Is it possible to have a high availability setup, in this example going to 2 webservers, and allow it to fail over without dropping connections?
I have two webservers that are using comet, an HTTP technique where you have long-lived HTTP connections. I have two loadbalancers in front running heartbeat with a shared IP. If one of these front-end servers go down, all connections are lost.
I've heard there is a technique, perhaps with HAProxy, where the two servers keep track of the state of connections and if one of the servers fails, the other takes over, without dropping connections. I can't seem to find out how this is done.