Hello!
In order to improve the performance on All The Tropes I've enabled file caching here. The first visitor of a page will trigger a function in MediaWiki which not only renders the HTML page, but saves it to a hard disk too (a place which gets mounted on all MediaWiki servers - so all MediaWiki servers share the same cache) as an HTML. When a user requests the Orain servers to render a page, it just will send the content of the HTML file. This should lead into noticeable performance improvements.
I'm not sure if it works, but the cache can be purged like this, and on each 3rd hour of the day, a script will be rebuilding the full cache. While I don't expect any (major) issues, please do not hesitate to contact me if you encounter any problems, and you suspect that those are caused by the new file caching feature. Regards, Southparkfan (Orain sysadmin)