User blog comment:DaNASCAT/Technical Update: May 6, 2015/@comment-24409505-20150509101641

I've been wondering for a while... Is there any way for users to force a flush of the cache? I often use Special:Wantedpages, Special:Wantedcategories, etc., as I find them very helpful. This new Insights feature also seem to retrieve the data from those pages. But the problem is that every time I fix broken links I have to wait days before the cache is refreshed to see the new updated links of "wanted pages" and new broken links. I have tried using ajax auto refresh on these special pages, but that doesn't work.

Edit: I just scrolled down and saw a similar comment. So the cache is purged once a day? Somehow, I have often encountered in the past that the message "The following data is cached, and was last updated" includes a date set several days ago? In any case, it should be either purged more frequently, or better, give the user the option to purge manually (i.e. using a button). That way, not all the Special pages need to be purged (saving server bandwidths?), only those the user choose to purge, plus the user gets immediate results.