Cache functions like memory. It is a computer process that stores data in such a manner to allow for the fastest possible retrieval of content.
Web proxy servers (which deliver information across the WorldWideWeb) and your web browser (Internet Explorer, Safari and Firefox, for example) use web caches to store information like web page content in order to make the information retrieval process quicker and more efficient for the end-user. Web caches effectively reduce the amount of information needed to be transmitted across the network and the amount of bandwidth needed so you get the web page content faster.
In order for your web page content to be cached (stored) by the many caching systems employed by international data centers, internet service providers, and the various web browsers in use, it must first be 100% accessible to the search engine spiders, which are electronic bots that travel across the web scanning and indexing web page content.
Search engine optimization ensures that all your web page content is accessible to search engine spiders. If they can’t access your content it will not be cached and it cannot be indexed. Broken links, poor navigation structure, bad or broken programming code, diluted web page content, static or dynamically generated url strings that are not search engine-ready, no page titles – there are many reasons search engine spiders are unable to scan and index web pages.
A web cache can only store what a search engine spider has scanned and indexed. Search engine optimization is your best bet to ensure this can happen.
