Introduction to low level design | OOPs | SOLID principles | Complete LLD playlist
🚀 LLD 01 - Introduction to Low-Level Design, OOPs, and SOLID Principles
Welcome to the first video of our Low-Level Design (LLD) series! In this video, we dive deep into the essentials of software design that every developer needs to build scalable and maintainable systems.
What you will learn in this video:
What is Object-Oriented Programming (OOP)? Beyond just definitions, we explore it as a methodology for solving real-world problems [03:07].
Class vs. Object: Understand the difference between blueprints and runtime entities, and why memory management matters [06:42].
Deep Dive into Abstraction: Learn why abstraction is a "relative term" and how it helps hide complexity in real systems, like Payment Processors [14:08].
Real-world Examples: We skip the "Cat and Dog" examples and look at actual system components like PaymentValidator and PaymentRequest [02:11].
Live Coding Exercise: Watch a step-by-step implementation of these concepts in Java to see how design principles look in code [26:14].
Why learn LLD? Most code "works," but great code is readable, maintainable, and extensible. Whether you are preparing for system design interviews or looking to improve your day-to-day coding standards, this series will give you the tools you need to excel.
0:00 Introduction to LLD Essentials
3:07 What is Object Orientation?
6:42 Class vs. Object
11:03 The 4 Pillars of OOPs
14:08 Deep Dive into Abstraction
26:14 Live Coding Exercise & Implementation
35:00 Summary & Next Steps
Github Link - https://github.com/tenxbackend/low-le...
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