What is caching in computer networks

Caching in computer networks is the process of storing frequently used data or resources in a temporary storage location, called a cache, to improve the performance of the network. When a user requests a particular resource, such as a web page or file, the network checks if the resource is available in the cache. If it is, the network retrieves the resource from the cache instead of the original source, which can be slower to access. This reduces the time and bandwidth needed to access the resource, improving the overall network performance. Caching is commonly used in web browsers, content delivery networks, and proxy servers.