System Design was HARD until I Learned these 30 Concepts

To advance from a junior developer to a senior engineer or secure a high-paying job at a big tech company, mastering system design is crucial. Understanding core concepts like client-server architecture, DNS, HTTP, APIs (REST and GraphQL), databases (SQL and NoSQL), and scaling techniques (vertical and horizontal scaling, caching, and load balancing) are fundamental. The post outlines these critical concepts and offers real-world examples to help in designing scalable, reliable systems.