Importance

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Abstract

A web site is provisioned with a proxy that receives a page request intended for the server and records a first time. The page request is then forwarded to the server for response. The response stream generated by the server is intercepted at the proxy at a second time. As the stream is forwarded to the requesting client, the proxy inserts a page script that, upon execution at the client, calculates a page render time. This time is determined by calculating the difference between a third time (the time at which the page script begins execution at the client) and a fourth time (a time at which the page rendering is complete). Upon completion of the page rendering, the script opens a connection back to the server and returns a packet that includes the page render time. This packet is received at a fifth time. A transaction record is then built by the proxy using the timestamp data.

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First Claim