Chronon, Airbnb's ML Feature Platform, Is Now Open Source

Re:Chronon, Airbnb's ML Feature Platform, Is Now Open Source by nikhilsimha on Tuesday April 09, 2024 @03:08PM (#39983029)

Let’s say you want to compute avg transaction value of a user in the last 90days. You could pull individual transactions and average during the request time - or you could pre compute a partial aggregates and re-aggregate on read.

OLAP systems are fundamentally designed to scale the read path - former approach. Feature serving needs the latter.

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Re:Chronon, Airbnb's ML Feature Platform, Is Now Open Source by esafak on Tuesday April 09, 2024 @04:50PM (#39984099)

Does Chronon automatically determine what intermediate calculations should be cached? Does it accept hints?

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Re:Chronon, Airbnb's ML Feature Platform, Is Now Open Source by nikhilsimha on Tuesday April 09, 2024 @06:10PM (#39984851)

We don't accept hints yet - but we determine what to cache.

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