In today's digital landscape, high traffic situations are becoming increasingly common, especially during large-scale events, promotional seasons, or sudden news events. To address such scenarios, the role of CDN (Content Delivery Network) is particularly crucial. This article will explore CDN's performance under high traffic conditions, its scalability, and how it ensures the stability and fast response of websites. CDN's Handling of High Traffic The fundamental role of CDN is to distribute user requests to multiple service nodes globally, which not only speeds up data loading but also effectively distributes the load on the origin server. When facing high traffic, CDN dynamically distributes traffic to multiple nodes, avoiding overload on any single node, thereby maintaining service stability and availability. Intelligent Load Balancing The intelligent load balancing feature in CDN technology continuously monitors the traffic and health status of each node in real-time, and automatically redistributes traffic as needed. This ensures that every request can be processed quickly and efficiently, greatly improving the overall response speed of the website and user experience, especially during sudden increases in user traffic. Scalability of CDN Scalability is one of the design principles of CDN. With business expansion and increased traffic, CDN can meet larger-scale traffic demands by adding more caching nodes and expanding the capacity of existing nodes. This scalability makes CDN particularly suitable for enterprises and services that need to handle large amounts of data and high traffic. Conclusion In high traffic environments, CDN's performance and scalability are crucial for ensuring the stable operation of websites. Through intelligent load balancing and dynamic node expansion, CDN can not only cope with sudden high traffic challenges but also provide continuous service improvement and support. As network demands continue to evolve, investing in high-performance CDN solutions will bring long-term benefits to enterprises, ensuring the provision of high-quality, fast internet experiences in any situation.