"Oh my fucking God is this dude playing from Mars or something? Asshole has like 15,000ms latency and is glitching all over the place I can't hit the bastard!"
Meanwhile on Mars
"Fucking lag!"
The less data that needs to go across the link, the better. So you would definitely want to set up a CDN endpoint on Mars that would take cached copies of data.
Look backward to the past and see how it was done when links between systems were slow and less reliable.
Lots of caching and slow infrequent syncing.
When I first heard the term "fediverse", it immediately made me think of some sort of vast interplanetary network. And let's face it: a fediverse-like model is really what you would need if you had settlements scattered throughout the solar system. A monolithic, centralized service would be awful, given the reality of communication lag and likely limited bandwidth.
So let's say lemmy (or more generally activitypub) were to go interplanetary. How would that work out? You set up your first instance on Mars. Any content that's posted there will be immediately available to your fellow Martians. Earthlings who subscribe may also be able to view it as their instances cache the content, albeit after some delay.
But the trouble starts when Earthlings want to start contributing to the discussion. If they have to wait the better part of an hour to get a single comment lodged, it's going to get old fast.
So you would need to allow the Earth side to branch off to some extent from what's happening on Mars. Then eventually, something like a git merge would try to bring it all back together? I wonder if that would work?
Isn’t it currently also cached on the instance where the user is registered?
An earthling should not register on the mars instance or vice versa because of latency.
But commenting from the point of view of the earthlings should be smooth
So you're saying the comments themselves get cached on the local instance where the user is registered before being synced with the remote community-hosting instance?
I honestly don't know how these things work internally, but had assumed the comments needed to go straight to the remote instance given the way you can't comment once said instance goes down? You can still read the cached content though.
So, how serious are we about living on Mars at this point?
What would it be typical? I would expect a WAN to cover the planet and specific services geared towards sending packets back and forth between Earth.
An interesting idea is if a sneakernet system will be a good idea in space.
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