Communications of the ACM
Why Google's Rapid Growth Means Faster Search
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The University of Southern California (USC) has released a study showing that Google search has greatly expanded and increased in speed over the past 10 months. Google search has increased by about 600 percent the number of worldwide locations from which it serves client queries. The number of locations serving Google's search infrastructure from October 2012 to late July 2013 climbed from less than 200 to more than 1,400, while the number of Internet service providers rose from slightly more than 100 to more than 850. Some of this growth is due to Google's reusing client networks to relay user requests and responses for search and ads.
In the past, when users submitted a search request to Google, it went directly to a Google data center, whereas now the request goes to the regional network and then to the Google data center. Using the client network as an intermediary also enables lost packets to be noticed and replaced much more rapidly.
The USC researchers developed a method to track and map servers that determines when they are in the same data center and where the data center is. Their next step is to quantify the performance gains for using this strategy and pinpointing underserved regions.
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Abstracts Copyright © 2013 Information Inc., Bethesda, Maryland, USA
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