this post was submitted on 06 Jun 2023
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UKCasual
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A friendly place to chat.
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I'm here still trying to figure out how instances and communities differ.
I signed up on lemmy.world, which is the hosting instance for my account, right? And then I'm posting this in a thread in the CasualUK community.
But is this community just on lemmy.world, or across all instances?
I'm working it out too.
Lemmy.world is an instance - a server that hosts your account and any data.
UKCasual is a community, essentially a subreddit. Its stored solely on the Lemmy.world server
Whilst this community is stored on lemmy.world, if you're logged into another instance you can still see and interact with the UKCasual community, but data remains on lemmy.world
I'm not sure if there's a sync delay between instances etc
Okay. So if lemmy.world goes down then presumably all the communities it hosts also go down? This seems to present a bit of a logistical problem for community longevity. For example, a small instance that creates a popular community across all of the fediverse then has to try and support a large amount of traffic with possibly little local income/support?
It also seems to create multiple of the same communities. Also depending on what instance you are signed up with you can't access posts from certain other instances
Only if your instance is banned by another.
Duplicate communities will exist for a while, but the same thing happens on reddit.