The method comprises maintaining at least one connection to the server, receiving requests from the clients, transmitting the requests to the server, receiving responses to the requests from the server, and monitoring {HEAD ~ a server response time} for {TAIL ~ a selected request} sent to the server, the server response time for the selected request being the time elapsed between transmitting the selected request to the server and receiving a corresponding response from the server 
The method comprises maintaining at least one connection to the server , receiving requests from the clients , transmitting the requests to the server , receiving responses to the requests from the server , and monitoring { HEAD ~ a server response time } for { TAIL ~ a selected request } sent to the server , the server response time for the selected request being the time elapsed between transmitting the selected request to the server and receiving a corresponding response from the server
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