John Long

In our first article, we introduced the concept and some of the benefits of event sourcing. For this article, we are going to get very specific about how we implemented event sourcing for the Enterprise Continuous Delivery (ECD) project here at eBay.

Using an Event-centric approach has enabled our team at eBay to scale to handle millions of events with the resiliency to recover from failures as quickly and reliably as possible. Though similar approaches have been widely adopted to augment large-scale data applications, for eBay's Continuous Delivery team, Event Sourcing is at the heart of decision-making and application development. To that end, we've built a system that continuously scales and tests our ability to handle an increasing volume of events and an ever growing list of external data sources and partner integrations.