We are connecting to Biztalk and Azure services using REST connection.We were seeing the service response latency for biztalk services.

F5 on biztalk is in place for load balancing .Biztalk and network team and said the request is going to one of the node instance of biztalk XX and the least goes to YY node.And the reason for that per their assumption is my application may not be closing the connection and its maintaining the session and so the request are going to one instance XX instead of splitting the request equally .

Could anyone please help me understand whether PEGA maintains session id per service request thread or does it maintain for multiple service request with same session id as the biztalk and network team is saying.