CODEWITHCHAI LEARNING TRACK
System Design Tutorials
Step-by-step lessons with practical explanations and code examples.
01System Design Lesson 5: Caching and CDNs Without Stale-Data SurprisesLearn where caches and CDNs belong, design cache keys and TTLs, prevent stampedes, handle invalidation, and validate fresh data paths in production.02System Design Lesson 4: Data Modeling, SQL, NoSQL, and Storage ChoicesLearn to turn access patterns into data models, select SQL or NoSQL storage deliberately, preserve invariants, and validate production data paths.03System Design Networking Tutorial: DNS, HTTP, TLS, APIs, Proxies, and Load BalancersLesson 3: trace a request from DNS lookup to API response, then design reverse proxies and load balancers with clear operational boundaries.04System Design Requirements and Estimation: Turn Ideas Into ArchitectureDefine requirements, SLOs, and traffic, storage, and bandwidth estimates before choosing components for a practical, resilient system design.05System Design for Beginners: What It Is, Why It Matters, and the Complete RoadmapStart from zero with system design: a practical design process, core trade-offs, essential concepts, and a roadmap to advanced distributed systems.