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Chapter 1. Response Time: Eight Seconds,... > A Brief History of Web Performance

A Brief History of Web Performance

Soon after the birth of the web, HCI researchers started studying online environments. Networked environments like the Internet add another dimension to the mix—namely, network latency. Unlike the closed computing environments that HCI researchers studied in the past, on the Internet the delay between requesting a resource and receiving it is unpredictable. The more resources a page has (graphics, multimedia), the less predictable the response rate.

Initially researchers studied the effects of fixed response times on user satisfaction. Later studies simulated variable response rates for more real-world results. Their metrics changed from user satisfaction and performance to measures such as attunability, quality of service, quality of experience, and credibility.


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