Let’s say we have lemmy instances A, B, C.
alice from A makes a post “Hello, world” to B. What happens? How is it processed on servers A, B, C and how do users from A, B, C receive her post?
Let’s say we have lemmy instances A, B, C.
alice from A makes a post “Hello, world” to B. What happens? How is it processed on servers A, B, C and how do users from A, B, C receive her post?
That’s not quite true. They don’t do it automatically or routinely, but a user can cause a server to read a post from another server by putting its URL into the search box. This can be useful for an end user to manually address a federation glitch.
Here’s a concrete example. I was trying to post a comment via lemmy.world, but lemmy.world sits behind Cloudflare, and Cloudflare flagged its content as potentially malicious. I then posted that comment via my own Mastodon server, but push federation to lemmy.world also failed, for the same reason. I could, however cause lemmy.world to pull the comment using the search.