TLDR Tech / Data
The guest journey, updated in real time: extending Airbnb's sequence recommender with Chronon
Airbnb extended Chronon to update guest-journey features from batch refreshes to event-driven processing, cutting feature staleness from roughly two days to under a minute. Push Mode and near-real-time model transforms feed embeddings into online ranking while preserving offline training consistency. The architecture illustrates how feature platforms can bridge streaming updates, experimentation, and low-latency serving.
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