System Design Practice: Building a URL Shortener

Designing large-scale systems can feel overwhelming, but mastering the fundamentals starts with a classic, real-world problem. Through this text-based course, you will learn how to design a fully functional, highly scalable URL shortening service while building transferable system design skills. What you'll learn: • Understand core system design concepts, from requirements gathering to API design. • Design a unique ID generation strategy using hashing algorithms and base encoding. • Implement efficient data storage strategies using relational and NoSQL databases. • Apply caching mechanisms to optimize redirection speed and reduce database load. • Configure rate limiting and security measures to protect your system from abuse. • Plan for high availability and horizontal scaling using modern architectural patterns. You will start with foundational definitions, essential terminology, and basic concepts before walking through the step-by-step architectural decisions required to design a production-ready system. This course is perfect for beginners, self-taught developers, and aspiring software engineers preparing for system design interviews, with no advanced prerequisites required. Start reading today to build your system design confidence.