mongoid.yml

# mongoid 3.x
#
# As discussed in: http://blog.mongolab.com/2014/02/mongodb-driver-tips-tricks-mongoid-3
#
production: 
  sessions:
    default:
      # The standard MongoDB connection URI allows for easy replica set 
      # connection setup. 
      # Use environment variables or a config file to keep your 
      # credentials safe.
      uri: 'mongodb://username:password@host1:port1,host2:port2/database'

      options: 
        # The default consistency is :eventual, which reads from 
        # secondaries when possible. 
        # Strong forces reads to primary. 
        # We recommend using strong consistency.
        consistency: :strong

        # max_retries specifies the number of times to attempt an 
        # operation before giving up.
        max_retries: 30

        # retry_interval specifies the number of seconds to wait before 
        # retrying a single operation.
        retry_interval: 1

        # The default timeout is 5, which is the time in seconds for an 
        # operation to time out.
        # We recommend 15 because it allows for plenty of time in most 
        # operating environments.
        # Mongoid doubles the configured value (known issue) so 15 
        # results in a timeout of 30s.
        # Note that if you have a long-running query (over 30 seconds), 
        # it will time out.
        # See our example for long-running queries in the blog post 
        # referenced above.
        timeout: 15