Purge Remote Media API
======================

The purge remote media API allows server admins to purge old cached remote
media. 

The API is::

    POST /_matrix/client/r0/admin/purge_media_cache

    {
        "before_ts": <unix_timestamp_in_ms>
    }

Which will remove all cached media that was last accessed before
``<unix_timestamp_in_ms>``.

If the user re-requests purged remote media, synapse will re-request the media
from the originating server.
