Category: Engineering

As large-scale distributed microservice systems continue to power more of today’s businesses, it has become even more important to detect any anomalies in these systems and efficiently diagnose their root causes to ensure high system availability.  To diagnose any root causes, existing approaches have usually consisted of capturing information about the state of the system […]

How fast an item will arrive can be a major factor in whether a buyer will make a purchase online. As part of our overall reimagination of our marketplace, we are helping our sellers ship items faster and more accurately predict when they will arrive for buyers. Over the summer, we updated our shipping rate […]

This March, eBay launched a new event notification platform to push event notifications to developers. Event notifications update applications and users about events on the eBay site, and help reduce the number of API calls an application has to make to retrieve information. The new platform supports multiple payload schema versions, and enables message integrity […]

We create various internal user interface (UI) applications with React inside eBay. Modals, or pop-ups, are widely used to build these complex UI apps. They open a separate window to provide additional information for users, and act similar to a user opening a new browser window — except, with modals, a user can’t leave it […]

eBay’s NuData [1] database platform is built from the ground up to be a cloud-native, distributed, highly scalable and performant. We not only adopted state-of-the-art technologies to overcome the technical challenges that come with building a database platform at this scale, but we also invested heavily in operationalizing it, with capabilities of self-serving, monitoring and […]

Editor’s Note: A two-part series on how eBay turned around an impeding staging environment into its biggest asset for developer productivity. The act of staging either in plays, real estate or software development has been an industry practice for many decades. The staging methods have evolved over the years and continue to play a critical […]

This is the final installment of our two-part series on how eBay turned around an impeding staging environment into its biggest asset for developer productivity. In our first article, we explored if staging should exist, and  explained why we decided to pursue staging. We also outlined our problem statements and discussed how we addressed the […]

This topic introduces the methodology to mavenize more than 3,000 business libraries built by a legacy system. Those libraries together build up a huge dependency graph with sub-belonging dependencies. The article highlights the challenges during the migration process, including how to test the libraries in build and runtime level. On eBay, there are a large […]

NuGraph is a graph database platform developed at eBay that is cloud-native, scalable and performant. It is built upon the open-source graph database JanusGraph, with FoundationDB as the backend that stores graph elements and indexes. This article presents GraphLoad, a utility developed at eBay to load and update graphs at scale. GraphLoad is deployed in […]

On eBay, there are lots of scenarios that require a distributed system. A typical use case is when a large amount of libraries are release. There are more than 3,000 legacy libraries still built by the old build system based on Ant, which is no longer supported. These libraries are now being migrated to a […]