I am using Consul for service discovery with a MongoDB replica set. In Consul, I have an address for a primary node (e.g. mongo-primary.service.consul). To connect, I use the following connection string:

mongodb://<user>:<password>@mongo-primary.service.consul:27017/feed?replicaSet=rs&connect=direct

1.) Is this a safe way to connect to my replica set? Does the Go driver cache DNS connections? Is there a way for me to configure the cache TTL?

2.) Is there a way for me to connect this way without the option connect=direct? Is that expected when connecting directly to the primary?