ES - Load balancer

Hi,

I am new to ES. I have read about elastic search. We are connecting to Elastic search via default 9200 port. All requests will be sent to 9200. ES internally load balances the requests to appropriate nodes and responds back (?) .

My question is what happens if more requests flood into 9200 node? Do we need to load balance externally ????

Thanks in advance

RANJITH VENKATESAN