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C* Summit EU 2013: Top-K Queries in Realtime with Cassandra and Intravert

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Published on Nov 12, 2013

Speakers: Jonathan Halliday, Core Developer at JBoss & Rui Vieira, Postgrad Student at Newcastle University
Slides: http://www.slideshare.net/planetcassa...
Performing ranking queries to find the most relevant documents, most popular urls, etc on huge datasets is trivial —if you're willing to wait a while for the answers. For those with less time to waste, this session describes techniques for performing such queries efficiently. We'll describe the ranking queries problem, outline the Cassandra CQL3 data structures and code that can be used to solve it and describe the trade-offs available. We describe intravert, an innovative server-side programming solution for Cassandra, and show how it can be used to reduce network usage and improve performance by filtering data closer to source.

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