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update media repository implementation docs

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Mark Haines 2014-12-10 16:54:37 +00:00
parent 61fc37e467
commit 7f193b9958
1 changed files with 9 additions and 4 deletions
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docs/media_repository.rst
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@ -12,9 +12,14 @@ Each item of media is assigned a ``media_id`` when it is uploaded.
The ``media_id`` is a randomly chosen, URL safe 24 character string.
Metadata such as the MIME type, upload time and length are stored in the
sqlite3 database indexed by ``media_id``.
Content is stored on the filesystem under a "content" directory. Thumbnails are
stored under a "thumbnails" directory.
Content is stored on the filesystem under a ``"local_content"`` directory.
Thumbnails are stored under a ``"local_thumbnails"`` directory.
The item with ``media_id`` ``"aabbccccccccdddddddddddd"`` is stored under
``"local/content/aa/bb/ccccccccdddddddddddd"``. Its thumbnail with width
``"local_content/aa/bb/ccccccccdddddddddddd"``. Its thumbnail with width
``128`` and height ``96`` and type ``"image/jpeg"`` is stored under
``"local/thumbnails/aa/bb/ccccccccdddddddddddd/128-96-image-jpeg"``
``"local_thumbnails/aa/bb/ccccccccdddddddddddd/128-96-image-jpeg"``
Remote content is cached under ``"remote_content"`` directory. Each item of
remote content is assigned a local "``filesystem_id``" to ensure that the
directory structure ``"remote_content/server_name/aa/bb/ccccccccdddddddddddd"``
is appropriate. Thumbnails for remote content are stored under
``"remote_thumbnails/server_name/..."``