ejabberd - Comments for "Can I even do this? ejabberd with 500,000 concurrent users scenario. "

i have a similar project but

mahlekey — Tue, 21 Jun 2011 03:44:19 +0000

i have a similar project but for each chat room i am planning to have maximum user chatting to be 200 per room but can ejabberd actually handle 500k concurrent user cause facebook chat boast of just running 100 servers to sever 70 million concurrent users chatting. And the claimed using customised ejabberd application. what is the highest concurrent user acheived using ejabberd aside from fb chat....

hmm

niknak — Fri, 27 Aug 2010 14:32:59 +0000

Thanks for that.
I'll have to try something else then.

Re: Can I even do this? ejabberd with 500,000 concurrent users

zinid — Wed, 25 Aug 2010 16:49:09 +0000

I'm ejabberd developer and I *know* that 500k is impossible. And the problem is not in ejabberd performance only but in clients traffic as well - each client will receive 500k of XML packets when joining a room. In general it takes about 50 MBytes of traffic. You should change the design of your chat system, or use another technology.

bollocks.

niknak — Wed, 25 Aug 2010 13:28:27 +0000

zinid wrote:

Even with clustering setup, a room is maintained by one node only, so cluster will not help you too much. Also I don't think it is possible to handle 500k users in one MUC room.

Bollocks. Has anyone reported having an MUC with a ton of users? I'm just looking for ballpark numbers.

I'm trying to wrap my brain around how many instances I'd need to spin up to support that kind of user load.

Thanks for the reply.

Re: Can I even do this? ejabberd with 500,000 concurrent users

zinid — Wed, 25 Aug 2010 04:31:39 +0000

Even with clustering setup, a room is maintained by one node only, so cluster will not help you too much. Also I don't think it is possible to handle 500k users in one MUC room.