LLD & Concurrency Interview Guide
35 questions · Master Object-Oriented Design and Multithreading
📱 Mobile: tap ☰ Questions above |
Desktop: use sidebar or ↑↓ keys
📦 Core Components
Identification of the key classes and their responsibilities in a scalable application.
📋 Requirements
Functional and non-functional requirements to set the scope of the design.
⚡ Design Decisions
Design patterns, algorithmic optimizations, and thread-safety tradeoffs.
Steps for Answering LLD Questions
1. Clarify Requirements: Define scope, core features, and constraints.
2. Identify Core Components: Determine primary entities and their relations.
3. Design the Interactions: Map out the flow of data between classes.
4. Define Classes & Methods: Write out the APIs, attributes, and signatures.
5. Consider Edge Cases: Concurrency, failures, boundary limits.
6. Review and Refine: Optimize data structures and apply design patterns.