mirror of
https://mau.dev/maunium/synapse.git
synced 2024-12-21 03:03:51 +01:00
379d2a8c39
Converting some of the rst documentation to markdown. Attempted to preserve whitespace and line breaks to minimize cosmetic change.
30 lines
1.3 KiB
Markdown
30 lines
1.3 KiB
Markdown
# 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/..."`
|