CE Cache is an ExpressionEngine® add-on that allows you, the developer, the ability to cache content on-the-fly in your templates. For performance heavy pages, this can dramatically increase page speed, as all of the heavy lifting does not need to occur on each page load.
The ultimate goal behind CE Cache is to aid you in increasing your site’s performance.
If you like waiting in lines, or enjoy watching web pages slowly load, then CE Cache is probably not for you. Your clients, on the other hand, may still prefer it.