Low-Level Design Track
The LLD track will progress from OOP and SOLID to concurrency-aware machine-coding problems using language-neutral pseudocode. Its roadmap is open while lessons are authored.
0 of 20 track lessons available
The foundational object-oriented mechanics, SOLID design principles in production, Gang of Four design patterns, Java Memory Model concurrency theory, UML modeling, and Domain-Driven Design primitives.
Production-grade implementations of classic machine coding interview problems: Parking Lot, Elevator Control, In-Memory LRU/LFU Cache, Rate Limiter Library, Chess, Notification Service, and Splitwise.
The LLD interview playbook will be published after the theory foundation and the first machine-coding examples, so every stage can point to a complete worked design.