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update media repository implementation docs

This commit is contained in:
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. 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 Metadata such as the MIME type, upload time and length are stored in the
sqlite3 database indexed by ``media_id``. sqlite3 database indexed by ``media_id``.
Content is stored on the filesystem under a "content" directory. Thumbnails are Content is stored on the filesystem under a ``"local_content"`` directory.
stored under a "thumbnails" directory. Thumbnails are stored under a ``"local_thumbnails"`` directory.
The item with ``media_id`` ``"aabbccccccccdddddddddddd"`` is stored under 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 ``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/..."``