...The repository combines theoretical explanations with hands-on implementation, allowing developers to understand both the concepts and practical challenges of CDN design. It starts with a simple backend service and progressively evolves into a distributed, multi-node system capable of handling caching, routing, and traffic distribution. The project uses technologies such as Nginx, Lua, Docker, Prometheus, and Grafana to simulate realistic CDN environments and monitoring systems. It also explores performance considerations, including latency simulation, load balancing, and scalability. By integrating observability tools, it enables users to analyze system behavior and performance metrics.