Once a cache plugin is installed the sliding cart widget will display the same information’s until a new cache page it’s generated. This plugin take care of that and improve the default sliding cart widget using a javascript/AJAX call to dynamically load the information which will ensure on each page load the last information’s are show.
The site loading speed it’s not affected in any way, practically, it does a AJAX call once the page it’s fully loaded.
WOW, this work great, just use it along with W3Cache and the cart widget came back with live results. Excellent!