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System Design Demystified

This course has everything you need to transform from wherever you are today into an interview-ready expert who can confidently ace system design interviews. It's a self-contained, no-fluff program designed specifically for interview success, with flexible entry points for beginners, intermediate, and advanced engineers to jump in at their appropriate level and progress at their own pace.

The course is structured around multiple strategic phases that build systematically on each other. The Foundational Phase establishes frameworks and core components like load balancers, databases, and microservices. The Learning Phase dives deep into actual interview questions across companies with detailed walkthroughs and trade-off analysis to build your knowledge arsenal. Finally, the Interview Training Phase lets you practice applying everything under time pressure to simulate real interview conditions.

Your learning path is completely customizable based on your current skill level. Beginners start with fundamentals, while intermediate and advanced engineers can jump straight to the Learning Phase and backfill gaps as needed. This platform also offers adaptive mock interviews that start with coached sessions to ease you in, then progress to realistic company-specific simulations with detailed readiness assessments and actionable feedback.

The ultimate goal is simple: walk into your real interviews with unshakeable confidence and earn strong-hire decisions. Every element of this course is designed to bridge the gap between where you are now and where you need to be to succeed at the companies you're targeting.

Table of Contents

  • Foundational Phase
    • Framework for Acing System Design Interviews
    • Foundational System Design Concepts
  • Learning Phase
    • Learning Phase Challenges

Foundational Phase module

Framework for Acing System Design Interviews

How to Ace your System Design Interview | A Six-step Framework
straightforwardtutorial
Time Limit: 240 minutes
Intro to Requirements Gathering
straightforwardtutorial
Time Limit: 180 minutes
How to Gather Functional Requirements
straightforwardtutorial
Time Limit: 180 minutes
Non-Functional Requirements
straightforwardtutorial
Time Limit: 180 minutes
Requirements Gathering Walkthrough: Design a Contest Voting System & Leaderboard
straightforwardtutorial
Time Limit: 180 minutes
Requirements Gathering Walkthrough: Design a Highly Scalable Rate Limiter
straightforwardtutorial
Time Limit: 180 minutes
Requirements Gathering Walkthrough: Design a Dating application (Tinder, Hinge etc)
straightforwardtutorial
Time Limit: 180 minutes
Best Practices: Crafting your High-level Design
straightforwardtutorial
Time Limit: 180 minutes
Best Practices: Deep Dives
straightforwardtutorial
Time Limit: 180 minutes

Foundational System Design Concepts

Introduction to Load Balancers
straightforwardtutorial
Time Limit: 180 minutes
Types of Load Balancers
straightforwardtutorial
Time Limit: 180 minutes
Load Balancing Algorithms
straightforwardtutorial
Time Limit: 180 minutes
Design the Request Routing Infrastructure for Services with a Global Customer Base
straightforwardsystem_design
Time Limit: 180 minutes
Introduction to In-memory Data Stores
straightforwardtutorial
Time Limit: 180 minutes
Overcoming Stale Reads from Distributed Cache
moderately_challengingknowledge
Time Limit: 5 minutes
Identifying the Versatile Component
straightforwardknowledge
Time Limit: 4 minutes
Introduction to Database Selection in System Design Interviews
straightforwardtutorial
Time Limit: 180 minutes
Selecting a database optimised for write operations
moderately_challengingknowledge
Time Limit: 3 minutes
Selecting a database optimised for read operations
moderately_challengingknowledge
Time Limit: 3 minutes
Delivering Real-Time Updates I
moderately_challengingknowledge
Time Limit: 4 minutes
Request Routing (DNS, Load Balancer, Reverse Proxy, API Gateway, Rate limiting, CDN)
straightforwardtutorial
Time Limit: 180 minutes
Restful APIs (including JWT, cookies & sessions)
straightforwardtutorial
Time Limit: 180 minutes
Intro to Microservices Architecture
straightforwardtutorial
Time Limit: 180 minutes
Scaling Services I
straightforwardtutorial
Time Limit: 180 minutes
In-memory Data Stores I (Redis, Memcached)
straightforwardtutorial
Time Limit: 180 minutes
In-memory Data Stores II (Caching Strategies)
straightforwardtutorial
Time Limit: 180 minutes
Persistent Data Stores (SQL, NoSQL)
straightforwardtutorial
Time Limit: 180 minutes
Persistent Data Stores at Scale (Partitioning, Sharding, Replication)
straightforwardtutorial
Time Limit: 180 minutes
Datastore Selection
straightforwardtutorial
Time Limit: 180 minutes
Queues I (Kafka, RabbitMQ, Amazon SQS, Dead Letter Queues, Message Brokers, Pub/Sub, Workers)
straightforwardtutorial
Time Limit: 180 minutes
Queues II (Kafka, RabbitMQ, Amazon SQS, Dead Letter Queues, Message Brokers, Pub/Sub, Workers)
straightforwardtutorial
Time Limit: 180 minutes
Scaling Services II
straightforwardtutorial
Time Limit: 180 minutes

Learning Phase module

Learning Phase Challenges

Design a Ride-Matching Service
moderately_challengingsystem_design
Time Limit: 60 minutes
Design Contest Voting Infra
moderately_challengingtutorial
Time Limit: 240 minutes
Design a System for Deploying Artifacts Scalably
moderately_challengingknowledge
Time Limit: 360 minutes
Design Tinder
moderately_challengingtutorial
Time Limit: 180 minutes
Design Facebook News Feed
moderately_challengingtutorial
Time Limit: 180 minutes
Design Spotify
moderately_challengingtutorial
Time Limit: 180 minutes
Design Dropbox
moderately_challengingtutorial
Time Limit: 180 minutes

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AI-Powered Mock Interviews

Want to practice real interview questions, under more realistic conditions than leetcode problems? Then try past interview questions in the presence of an AI interviewer to see how ready you are.