Aakash Chettay

                                Why SOLID principles?  The SOLID Principles are the first and most crucial step in mastering Low-Level Design. Most design interviews begin with foundational questions related to these principles because they allow interviewers to analyze a candidate's seriousness and determination in software design. So, here's my suggestion: don't just memorize definitions. Instead, start absorbing the actual concepts. True understanding of these principles is the essence of great software. What are SOLID principles?  SOLID principles are five object-oriented design principles, that help developers write software that is easier to understand, maintain, and extend. S -  Single Responsibility Principle O -  Open / Close Principle L - Liskov Substitution Principle I - Interface Segregation Principle D - Dependency Inversion Principle 1. Single Responsibility Princ...

Why System Design? Almost every software enthusiast dreams of working in a tech giant like Amazon, Google, Microsoft, or Meta, or even at a well-established startup like Zomato or Swiggy. All of these companies have one key demand for the candidates they hire: a great understanding of System Design . (And of course, strong DSA skills are a given, but System Design is the secret sauce.) So, what is this "System Design" everyone talks about? And why do they care so much about this concept? Let's unravel this mystery together. What is System Design? At its core, System Design is the process of designing the architecture and components of a software system to meet specific business requirements.   It involves translating user requirements into a detailed blueprint that guides the entire implementation phase. Yeah, that's the bookish definition. But let's break it down into simple terms. Imagine you're a baker. You can easily bake a single cake in your kitchen. But...