Object Oriented Design Interview: An Insider’s Guide (Category SystemDesign)
This book came out. 2025 As a continuation of ByteByteGo’s “Insider’s Guide” line, not about high-level system design, but about lower-level object-oriented design. (OOD, object-oriented design)Ideas are transformed into classes, interfaces, states, threads, and so on. I wonder if I'm almost ready and translation From Peter Publishing with my review on the cover of the book:)
The authors of the book are a trio: Fawaz Bokhari, Alex Xu and Desmond Zhou, in which Alex Xu is best known for the initial series "System Design Interview: An Insider's Guide". told (which is now in parsing on system-design.space). In this book, the authors decided to talk about a new type of interview, which tests the ability to build logical, extensible and supported systems, apply OOP principles and patterns, and not just write syntactically correct code. Examples where such interviews are used include Amazon, Bloomberg and Uber.
The book looks like a simulator for a candidate who gets three important things.
1The framework for solving OOD problems The book stated 4Step framework for any object-oriented design problem:
- Understand the requirements
- Identify entities and connections
- Think about interactions. Refine design and edge cases
2Set of typical tasks In the book 11 real OOD interview questions with detailed solutions: Parking Lot, Movie Ticket Booking, Unix File Search, Vending Machine, Elevator, Grocery Store, Tic-Tac-Toe, Blackjack, Shipping Locker, ATM and Restaurant Management System
3альная Visual design model In book 133 Charts that explain the architecture, workflows, and relationships between parts of the system. In general, it is the visual component of the interview that clearly shows responsibilities, boundaries, states and interactions.
The first three chapters provide a basic understanding of object-oriented interviews, how to approach them, and what basic principles to keep in mind. The following chapters already contain specific tasks that can be used in preparation. At each task, you should pause before reading the solution: sketch out classes, interfaces, sequence of calls and basic edge cases yourself. Only then is it compared to the author’s decision.
If you look at other types of interviews, object-oriented design is something in between coding interviews and system design. This is already higher in the abstraction of writing algorithms, but still about writing code inside services. In this scheme, system design is about what services are, how they communicate, where data is stored, and so on. But low-level or object-oriented design answers: what objects live inside the service, who is responsible for what, what states are possible, where invariants are, how to add new scenarios without rewriting the entire code. This book complements the classic System Design. It does not replace knowledge about distributed systems, but it helps to bring an architectural idea to a level where it can be implemented.
#SystemDesign #OOD #Architecture #Interview #Software #Engineering