Why doesn't lemmy show communities in the 'all' section unless people from your server are already subscribed to him? (unilem.org)

submitted 1 year ago by bobman@unilem.org to c/asklemmy@lemmy.world

84 comments fedilink hide all child comments

It's excruciatingly obnoxious to have to rely on third party sources for what should be a first-party feature.

Like, I select all and then search a query. "Oh no, nobody on your server used a third party service to find it, so you won't see it here."

Like, how short-sighted is that, really? If I search for a string in the 'all' servers, I should have a list of 'all' the servers containing that string.

It's a really simple concept. Not sure why this post even has to be made, but I'm wondering if there's something I can do to make these 'features' more intuitive.

you are viewing a single comment's thread
view the rest of the comments

[-] Zalack@startrek.website 4 points 1 year ago* (last edited 1 year ago)

Sorry you're right that I wasn't being precise with my terminology. It's not a DDOS but it could be used to slow down targeted features, take up some HTTP connections, inflate the target's DB, and waste CPU cycles, so it shares some characteristics of one.

In general, you want to be very very careful of implementing features that allow untrusted parties to supply potentially unbounded resources to your server.

And yeah, it would be trivial to write a set of scripts that pretend to be a lemmy instance and supply an endless number of fake communities to the target server. The nice thing about this attack vector is that it's also not bound by the normal rate limiting since it's the target server making the requests. There are definitely a bunch of ways lemmy could mitigate such an attack, but the current approach of "list communities current users are subscribed to" seems like a decent first approach.

this post was submitted on 07 Aug 2023

53 points (76.2% liked)

Ask Lemmy

27281 readers

1483 users here now

A Fediverse community for open-ended, thought provoking questions

Rules: (interactive)

1) Be nice and; have fun

Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them

2) All posts must end with a '?'

This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?

3) No spam

Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.

4) NSFW is okay, within reason

Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com. NSFW comments should be restricted to posts tagged [NSFW].

5) This is not a support community.

It is not a place for 'how do I?', type questions. If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.

6) No US Politics.

Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online

Reminder: The terms of service apply here too.