System Design
System DesignHow to Approach a Low-Level Design (LLD) Interview: The Framework
A repeatable framework for LLD and machine-coding rounds: clarify requirements, find the objects, define relationships (has-a vs is-a), apply design patterns where they fit, sketch the class diagram, then write clean SOLID code. With a worked parking-lot example in Java.
System DesignHow to Approach Any System Design Interview (The 6-Step Framework)
A repeatable 6-step framework for system design interviews: clarify requirements, estimate scale, define the API, model the data, draw the high-level design, then deep-dive into bottlenecks and failures. Works for any question, from URL shortener to designing Uber.
System DesignScaling from Zero to Millions of Users: A Beginner’s Guide
How real systems scale from one server to millions of users, explained step by step for beginners: load balancers, caching, CDNs, database replication and sharding, message queues and microservices — each added only when the previous setup breaks.
System DesignSystem Design: The Complete Guide (HLD, LLD & Interview Prep)
Learn system design from scratch to senior level — the complete free guide covering fundamentals, high-level design (HLD), low-level design (LLD), design patterns, and real interview case studies. Beginner-friendly explanations with senior-grade depth.