Set NODE_ENV=production in chat example and you get the warning:
Warning: connection.session() MemoryStore is not
designed for a production environment, as it will leak
memory, and will not scale past a single process.
Racer patches the memory store to redirect to a persistent store, yet 'connect' gives the above warning.
The easiest fix might be to check for the persistent store and alert user to ignore the following warning.
No longer relevant in 0.5