this post was submitted on 20 Oct 2026
574 points (98.5% liked)

Fediverse

44428 readers
1036 users here now

A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, Mbin, etc).

If you wanted to get help with moderating your own community then head over to !moderators@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)

founded 3 years ago
MODERATORS
 

I shared a link from NPR Tiny Desk but there was no image preview or video embed. After investigating this I learned that when you do that, each instance picks up the link and individually retrieves the link preview nearly simultaneously. For gargantuan sites like YT or Reddit, this is a trivial amount of traffic and not a problem, but for smaller sites like NPR this results in a sort of botnet DDOS attack on the site's servers. More here. Another example here . For that reason, NPR has blocked Fediverse servers like Mastodon.

I have experienced this on my personal server as well (DDOS), but at the time didn't know why, exactly.

This isn't the end of the world, but certainly is not great and hurts engagement with the content. Is there a solution for this? Perhaps using some sort of webtorrent service like PeerTube where they just fetch the information from another fediverse server instead of the source server? Maybe fetching embeds client-side? At least that would stagger the requests.

you are viewing a single comment's thread
view the rest of the comments
[–] Die4Ever@retrolemmy.com 20 points 23 hours ago (2 children)

they could include the link preview data as part of the federation

[–] lilbigmouth@piefed.zip 2 points 15 hours ago

Perhaps a modification to the ActivityPub specification?

[–] SorteKanin@feddit.dk 0 points 16 hours ago

How do you know that data is authentic?