Data caching improves system performance by storing frequently accessed data in a high-speed storage layer, typically closer to the application or user, reducing the need to fetch data from slower, more distant storage or databases. This minimizes latency and improves response times.
For example, when a user accesses a webpage, the server might cache static resources like images and scripts. On subsequent requests, these resources can be served directly from the cache instead of being retrieved from the original server, significantly speeding up page loading times.
In the context of cloud computing, services like Tencent Cloud's Content Delivery Network (CDN) offer caching capabilities. By distributing cached content across multiple edge servers globally, CDNs can deliver data faster to users by serving it from the nearest edge location, thereby reducing latency and improving overall system performance.