GrillRB Conference 2019

Link to the presentation: https://drive.google.com/file/d/1FDrHy1Mm7nJqa94n7voB3rxw49obSC9D/view

Event sourcing is a hot topic in Ruby community lately. But usually at conferences we just get a scratching-the-surface intro. This, in turn, is a story of building a event-sourcing-based product for a production environment, processing millions of events per day.