Force iframes on other sites clear cache when loading your content
<p>I have an interactive map using Leaflet and D3.  Other sides are embedding this map in an iframe.  Mapquest just changed their map tile offering, so we had to switch to a different provider.</p>

<p>Problem is that anyone who has already viewed the map will not get the new JS file even on a page refresh.  I've added meta tags to the HTML file to prevent caching, but again anyone who's already viewed the app isn't going to get the updated HTML.</p>

<p>Any suggestions on how to get these iframes to load the updated content?</p>