META Name Cache Control
The Meta cache control tag allows Web publishers to define how pages should be handled by caches. They include directives to declare what should be cacheable, what may be stored by caches, modifications of the expiration mechanism, and revalidation and reload controls.
Cache memory is extremely fast memory that is built into a computer’s central processing unit which allows programs to operate more quickly and efficiently.
Most browsers store pages that have been accessed frequently in their cache-memory, so whenever you access the pages again, the information and pictures don’t have to be downloaded again. Internet Explorer stores webpages and web files in the file Temporary Internet Files on your computer.
The Meta HTTP-EQUIV CACHE-CONTROL is specificly used by Internet Explorer.
The allowed values are:
- Public – may be cached in public shared caches
- Private – may only be cached in private cache
- no-Cache – may not be cached
- no-Store – may be cached but not archived
This meta tag has almost no influence on your search engine ranking.
You may add this Cache-control meta tag to all of your webpages, so not only in the first index page. Make sure that on every page relevant meta tags are added.