Varnish is being used to cache requests to ShoutWiki. If you notice an issue with the cache not updating, please contact the Technical Team (or if you are on the tech team and cannot solve the issue, poke me on IRC). To test if something is an issue with the caching or not, you can override varnish by browsing to subdomain.nocache.shoutwiki.com (e.g. www.nocache.shoutwiki.com or fi.starwars.nocache.shoutwiki.com). Please do not abuse this override as the cache is meant to reduce stress on the main webserver (apache uses a decent amount of CPU every pageload due to the large number of extensions installed and whatnot, so every bit helps).