Cache
From JumbaWiki
A cache - pronounced "kaysh" (or "cash" in US) - is a temporary storage area where frequently accessed data can be stored for rapid access.
A web browser keeps a cache of data (eg images) from recently visited web sites. If you visit the same web site again, the images can be fetched from the cache much faster than requesting them from the web server again. This also reduces bandwidth usage. Earlier versions of Internet Explorer have had issues with updating complete websites because the cache overrides when refreshing (usually for linked CSS or JavaScript files).
The caches for Firefox and Internet Explorer are stored in separate areas and cannot be combined.
A cache can also be set up to be stored on one computer when using the internet on a network of computers, to save multiple users downloading the same content frequently. This is one purpose of a proxy server.
