Every time I query a Mongo document a new authentication is being created. I'm doing this from my rails console.

For example: Search.count

Returns:

MONGODB | ds051371-a0.mongolab.com:51371 | myapp.getnonce | STARTED | {}
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.getnonce | SUCCEEDED | 0.001041145s
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.authenticate | STARTED | {}
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.authenticate | SUCCEEDED | 0.000993972s
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.count | STARTED | {"count"=>"mongo_searches", "query"=>{}}
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.getnonce | STARTED | {}
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.getnonce | SUCCEEDED | 0.001196958s
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.authenticate | STARTED | {}
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.authenticate | SUCCEEDED | 0.001096091s
MONGODB | ds051371-a0.mongolab.com:51371 | myapp.count | SUCCEEDED | 0.006626804s

My configuration is:

production:

1. Configure available database clients. (required)
   clients:
2. Defines the default client. (required)
   default:
   uri: <%= ENV['MONGOLAB_URI'] %>
   options:
3. max_retries specifies the number of times to attempt an
4. operation before giving up.
   max_retries: 5

1. retry_interval specifies the number of seconds to wait before
2. http://blog.mongolab.com/2014/02/mongodb-driver-tips-tricks-mongoid-3/
   retry_interval: 30

1. The time in seconds before Moped will timeout connection and node
2. operations. (default 5)
   timeout: 15

1. The maximum number of connections in the connection pool. (default: 5)
   max_pool_size: 20

1. Configure Mongoid specific options. (optional)
   options:
2. Raise an error when performing a #find and the document is not found.
3. (default: true)
   raise_not_found_error: true

I'm using Mongodb 2.6.8 and Mongoid 5.1.

Mongoid 5.1 should use a connection pool but it seems this is not happening. Any idea why?