Low Level Design Interview Questions 2026 | LLD Interview Questions and Answers | MindMajix – YouTube

Ace your Low Level Design (LLD) interview. This video covers Low Level Design interview questions and answers for freshers and experienced candidates. Learn about object-oriented design principles, SOLID principles, UML diagrams, class diagrams, design patterns, relationships (association, aggregation, composition) and more. We’ll cover everything from basic to advanced and scenario-based questions to help you clear LLD interview.

👉 Below are the concepts we covered in this video on Top 30 Low Level Design Interview Questions and Answers:
✅ LLD Interview Questions For Freshers:
00:00:00 Introduction
00:01:23 What is Low Level Design
00:02:17 What are the key Object Oriented Design (OOD) principles used in LLD
00:03:17 What are the differences between Low Level Design (LLD) and High Level Design (HLD)
00:04:11 What are the importance of UML diagrams in LLD
00:04:59 Explain the concept of class and object with an example
00:05:46 Design a class structure for an online bookstore
00:07:19 What is the difference between composition and inheritance in LLD
00:08:11 What is encapsulation and why is it important in LLD
00:09:14 How would you design a parking lot system
00:10:10 What are design patterns and why are they important in LLD

✅ LLD Interview Questions For 1 Year Experience:
00:11:19 What is the difference between abstract class and an interface in design
00:12:20 What is the difference between a factory pattern and builder pattern
00:13:10 Design a logging framework using singleton pattern
00:14:14 How would you design a moview ticker booking system
00:15:24 What is the observer pattern and where is it used in real world systems
00:16:04 How would you design a elevator system
00:17:39 What is the difference between the strategy ans state design patterns
00:18:23 Design a splitwise like expense sharing app
00:19:11 What is the decorator pattern and how is it useful
00:20:24 Design a food delivery system like zomato or swiggy

✅ Scenario Based LLD Interview Questions:
00:21:40 How would you design a ride sharing system like uber or ola
00:22:52 How would you handle concurrency in a system like an online ticket booking app
00:24:23 What is the difference between aggregation and composition
00:25:16 Design a notification sysytem like Email/SMS/Push
00:26:10 What are the key design considerations when designing thread safe classes
00:27:16 Design an In-memory cache like Redis or LRU cache
00:28:10 What is the difference between Monolithic and Microservice designs at LLD level
00:29:04 Design a rate limiter system like API throttling
00:29:59 Design a chat application like WhatsApp
00:30:44 Design a URL shortener

#LowLevelDesign #LowLevelDesignInterviewQuestions #LLDInterviewQuestions #LowLevelInterviewQuestionsAndAnswers #LLDInterviewQuestionsForFreshers #LLDInterviewQuestionsForExperienced #LLDDesignInterviewQuestions2026 #SystemDesign #Mindmajix

✅ About MindMajix’s Site Reliability Engineer Training:
SRE training by MindMajix introduces you to the principles and practices that allow you to economically and reliably scale essential services. This site reliability engineer course equips you with the methods, tools, and techniques to handle and engage people throughout the enterprise, including reliability and stability. As a part of this training, trainees will work on real-world projects and industry scenarios to get a practical understanding of setting and tracking the service level objectives, grasping key SRE sources, and automating responses to software site issues.

🔥 Join hands-on SRE Certification Course: https://mindmajix.com/site-reliability-engineer-training?utm_source=youtube&utm_medium=video&utm_campaign=promotion

🔑 Key Features
👉 Learn from Industry Experts.
👉 Gain Job-ready Skills.
👉 24/7 Support.
👉 Dedicated Learning Mentors.
👉 Guaranteed Job Interviews.
👉 Real-life Projects.
👉 Get Certified.

📌 Subscribe to our channel to get video updates. Click on the link to subscribe: https://www.youtube.com/channel/UCkKemMaRnFPlNLHZ0zOYfpA

source