int getLoadBalancedConnection( string $connectionType = 'write|readonly' )
getLoadBalancedConnection() returns the appropriate node number for the connection type, taking into account the connection type, the connection weight, whether connections are pinned and if there are any failed connection in any of the nodes.
To ensure the accuracy of the response, you should have executed at least one statement against the load balancer connection
In the following example, we have 4 nodes, 1
write and 3