Modern websites are expected to load instantly, regardless of whether users are accessing them from New York, Beijing, London, or Tokyo. This demand for speed is one of the reasons why Content Delivery Networks (CDNs) have become a core part of internet infrastructure. However, understanding how CDNs actually work can be difficult without seeing traffic routing, caching behavior, and latency optimization in action. That is where a CDN simulator becomes valuable. Designing a Content Delivery Network (CDN) simulator is an excellent project for software engineers, networking students, backend developers, and distributed systems enthusiasts. It combines networking concepts, caching algorithms, load balancing, geographic routing, and performance optimization into a single practical application. More importantly, building a simulator allows developers to experiment with CDN strategies without deploying expensive global infrastructure.…