Choose your timeline and follow a structured curriculum. Each module links directly to comprehensive lessons and practice problems.
A high-intensity crash course focused on the most frequently asked LLD concepts and problems. Perfect for last-minute prep.
All 15 days are visible. Subscribe to save completion progress on this device.
Rapidly cover OOP, SOLID, and the most critical Design Patterns.
Master the core pillars of Object-Oriented Programming: Classes, Objects, Encapsulation, and Polymorphism.
Understand class relationships and when to use inheritance vs composition.
The bread and butter of LLD. Master all five SOLID principles.
Learn how to create objects flexibly using proven patterns.
Compose objects to form larger structures with new functionality.
Master patterns for object communication and algorithms.
Complete your pattern knowledge with state and template patterns.
Solve the most commonly asked LLD interview questions.
The classic LLD interview problem. Master requirements gathering and class design.
Design a game with focus on game loops and state management.
Design BookMyShow-like system with seat selection and booking.
Design a cache with LRU eviction policy - a system design favorite.
Build a rate limiter using Token Bucket or Sliding Window.
Design an elevator system with state machines and scheduling.
Simulate a 45-minute interview with time-boxed problem solving.
Consolidate learning, revisit weak areas, and prepare mentally.
Ready to start your journey?
Begin with day 1 and track your progress