Topic
Lld
Learn Lld as a connected topic across chapters, concepts, simulations, and interview reasoning.
10 Concepts8 Articles3h 3m
Overview
Learn Lld as a connected topic across chapters, concepts, simulations, and interview reasoning.
How this topic helps
Design Patterns
Java
Low Level Design
Object Oriented Design
Learning Path in this Topic
Series that contain articles from Lld. Select a path to filter the article list.
Articles
8 matched articles
Article 1LLD for Parking Lot System: Designing a Smart GarageTLDR
TLDR: A Parking Lot is the "Hello World" of Low-Level Design. It teaches Encapsulation (ParkingFloor hides its Min-Heap), Abstraction (PricingStrategy interface), Inheritance (BikeSpot/CompactSp19 minArticle 2LLD for URL Shortener: Designing TinyURLTLDR
TLDR: A URL Shortener maps long URLs to short IDs. The core challenge is generating a globally unique, short, collision-free ID at scale. We use Base62 encoding on auto-incrementing database IDs22 minArticle 3LLD for Movie Booking System: Designing BookMyShowTLDR
TLDR: A Movie Booking System (like BookMyShow) is an inventory management problem with an expiry: seats expire when the show starts. The core engineering challenge is preventing double-booking u25 minArticle 4LLD for LRU Cache: Designing a High-Performance CacheTLDR
TLDR: An LRU (Least Recently Used) Cache evicts the item that hasn't been accessed the longest when it's full. The classic implementation combines a HashMap (O(1) lookup) with a Doubly Linked Li25 min
Article 5LLD for Elevator System: Designing a Smart LiftTLDR
TLDR: An elevator system is a textbook OOP design exercise: ElevatorCar encapsulates its stop queue, ElevatorState polymorphically handles direction changes (State Pattern), and DispatchStrategy22 minArticle 6Implement LLD for Parking Lot: Code WalkthroughTLDR: This is the code companion to the Parking Lot System Design post. We implement the core classes (ParkingLot, ParkingSpot, Ticket) in Java, apply the Singleton, Factory, and Strategy patterns, an29 minPage 1 of 2