If you subscribe to a community in a different instance, it's automatically mirrored there. If lemmy.world disappeared tomorrow, I'd still be able to view all the communities from lemmy.world on sh.itjust.works, for example.
If you post a new comment, it won't leave your instance, but all the old posts/comments will still be there.
If you post a new comment, it won't leave your instance, but all the old posts/comments will still be there.
Could you clarify this for me? Say I follow a community on instance A with an instance B account. Then the community is mirrored on B, including comments. I comment on a post. Then is my comment stored on both A and B?
Yeah, exactly. Let's say you're on instance B and I'm on instance C, and we both follow a community on instance A. You comment on a post, it will be stored on your instance B, and sent to instance A. Instance A will share it with my instance C because I follow the community, and it will be mirrored on all 3 instances. If instance A goes down, or doesn't exist anymore, the old post/comments will still be there on instance B and C. If you leave new comments after instance A goes down, they won't make it to my instance C. That's my understanding at least, hope that makes sense!
As long as there's a subscriber to the community on another instance, it will automatically have a copy there, that's just how the federation works. It's not really a backup, and it only has posts since someone subscribed to the community from that instance.
But if you're worried about what will happen to old posts from lemmy.world communities: if you can read it now from your instance, it will still be there if lemmy.world disappears.
And @redw0rm too... the problem with the server outages is that I can't even search for my original Lemmy World communities on Lemmyverse, let alone subscribe to them from a different account. How am I supposed to copy everything from those communities using that service you mentioned if I can't access them?
15 Comments
pornhubfan@sh.itjust.works · 9 pts · 3y
If you subscribe to a community in a different instance, it's automatically mirrored there. If lemmy.world disappeared tomorrow, I'd still be able to view all the communities from lemmy.world on sh.itjust.works, for example.
If you post a new comment, it won't leave your instance, but all the old posts/comments will still be there.
humanplayer2@lemmy.ml · 1 pts · 3y
Could you clarify this for me? Say I follow a community on instance A with an instance B account. Then the community is mirrored on B, including comments. I comment on a post. Then is my comment stored on both A and B?
pornhubfan@sh.itjust.works · 2 pts · 3y
Yeah, exactly. Let's say you're on instance B and I'm on instance C, and we both follow a community on instance A. You comment on a post, it will be stored on your instance B, and sent to instance A. Instance A will share it with my instance C because I follow the community, and it will be mirrored on all 3 instances. If instance A goes down, or doesn't exist anymore, the old post/comments will still be there on instance B and C. If you leave new comments after instance A goes down, they won't make it to my instance C. That's my understanding at least, hope that makes sense!
humanplayer2@lemmy.ml · 1 pts · 3y
Ah, OK, thanks. Nice with so much redundancy!
Kinda odd that you'd still be able to comment, even if the original is unavailable, but also nice.
Say A comes up again. Will comments I made on B while it was down be pushed over?
favrion@lemmy.ml · 1 pts · 3y
I have six communities to back up. So how does that work?
pornhubfan@sh.itjust.works · 6 pts · 3y
As long as there's a subscriber to the community on another instance, it will automatically have a copy there, that's just how the federation works. It's not really a backup, and it only has posts since someone subscribed to the community from that instance.
But if you're worried about what will happen to old posts from lemmy.world communities: if you can read it now from your instance, it will still be there if lemmy.world disappears.
favrion@lemmy.ml · 2 pts · 3y
Got it. I still created backups, but I will subscribe to them with my other instance accounts. That didn't occur to me.
Blaze@sopuli.xyz · 3 pts · 3y
Commenting because I'm interested as well (as I guess a lot of mods are)
redw0rm@kerala.party · 1 pts · 3y
If what you want to do is "copy all my communities from current instance to new instance", then there is a tool called lasim.
Or did you mean to backup, like as to save all posts and subscribed users ?
favrion@lemmy.ml · 4 pts · 3y
Backup and have a place to evacuate to if Lemmy World collapses.
RoundSparrow@lemmy.ml · 1 pts · 3y
do you mean "copy my list of subscribed communities to my user on to another user"?
favrion@lemmy.ml · 0 pts · 3y
And @redw0rm too... the problem with the server outages is that I can't even search for my original Lemmy World communities on Lemmyverse, let alone subscribe to them from a different account. How am I supposed to copy everything from those communities using that service you mentioned if I can't access them?
RoundSparrow@lemmy.ml · 2 pts · 3y
what exactly do you mean to copy? messages, posts and comments from other people?
Are no other servers subscribed to that community and have copies?
remkit@lemmy.kya.moe · 2 pts · 3y
Wait till lemmy.world is up, and then run the tool?
Blaze@sopuli.xyz · 0 pts · 3y
Second I guess, I know because he asked earlier about setting a back up community in case the instance his community is currently on goes bust