System Design One Shot

System Design is not about memorizing fancy terms. It is about learning how to think while building applications that can handle millions of users. In this complete single shot System Design course, we start from the very basics and gradually move towards advanced distributed systems concepts used in real-world applications like Instagram, YouTube, WhatsApp, Netflix, Banking Applications, and more. This course is designed for: • Beginners starting with System Design • Developers preparing for interviews • Backend Engineers • Students curious about how large-scale applications work internally Topics Covered in this Course: What is System Design? • Understanding the mindset behind designing applications • Alien Bank example • Components, tasks, and trade-offs in real systems Core Components of System Design • Client Applications • Backend Servers • Databases • Load Balancers • Message Queues • Monitoring and Logs Data Intensive vs Compute Intensive Applications • What makes an application data-intensive • What makes an application compute-intensive • Instagram architecture discussion • Machine Learning and Rendering workloads • CPU-bound and GPU-bound systems • Real-world scalability concerns Functional vs Non-Functional Requirements • Functional Requirements • Scalability • Availability • Reliability • Performance • Security • Maintainability • Observability DNS (Domain Name System) • How websites actually work • Root Server • TLD • Name Server • DNS Resolution process explained step-by-step APIs and Communication • What is an API • REST APIs • SOAP APIs • GraphQL • gRPC • WebSockets • When and why to use each one REST API Deep Dive • HTTP Methods • GET, POST, PUT, PATCH, DELETE • Endpoints • JSON • Query Parameters • Request and Response Body • Status Codes • API Design Best Practices SQL Databases • Relational Databases • Tables, Rows, Columns • Constraints • Primary Key and Foreign Key • Joins and Relationships • One-to-One • One-to-Many • Many-to-Many