this post was submitted on 05 Nov 2024
275 points (99.6% liked)
Fediverse
28226 readers
463 users here now
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Rules
- Posts must be on topic.
- Be respectful of others.
- Cite the sources used for graphs and other statistics.
- Follow the general Lemmy.world rules.
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Yes, for example go to https://infosec.exchange/explore
I see the top post as https://infosec.exchange/@nocontexttrek@mastodon.social/113433063621462027 and the image is https://media.infosec.exchange/infosec.exchange/cache/media_attachments/files/113/433/063/582/671/258/original/71da3801e4e4f08c.png
The link is to the original on https://files.mastodon.social/media_attachments/files/113/433/062/676/773/993/original/f828afef5cc7ed1c.png but when you click image the javascript loads a modal with the local cached version (same image as the thumbnail that infosec.exchange loads.
There's lots of different codebases across the fediverse so perhaps some hotlink, but local copies is the default.
The Lemmy server config indicates that is an optional setting to improve user privacy so requests don't ever hit the original server from the client. Those cached files are only temporary and will be deleted after some time. So it's not really full blown duplication.
The default setting is to only generate the thumbnails and store those locally (indefinitely?) but even that can be turned off. I checked and it appears that lemmy.world has the thumbnail generation disabled so all images from other instances just link to the original on that instance.
Ok, so Lemmy doesn't cause the same amount of duplication, but I'd still argue that dedupe is valuable: it saves on hosting costs (your costs, in this case) and users will get a small advantage in having slightly higher cache hits.
For sure, I'll add it to the list. :)