Ceph » Messengers

Right now SimpleMessenger has no mechanism for limiting the number of simultaneous connections it holds open. This is a facility it will need for handling large numbers of clients.

Probably the best mechanism is to keep the sockets on an LRU and when we need to open a new one that exceeds our limit, we close the oldest one. I think we have enough reconnect smarts at other layers that we can do this while still guaranteeing forward progress.