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{ eventType: PageViewEvent, 3mestamp: 1413215518, viewerId: 1234, sessionId: fa1afe101234deadbeef, pageKey: profile-view, viewedProfileId: 4321, trackingKey: invita3on-email, ... etc. metadata about what content was displayed... }

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{ eventType: PageViewEvent, 3mestamp: 1413215518, viewerId: 1234, sessionId: fa1afe101234deadbeef, pageKey: profile-view, viewedProfileId: 4321, trackingKey: invita3on-email, ... etc. metadata about what content was displayed... }

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{ eventType: ProfileEditEvent, 3mestamp: 1413215518, profileId: 1234, old: { loca3on: "London, UK", industry: "Financial Services"}, new: { loca3on: "Budapest, Hungary", industry: "SoTware"} }

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https://github.com/ept/newsfeed

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References 1.  Apache Samza documentation. http://samza.apache.org 2.  Tyler Akidau, Robert Bradshaw, Craig Chambers, et al.: “The Dataflow Model: A Practical Approach to Balancing Correctness, Latency, and Cost in Massive-Scale, Unbounded, Out-of-Order Data Processing,” Proceedings of the VLDB Endowment, volume 8, number 12, pages 1792–1803, August 2015. http://www.vldb.org/pvldb/vol8/p1792-Akidau.pdf 3.  Shirshanka Das, Chavdar Botev, Kapil Surlaker, et al.: “All Aboard the Databus!,” at ACM Symposium on Cloud Computing (SoCC), October 2012. http://www.socc2012.org/s18-das.pdf 4.  Nathan Marz and James Warren: “Big Data: Principles and best practices of scalable realtime data systems.” Manning, April 2015, ISBN 9781617290343. http://manning.com/marz/ 5.  Martin Kleppmann: “Designing data-intensive applications.” O’Reilly Media, to appear. http://dataintensive.net 6.  Martin Kleppmann: “Moving faster with data streams: The rise of Samza at LinkedIn.” 14 July 2014. http:// engineering.linkedin.com/stream-processing/moving-faster-data-streams-rise-samza-linkedin 7.  Jay Kreps: “Why local state is a fundamental primitive in stream processing.” 31 July 2014. http://radar.oreilly.com/ 2014/07/why-local-state-is-a-fundamental-primitive-in-stream-processing.html 8.  Jay Kreps: “I ♥︎ Logs.” O'Reilly Media, September 2014. http://shop.oreilly.com/product/0636920034339.do 9.  Praveen Neppalli Naga: “Real-time Analytics at Massive Scale with Pinot.” 29 Sept 2014. http:// engineering.linkedin.com/analytics/real-time-analytics-massive-scale-pinot 10.  Lili Wu, Sam Shah, Sean Choi, Mitul Tiwari, and Christian Posse: “The Browsemaps: Collaborative Filtering at LinkedIn,” at 6th Workshop on Recommender Systems and the Social Web, Oct 2014. http://ls13-www.cs.uni-dortmund.de/ homepage/rsweb2014/papers/rsweb2014_submission_3.pdf

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