title: Does a facebook photo url always stay the same?
body: <p>I am getting photos from facebook through graph api with this call:</p>
  
  <p>https://graph.facebook.com/[AlbumID]/photos</p>
  
  <p>The links I get there for the - do they stay the same or do they change?</p>
  
  <p>I am interested because I like to cache these links, but if they get updated, eg the CDN does some updates or reorganisations, then there would be issues.
  Thanks,
  Marc</p>