Low-Level Design (LLD) Problems

This book is designed for software engineers aiming to crack senior and staff-level interviews by strengthening their Low-Level Design skills. It presents 100 carefully selected real-world problems such as parking systems, rate limiters, and messaging platforms. Each problem is broken down into clear requirements, object-oriented design, class diagrams, and scalable solutions. The focus is on writing clean, maintainable, and extensible code using solid design principles like SOLID and design patterns. It also helps readers think like an architect by emphasizing trade-offs, edge cases, and real-world constraints. This makes it especially valuable for engineers transitioning from mid-level to senior roles.