mirror of
https://github.com/element-hq/synapse.git
synced 2024-11-25 11:05:49 +03:00
27 lines
1.3 KiB
ReStructuredText
27 lines
1.3 KiB
ReStructuredText
Media Repository
|
|
================
|
|
|
|
*Synapse implementation-specific details for the media repository*
|
|
|
|
The media repository is where attachments and avatar photos are stored.
|
|
It stores attachment content and thumbnails for media uploaded by local users.
|
|
It caches attachment content and thumbnails for media uploaded by remote users.
|
|
|
|
Storage
|
|
-------
|
|
|
|
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 ``"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
|
|
``128`` and height ``96`` and type ``"image/jpeg"`` is stored under
|
|
``"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/..."``
|