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How do lemmings update their local list of communities@foreignInstance? (beehaw.org)

submitted 1 year ago by boomboxnation@beehaw.org to c/technology@beehaw.org

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I am trying to find an additional home base lemmy that I jive with that is a bit smaller and less likely to get crushed. While exploring I have found disparities in which foreign communities I can search for and find despite all being in the federated instance list. Most of the time I can’t find the community I know exists, or I do find and the User count is so wildly off that I question if I have found the correct one(I have).

It seems to me that the communities@foreignInstance are irregularly/periodically updated into a local cache. If I am correct can Lemmy servers at least expose ‘Last Update time’, ‘Next Update time’ and just general mean time between updates?

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[–] Spzi@lemmy.click 0 points 1 year ago (1 children)

Still learning, so take with salt.

Someone has to be the first to discover a community. Let's say we're looking for https://lemmy.example/c/community a.k.a. community@lemmy.example

You can discover it by prefixing a bang: !community@lemmy.example

Oddly enough, it also sometimes helped me to search for 'All', not specifically for 'Communities', in order to discover communities.

Sometimes all of that did not work, but I could visit the community with a manually constructed link. Say my home instance is home.instance, then the link would be: https://home.instance/c/community@lemmy.example

I try all of these and eventually succeed. Sometimes it takes up to 1 day though. I guess and hope that's due to the load caused by the reddit migration.

[–] pe1uca@lemmy.pe1uca.dev 1 points 1 year ago

Probably what's happening is your instance is still doing the initial import of the community.
When someone searches for a community for the first time the instance also fetches 20 posts (I'm guessing the most recent ones).
Because of this the search result for the first time will not contain the community, after a few minutes it will appear.
One thing is for sure, you need to use the correct format to denote a community and also do it in the search page.