Board Thread:Support Requests - Getting Technical/@comment-26847884-20141028201218/@comment-2170536-20141028233510

The problem with cookies and html5 web storage is that they are local to the browser and not saved on the server. People could save their own results but they wouldn't see anyone else's. Such storage is great for personal settings such as web page defaults, etc. but not useful for sharing information among multiple browsers.

There was some work done to enable a star rating system on the wiki developers' wiki (w:c:dev:StarRatings) but it was never finished, and I'm not sure they actually solved the persistence problem (I didn't exhaustively study their solution, so I may be wrong). My own personal solution to the problem was to store the ratings offsite on a publicly-hosted web server that provided MySQL/PHP capabilities, but that had its own set of challenges and I ultimately shelved it too.

If someone has done any research around MediaWiki-supported server storage capabilities, I would personally love to hear about it, as would the OP, I would expect. :)