Problem: My Node.js processes (drones on Nodejitsu) are repeatedly growing in memory until they crash and get restarted. They are multiple processes responding to websockets connections over socket.io, using socket.io's Redis store to broker messages across connections and broadcast messages.
Conclusion: that socket.io's Redis store's memory usage likely either grows indefinitely, or is just way too high. We also isolated semi-frequent reconnects to the redis client on the part of each node.js process, though this looks unrelated to the overall memory problem.
=== edited chat log of #nodejitsu on 25/11/2012 follows ==