Cache is a form of fast memory used to avoid having to fetch the original data from a slower store.

For example a CPU may have one or more caches to hold often-used data and instructions. This avoids the need to fetch it from much slower RAM.

Web browsers also use a cache to store recently fetched files that make up a web page. If the web page is viewed again then it looks to the cache first before making a request to the web server. This makes page loading much faster.

Challenge see if you can find out one extra fact on this topic that we haven't already told you

Click on this link: Cache


back to glossaryback to glossary