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Handling 400k+ visitors at the world's largest physics lab (CERN)

Devoxx 2025Mar 20250 views

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About this talk

This talk gives an insight into the technologies used by CERN (the European Organization for Nuclear Research) in order to render the average visitor's experience as optimal as possible. The Science Gateway is a new exhibition center freely accessible to visitors, meaning that a significantly higher volume of people started coming to CERN as a touristic destination. The problem is gracefully handling the capacity that we have for visits, using Drools as the main engine for making the booking experience ideal. We'll do a deep-dive into the challenges and the technical details faced by this project, as well as some performance metrics showcasing the strength of this solution. Lastly, we'll be diving into some code in order to better understand how to leverage Drools to build your own intelligent systems.