Tapjoy Engineering: Real-time Deduping At Scale

eng.tapjoy.com

At Tapjoy, analytics is core to our platform. On an average day, we're processing over 2 million messages per minute through our analytics pipeline. These messages are generated by various user events in our platform and eventually aggregated for a close-to-realtime view of the system. (...) In this post we look at how we handled the at-least-once semantics of our Kafka pipeline through real-time deduping in order to ensure the integrity / accuracy of the data.

You may or may not need to solve a problem with this level of technical complexity today, but it's important to understand just how hard it is to solve this type of problem well.

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