A cache is a type of storage area that keeps commonly or frequently used data, programs and content readily available, so that the computer can access them more quickly. Compared to the relatively slow storage of a hard-drive or server, a cache can and will store information like pictures, instructions, even programs, so that if the user wants to call them up again, they are available more quickly. In the case of web caching, a small section of a hard drive is set aside in order to store recently accessed web pages.