTTP/HTTPS & TCP/UDP
  • REST vs GraphQL vs gRPC
  • Rate limiting
  • API gateway patterns
where the magic happens ✨ Stage 06

HLD Case Studies

  • URL Shortener (TinyURL)
  • Ride-Sharing (Uber/Ola)
  • Photo Sharing (Instagram)
  • Video Streaming (YouTube)
  • Chat System (WhatsApp)
  • Dating Platform (Tinder)
  • Rate Limiter
  • Distributed Cache
Stage 07

Low-Level Design (LLD)

  • SOLID principles
  • Singleton & Factory
  • Builder & Adapter
  • Decorator & Facade
  • Composite & Flyweight
  • Observer & Strategy
you made it! Final

System Design Expert

  • 50+ chapters completed
  • 240+ minutes of video
  • 30+ case studies mastered
  • Trade-offs understood
  • Ready to ace interviews

Join engineers already designing at scale.

What's inside?

Comprehensive Interview Prep

Q&As, real-world case studies, and architecture diagrams, tailored for product-based company interviews and senior backend roles.

Master System Design from Basics to Advanced

50+ chapters covering databases, caching, networking, load balancing, CDN, DNS, consistency models, and LLD concepts.

Engaging, High-Quality Animated Video Lessons

240+ minutes of engaging English videos explaining CAP Theorem, Consistent Hashing, ACID vs BASE, Sharding, and Design Patterns.

Real World Case Studies

Hands-on designs of Instagram, Uber, Tinder, TinyURL, and other scalable systems — including trade-offs, Java pseudocode, and performance insights.

Smart Quizzes

Test your knowledge with timed quizzes to reinforce skills and boost interview confidence.

Lifetime Access

One-time payment gives unlimited access to all current and future content

Sneak Peek and Overview

Write your awesome label here.

Ready to Follow This Roadmap?

All topics below are included in this course — Start learning today with lifetime access!
Write your awesome label here.
Write your awesome label here.
Real-World Practice

Master System Design with 53 Case Studies

From detailed deep-dives to flaw-finding challenges, hands-on DIY exercises, quick revision guides and LLD case studies — everything you need to ace system design interviews

11 Case Studies

System Design (HLD) Case Studies

Detailed system design case studies with diagrams, code, trade-offs, API design, database design and interview takeaways — built for in-depth knowledge.

Uber/Ola TinyURL Tinder Instagram Rate Limiter Google Docs YouTube WhatsApp Web Crawler Redis/Memcached Apache Kafka
6 Challenges

System Design Quiz: Find the Flaw

Test your system design skills by identifying architectural flaws in real-world systems. Each challenge presents a flawed design from domains like e-commerce, fintech, and streaming — analyze the architecture, find the problems, then reveal expert solutions with improved designs.

URL Shortener E-commerce Checkout Real-time Collaborative Editor Stock Trading Platform Food Delivery Platform Video Streaming Platform
7 DIY Problems

Design It Yourself (DIY) in Excalidraw

Hands-on HLD problems with Excalidraw templates — requirements, hints, and component library included. Design your architecture first, then compare with our reference solution and interview talking points. Perfect for understanding system design basics.

Notification System Search Autocomplete Meeting Scheduler Ticket Booking E-commerce Cart Food Delivery File Storage
19 Quick Revisions

Crisp HLD Case Studies for Interview Revision

Quick, one-pager system design case studies with diagrams, code, and interview takeaways — built for last-minute prep. Each answers "How does X work?" questions interviewers love to ask.

YouTube Streaming WhatsApp Delivery Twitter Trending Uber Matching Instagram Feed Amazon Payments Netflix Buffering Google Docs Collab Spotify Recommendations LinkedIn PYMK Zoom Video Paytm/GPay GitHub Scale Flipkart Sales CDN/Cloudflare Airbnb Booking Slack/Discord BookMyShow Facebook Feed
10 Case Studies

Low-Level Design (LLD) Case Studies

Learn object-oriented design through 10 real-world case studies covering parking lots to stock exchanges, with interactive visualizations and production-ready code patterns.

Parking Lot System Library Management Vending Machine Tic-Tac-Toe Movie Ticket Booking Elevator System Food Delivery System Ride Sharing System Stock Exchange Social Media Feed
Total Case Studies Included
11
Detailed HLD
6
Find the Flaw
7
DIY Exercises
19
Crisp Revisions
10
LLD Case Studies
53
Total Problems
real-world practice
// the case study library

Master system design with 53 case studies.

Detailed deep-dives, flaw-finding challenges, hands-on DIY exercises, quick revision guides, and LLD case studies — five different ways to learn the same material.

the main course
11 case studies

Detailed HLD case studies

Deep-dive system designs with diagrams, code, trade-offs, API design, and database design — built for engineers who want to understand the why, not just the what.

Uber / Ola TinyURL Tinder Instagram Rate Limiter Google Docs YouTube WhatsApp Web Crawler Redis / Memcached Apache Kafka
6 challenges

Find the Flaw

Test your skills by identifying architectural flaws in real-world designs. Each challenge presents a flawed system — analyze it, find the problems, then reveal expert solutions with improved designs.

URL Shortener E-commerce Checkout Real-time Editor Stock Trading Food Delivery Video Streaming
you draw it!
7 DIY problems

Design It Yourself (in Excalidraw)

Hands-on HLD problems with Excalidraw templates, requirements, hints, and a component library. Design your architecture first, then compare with our reference solution and interview talking points.

Notification System Search Autocomplete Meeting Scheduler Ticket Booking E-commerce Cart Food Delivery File Storage
last-minute hack!
19 quick revisions

Crisp HLD revisions

Quick, one-pager case studies with diagrams, code, and interview takeaways — built for last-minute prep. Each answers the "How does X work?" questions interviewers love to ask.

YouTube Streaming WhatsApp Delivery Twitter Trending Uber Matching Instagram Feed Amazon Payments Netflix Buffering Google Docs Collab Spotify Recommendations LinkedIn PYMK Zoom Video Paytm / GPay GitHub Scale Flipkart Sales CDN / Cloudflare Airbnb Booking Slack / Discord BookMyShow Facebook Feed
10 case studies

Low-Level Design (LLD)

Object-oriented design through 10 real-world case studies — from parking lots to stock exchanges — with interactive visualizations and production-ready code patterns.

Parking Lot Library Management Vending Machine Tic-Tac-Toe Movie Booking Elevator System Food Delivery Ride Sharing Stock Exchange Social Media Feed
total problems included

Five formats. One complete case study library.

11
Detailed
HLD
6
Find the
flaw
7
DIY
exercises
19
Crisp
revisions
10
LLD
case studies
53
Total
problems

Take Your Learning to the Next Level

Lifetime Access Plan
₹ 1,999
₹1,499
One-time payment • No subscriptions
  • Lifetime Access
  • Course Certificate
  • Unlimited Updates
  • Regularly Updated Content
Join the Course Now
Secure Payment via Instamojo • 100% Safe & Encrypted

Outside India? Pay via PayPal

Pay with PayPal
no subscriptions
// ready when you are

Take it to the next level.

one-time payment · pay once, learn forever
best value!
Lifetime Access
₹1,999
₹1,499
one-time payment
  • Lifetime access to all lessons
  • Course completion certificate
  • Free updates — forever
  • All future modules included
  • Source code & project files
Join the Course Now
Secure payment via Instamojo · 100% encrypted
outside India?
Pay with PayPal
backed by thousands of engineers learning with us

Take your learning and interview prep to the next level

✅ Secure Payment - Your Information is Safe
All transactions are encrypted and processed securely through Instamojo (🔒 100% Safe & Secure Checkout)
If you are outside India, please use below PayPal Link.

💬 Below are some of the testimonials from my Instagram DMs and course reviews

Real Success Stories

Engineers Who Cracked It

See how our System Design course helped engineers crack HLD/LLD rounds at top companies and land senior roles.

Names hidden to protect user privacy.

Amazon / Persistent
Lead Engineer

Cracked Lead role at Persistent. System Design really helped me crack the Amazon client round.

Big Four + 3 MNCs ↑ 160% Hike
Multiple Offers

Got 160% hike and 3 more offers from MNCs. System Design course made HLD rounds a breeze.

Product-Based ↑ 100% Hike
4 Offer Letters

Received four offer letters! System Design course helped me articulate distributed systems concepts clearly.

Senior Role
HLD Round Cleared

The case studies on Netflix, Uber, and WhatsApp were exactly what I needed for my HLD interviews.

Offer Received ↑ 45% Hike
Both Courses Helped

System Design + Java combo is lethal. Got 45% hike. Both courses are amazing!

Product Company
After 7 Years

After 7 years at same company, finally switched! Enrolled in System Design course for senior roles.

Tech Architect
Design Round

The way you explain scalability, load balancing, and caching made complex concepts click instantly.

Course Review
Best System Design

Finally a System Design course that covers real-world case studies, not just theory. Worth every rupee!

Senior Engineer
Multiple Clears

Cleared 3 system design rounds back to back. The structured approach in the course is gold.

LLD Preparation
Design Patterns

LLD section with design patterns and SOLID principles helped me crack machine coding rounds.

Staff Engineer
Architecture Round

Database sharding, message queues, microservices — all explained with real examples. Cracked Staff role!

Course Review
Practical Approach

Unlike other courses, this one teaches you HOW to think about system design, not just what to memorize.

Big Tech
Senior SDE

The 37+ case studies covered every possible question I was asked in my interviews. Highly recommended!

Amazon / Persistent
Lead Engineer

Cracked Lead role at Persistent. System Design really helped me crack the Amazon client round.

Big Four + 3 MNCs ↑ 160% Hike
Multiple Offers

Got 160% hike and 3 more offers from MNCs. System Design course made HLD rounds a breeze.

Product-Based ↑ 100% Hike
4 Offer Letters

Received four offer letters! System Design course helped me articulate distributed systems concepts clearly.

Senior Role
HLD Round Cleared

The case studies on Netflix, Uber, and WhatsApp were exactly what I needed for my HLD interviews.

Offer Received ↑ 45% Hike
Both Courses Helped

System Design + Java combo is lethal. Got 45% hike. Both courses are amazing!

Product Company
After 7 Years

After 7 years at same company, finally switched! Enrolled in System Design course for senior roles.

Tech Architect
Design Round

The way you explain scalability, load balancing, and caching made complex concepts click instantly.

Course Review
Best System Design

Finally a System Design course that covers real-world case studies, not just theory. Worth every rupee!

Senior Engineer
Multiple Clears

Cleared 3 system design rounds back to back. The structured approach in the course is gold.

LLD Preparation
Design Patterns

LLD section with design patterns and SOLID principles helped me crack machine coding rounds.

Staff Engineer
Architecture Round

Database sharding, message queues, microservices — all explained with real examples. Cracked Staff role!

Course Review
Practical Approach

Unlike other courses, this one teaches you HOW to think about system design, not just what to memorize.

Big Tech
Senior SDE

The 37+ case studies covered every possible question I was asked in my interviews. Highly recommended!

HLD + LLD wins
// real success stories

Engineers who cracked design rounds.

How the System Design course helped engineers crack HLD & LLD rounds at top companies — and land senior roles.

names hidden to protect privacy
Amazon / Persistent
Lead Engineer

Cracked the Lead role at Persistent. System Design really helped me crack the Amazon client round.

Big Four + 3 MNCs ↑160%
Multiple offers

Got a 160% hike and 3 more offers from MNCs. The System Design course made HLD rounds a breeze.

Product-Based ↑100%
4 offer letters

Received four offer letters. The course helped me articulate distributed systems concepts clearly.

Senior Role
HLD round cleared

The case studies on Netflix, Uber, and WhatsApp were exactly what I needed for my HLD interviews.

Offer Received ↑45%
Both courses helped

System Design + Java combo is lethal. Got a 45% hike. Both courses are amazing!

Product Company
After 7 years

After 7 years at the same company, finally switched. Enrolled in System Design for the senior role.

Tech Architect
Design round

The way you explain scalability, load balancing, and caching made complex concepts click instantly.

Course Review
Best system design

Finally a System Design course that covers real-world case studies, not just theory. Worth every rupee.

Senior Engineer
Multiple clears

Cleared 3 system design rounds back to back. The structured approach in the course is gold.

LLD Preparation
Design patterns

The LLD section with design patterns and SOLID principles helped me crack machine coding rounds.

Staff Engineer
Architecture round

Database sharding, message queues, microservices — all explained with real examples. Cracked Staff role!

Course Review
Practical approach

Unlike other courses, this one teaches you HOW to think about system design — not just what to memorize.

Big Tech
Senior SDE

The 53+ case studies covered every possible question I was asked in my interviews. Highly recommended.

Amazon / Persistent
Lead Engineer

Cracked the Lead role at Persistent. System Design really helped me crack the Amazon client round.

Big Four + 3 MNCs ↑160%
Multiple offers

Got a 160% hike and 3 more offers from MNCs. The System Design course made HLD rounds a breeze.

Product-Based ↑100%
4 offer letters

Received four offer letters. The course helped me articulate distributed systems concepts clearly.

Senior Role
HLD round cleared

The case studies on Netflix, Uber, and WhatsApp were exactly what I needed for my HLD interviews.

Offer Received ↑45%
Both courses helped

System Design + Java combo is lethal. Got a 45% hike. Both courses are amazing!

Product Company
After 7 years

After 7 years at the same company, finally switched. Enrolled in System Design for the senior role.

Tech Architect
Design round

The way you explain scalability, load balancing, and caching made complex concepts click instantly.

Course Review
Best system design

Finally a System Design course that covers real-world case studies, not just theory. Worth every rupee.

Senior Engineer
Multiple clears

Cleared 3 system design rounds back to back. The structured approach in the course is gold.

LLD Preparation
Design patterns

The LLD section with design patterns and SOLID principles helped me crack machine coding rounds.

Staff Engineer
Architecture round

Database sharding, message queues, microservices — all explained with real examples. Cracked Staff role!

Course Review
Practical approach

Unlike other courses, this one teaches you HOW to think about system design — not just what to memorize.

Big Tech
Senior SDE

The 53+ case studies covered every possible question I was asked in my interviews. Highly recommended.

Write your awesome label here.
Write your awesome label here.
Write your awesome label here.
Write your awesome label here.
Write your awesome label here.

Course contents
(Click on any chapter below to open the Course Player)

Lifetime access 
video Tutorials
Real case studies
timer based QUIZZES
Self-Paced Learning
✅ Secure Payment - Your Information is Safe!
All transactions are encrypted and processed securely through Instamojo (🔒 100% Safe & Secure Checkout)
If you are outside India, please use below PayPal Link.
no subscriptions
// ready when you are

Take it to the next level.

one-time payment · pay once, learn forever
best value!
Lifetime Access
₹1,999
₹1,499
one-time payment
  • Lifetime access to all lessons
  • Course completion certificate
  • Free updates — forever
  • All future modules included
  • Source code & project files
Join the Course Now
Secure payment via Instamojo · 100% encrypted
outside India?
Pay with PayPal
backed by thousands of engineers learning with us
FAQs

Frequently Asked Questions

This course is ideal for backend engineers, system architects, and developers learning System Design or preparing for system design interviews.

Whether you're just beginning your journey or looking to strengthen your architecture skills, this course covers real-world systems, trade-offs, and design strategies.

The course is regularly updated with new videos, examples, and interview-focused tips.

You can expect fresh content and improvements every week to stay aligned with the latest industry trends and interview patterns.

Yes! All videos in the course are delivered in clear, easy-to-understand English, making them accessible to a global audience.

Yes! You'll receive a Certificate of Completion once you finish all the chapters, quizzes, and videos in the course.

It's a great way to showcase your learning and commitment on your resume or LinkedIn profile.

Absolutely! The entire course is mobile-friendly and works seamlessly across desktops, tablets, and smartphones—so you can learn anytime, anywhere.

Pro tip: We recommend using a laptop or desktop whenever possible for a better viewing experience and to avoid eye strain during longer learning sessions.

Your feedback helps us grow!

You can submit your thoughts and suggestions directly through the Feedback & Suggestions section in the last chapter of the course. We truly value your input.

Save More with Bundles

Choose Your Learning Path

Bundle courses together and save. Each bundle is designed for a specific career goal.

Interview Ready
Java + Spring Boot
+ System Design
Best for Learning & Interviews
AI Builder
Java + Spring Boot
+ AI for Spring Boot
Best for Learning & AI Skills
Best Value
Complete Backend
Java + Spring Boot
+ System Design + AI
Complete Mastery
View Pricing & Details

Lifetime access. Free updates. Certificates included.

save more!
why stop at one course?

Bundle up & save on the full path.

Combine this course with the others and save up to ₹1,500. Three bundles, one decision.

Interview Ready AI Builder Complete Backend
See all bundles lifetime access · free updates

Frequently asked questions

Who is this course for?

This course is ideal for backend engineers, system architects, and developers learning System Design or preparing for system design interviews. Whether you're just beginning your journey or looking to strengthen your architecture skills, this course covers real-world systems, trade-offs, and design strategies.

How often is the course content updated?

The course is regularly updated with new videos, examples, and interview-focused tips. You can expect fresh content and improvements every week to stay aligned with the latest industry trends and interview patterns.

Are the videos in English?

Yes, all videos in the course are delivered in clear, easy-to-understand English, making them accessible to a global audience.

Is a Certificate of Completion provided?

Yes! You’ll receive a Certificate of Completion once you finish all the chapters, quizzes, and videos in the course. It’s a great way to showcase your learning and commitment.

Can I access the course on mobile devices?

Absolutely. The entire course is mobile-friendly and works seamlessly across desktops, tablets, and smartphones—so you can learn anytime, anywhere.
That said, we recommend using a laptop or desktop whenever possible for a better viewing experience and to avoid eye strain during longer learning sessions.

How can I give feedback or share suggestions?

Your feedback helps us grow! You can submit your thoughts and suggestions directly through the Feedback & Suggestions section in the last chapter of the course. We truly value your input.


Created with