The Hard Things About Scaling A Billion Dollars Platform

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18:30-19:00: Gathering (food and drinks)

19:00 –20:30- Scaling a system - when the stakes are high! - Assaf Singer (, Head of the Gemini native engineering group at Yahoo

Language: Hebrew


Gemini is Yahoo's native advertising platform and marketplace. Among the world's most popular advertising products, we serve hundreds of millions of users monthly and reach billions of dollars in annual revenue. When running such a cloud based system, downtime is simply not an option.

The Gemini engineering team, located in Yahoo Tel-Aviv, is responsible for all back-end development of this vast project; during this talk, we will share several of the critical architectural decisions allowing our high availability and resiliency.


Assaf Singer ( is currently the head of the Gemini native engineering group at Yahoo Tel-Aviv. An expert on design, implementation and operation of high scale, big (big) data systems, Assaf has been a Yahoo for the last 5 years, originally joining the Dapper team who founded the Yahoo Tel Aviv R&D center following it's acquisition by Yahoo (2010).