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Lemmy Federation Architecture Change Proposal (github.com)

submitted 1 year ago by [email protected] to c/[email protected]

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https://github.com/LemmyNet/lemmy/issues/3245

I posted far more details on the issue then I am putting here-

But, just to bring some math in- with the current full-mesh federation model, assuming 10,000 instances-

That will require nearly 50 million connections.

Each comment. Each vote. Each post, will have to be sent 50 million seperate times.

In the purposed hub-spoke model, We can reduce that by over 99%, so that each post/vote/comment/etc, only has to be sent 10,000 times (plus n*(n-1)/2 times, where n = number of hub servers).

The current full mesh architecture will not scale. I predict, exponential growth will continue to occur.

Let's work on a solution to this problem together.

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[–] [email protected] 0 points 1 year ago (1 children)

I would agree with all of your above points.

That said- https://github.com/LemmyNet/lemmy/issues/3245 The most recent idea has popped up a few times on both lemmy, and now github- and actually sounds like a potential solution as well.

Just- using signed messages between instances, which can be transmitting P2P, instead of direct only.

[–] [email protected] 1 points 1 year ago

Yeah what's being described there is basically a P2P model. I still think it wouldn't make a huge difference in the chattiness of the protocol. At best it would redistribute the load for outgoing federation messages, but not for incoming ones. An instance still has to receive each message individually, regardless of where they comes from.