[Red5] The best way to send text message to users

[Dan Daemon]

Hello guys,

I have the situation, I have 3000 concurrent members in one room,
and I want to send them text message. What should I use?

Should I use shared objects? or function invokeOnAllConnections( ... )?

I want to understand what will server CPU usage under
sending text message to 3000 connections at same time?

Thanks,
Dan