.----------.                       .------.
    | Registry |                       | TMDB |
    '----------'                       '------'
          |                                |
 .----------------.                        |
 |  Periodically, |                        |
 |    at least    |                        |
 | every 24 hours |                        |
 '----------------'                        |
          |                                |
          |------------------------------->|
          |    Download the latest SURL    |
          |<-------------------------------|
          |                                |
          |                                |