Tom Pinckney of eBay discusses eBay's new graph-based recommendation engine. The first part of the talk is spent on discussing the theory behind the recommendation engine and the conceptual pieces of how it works.
The second part of the talk is spent on discussing eBay's implementation of Cassandra to implement the recommendation engine. In particular, the focus is on how eBay is able to use Cassandra to handle the tremendous scale that eBay needs for this kind of a recommendation system. As you can imagine, eBay has a tremendous amount of data that is constantly coming in. In using Cassandra, Tom explains how eBay is able to handle that load.
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