With forewarning about a huge influx of users, you know Lemmy.ml will go down. Even if people go to https://join-lemmy.org/instances and disperse among the great instances there, the servers will go down.
Ruqqus had this issue too. Every time there was a mass exodus from Reddit, Ruqqus would go down, and hardly reap the rewards.
Even if it’s not sustainable, just for one month, I’d like to see Lemmy.ml drastically boost their server power. If we can raise money as a community, what kind of server could we get for 100$? 500$? 1,000$?
Currently, I believe Mastodon/Misskey/Calckey/Akkoma/Friendica users can post and reply to Lemmy groups/communities. There doesn’t seem to be a way to follow them from Lemmy, though.
I think you might be able to follow Friendica groups, though.
And kbin and Lemmy have a lot of interoperability.