this post was submitted on 22 Jun 2025
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Using Signal groups for activism (micahflee.com)
submitted 1 day ago by Pro@programming.dev to c/technology@lemmy.world
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[–] ouch@lemmy.world 7 points 5 hours ago (1 children)

Wrong. Signal servers don't know of group members.

[–] namingthingsiseasy@programming.dev 1 points 3 hours ago* (last edited 3 hours ago) (1 children)

Really? That's interesting. But the group membership list must be persisted somewhere, no? Otherwise, you wouldn't know where to send and receive messages. So where is it persisted then?

And also, how would you add someone to a group? When you add a new user to a group, would he be able to view all previous messages? Is it possible for this to scale to, say, a thousand or a million users?