Wednesday 16 May 18:00

Scaling Out Backends for Mobile Apps

Afterwork seminar


LEVEL: Intermediate

Square’s Cash app has grown tremendously for the last few years currently being one of the most popular mobile apps for peer to peer payments in the US. Originally built as a hack week project it ran for a very long time on a single MySQL database.

The Cash app experienced exponential growth over the years. Jon Tirsen explains how Square scaled out the backend for its Cash app using Vitess, a database middleware for MySQL built at YouTube. With hundreds of tables, thousands of different queries, hundreds of different transactions and hundreds of thousands of lines of code that proved quite a challenge.

Topics include:


Jon Tirsen is a software engineer at Square, where he works on backend scalability issues for Square’s Cash app. Jon has been building software for more than two decades at companies such as Google and ThoughtWorks. He’s lived all over the world but has now returned to his home country, Sweden—at least for now.


18.00-18.15 – Meet & Greet

18.15-19.00 – Presentation

19.00-19.30 – Meet & Eat

19.30-20.00 – Q&A

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