public void setReaderEndpoint(String readerEndpoint) {
        this.readerEndpoint = readerEndpoint;
    }
<p>
The reader endpoint for the cluster. The reader endpoint for a cluster load balances connections across the
Amazon DocumentDB replicas that are available in a cluster. As clients request new connections to the reader
endpoint, Amazon DocumentDB distributes the connection requests among the Amazon DocumentDB replicas in the
cluster. This functionality can help balance your read workload across multiple Amazon DocumentDB replicas in
your cluster.
</p>
<p>
If a failover occurs, and the Amazon DocumentDB replica that you are connected to is promoted to be the primary
instance, your connection is dropped. To continue sending your read workload to other Amazon DocumentDB replicas
in the cluster, you can then reconnect to the reader endpoint.
</p>

@param readerEndpoint
       The reader endpoint for the cluster. The reader endpoint for a cluster load balances connections across
       the Amazon DocumentDB replicas that are available in a cluster. As clients request new connections to the
       reader endpoint, Amazon DocumentDB distributes the connection requests among the Amazon DocumentDB
       replicas in the cluster. This functionality can help balance your read workload across multiple Amazon
       DocumentDB replicas in your cluster. </p>
       <p>
       If a failover occurs, and the Amazon DocumentDB replica that you are connected to is promoted to be the
       primary instance, your connection is dropped. To continue sending your read workload to other Amazon
       DocumentDB replicas in the cluster, you can then reconnect to the reader endpoint.
aws-java-sdk-docdb/src/main/java/com/amazonaws/services/docdb/model/DBCluster.java