search for: recirding

I have the need to maintain a pseudo-realtime database of active calls across a number of asterisk servers. The main purpose of this is in determining where to route calls (e.g. don't send calls to a server with no free lines) and also for monitoring/recirding calls. I know that astguiclient does this by telnetting into the * server management interface ever 333ms and updating a MYSQL database. Does this place much load on the * server, or the DB server? Will this sort of model scale to 30 servers, each with 120 Zap channels? --