MONGODB [DEBUG] Logging level is currently :debug which could negatively impact client-side performance. You should set your logging level no lower than :info in production. MONGODB (86ms) admin['$cmd'].find({:ismaster=>1}).limit(-1) MONGODB [DEBUG] Logging level is currently :debug which could negatively impact client-side performance. You should set your logging level no lower than :info in production. MONGODB (37ms) admin['$cmd'].find({:ismaster=>1}).limit(-1)