Topic: Cluster decision Postgres-XL and what it should be Load Balancer

.. Postgres-XL - System for creation the multi-master of clusters, I work -
- all nodes always contain the actual data in the synchronous mode...
Good afternoon!
Prompt, what advise Load Balancer for cluster decision Postgres-XL (not to confuse with PostgreSql),
If I correctly understood that in the given picture it is a separate component and the decision OR in Postgres-XL already "All inclusive"
Thanks for any councils and answers.