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Recommendations at Airbnb were four orders of magnitude larger than fraud detection: each search ranked thousands of homes, each with thousands of features — roughly 1 trillion operations per request.

Recommendations at Airbnb were four orders of magnitude larger than fraud detection: each search ranked thousands of homes, each with thousands of features — roughly 1 trillion operations per request.

QCon

QCon

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0 vue Publié le 21/10/2026 18:02 1:00
Recommendations at Airbnb were four orders of magnitude larger than fraud detection: each search ranked thousands of homes, each with thousands of features — roughly 1 trillion operations per request.
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QCon @qconferences.com · 21/10/2026 18:02
Nikhil Simha, Co-Founder & CTO at zipline.ai, explains how the Chronon engine was rewritten to pre-compute most of that work, while keeping the API identical so nothing upstream broke.
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