I could not find a definitive answer on Twitter, but does that mean Eve players will become one of the biggest XMPP users group? I wonder if Eve enables federation and chatting with outsiders using regular XMPP clients.
It's not planned. To be precise in the beginning nothing will change for the players. They might be able to send messages which are four times as large.
As far as i know a modern more modular design was the main reason. And thus offload some of the CPU utilisation to not-game server.
More comments from the Dev here [0] and partly [1] here.
[0] https://forums.eveonline.com/t/dev-blog-new-chat-backend-com... [1] https://forums.eveonline.com/t/dev-blog-preparing-for-the-fu...
(Filter by clickning on the blue [DEV] avatar near "Frequent Posters" and select 'x post in this thread' to only see posts from that developer.
And this is on a single node. ejabberd can scale to a huge number of concurrent users.
They mention 3.4 million concurrent users online.
From what they say on clustering, it looks that this is also ejabberd.
EDIT: Or maybe Android users; looks like GCM is also XMPP behind the scenes.
I noticed something interesting while looking; it appears that at least one public XMPP server has experienced a recent large influx of new users.
>"The number of daily active users has increased more then three-fold in the last year alone." [1]
[1] https://jabber.at/b/temporary-suspension-of-registration/
https://yaxim.org/blog/2017/12/22/spam-reduction-on-yax-dot-...
https://www.bleepingcomputer.com/news/security/xsender-the-s...
I guess the eventual problem here is that everyone affected will turn off reception of messages from strangers. That would make XMPP somewhat less useful as a general method of getting in touch with someone.