In Mongoid 2.x one could execute Mongoid.database.connection.close to reset a database connection. This specific API is no longer available in Mongoid3, what is the new way to reset a connection?
Motivation: interrupting a query while it's in-progress (ctrl-c) will kill your connection. Any subsequent queries will just hang. Additionally, thrown errors such as timeouts will do the same thing (see: http://simple10.com/rescuing-from-racktimeout-to-close-mongodb-connection).
I found the solution!
Mongoid::Sessions.default.disconnect
or
Model.collection.database.session.disconnect
This will properly reset the connection if you ctrl-c to interrupt a query in the console.