Tech Blog Archive

Solving technical challenges at scale to power the world’s largest Internet marketplace.

Developer Tools

OpenFeature, With Contributions From eBay, Submitted to CNCF's Sandbox Program

The new open feature flagging standard enables companies to deliver cloud-native applications more effectively.

By: Justin Abrahms, Principal Architect, Chair of eBay's Open Source Program
Competitions

eBay’s 3rd University Machine Learning Competition: Predicting Shipping Delivery Dates

For our annual ML competition, we challenged university students to predict how many days a carrier takes to deliver packages.

By: Uwe Mayer, Senior Applied Researcher
Advertising

Improving Shopping Recommendations for Customers Through eBay’s Relevance Cascade Model

Under the new machine learning model, buyers are recommended items that are more aligned to their shopping interests on eBay.

By: Chen Xue, Applied Researcher
Deep Learning

Building a Deep Learning Based Retrieval System for Personalized Recommendations

A step-by-step guide on how to build a state-of-the-art recommender system in an industrial setting.

By: Yuri M. Brovman
Developer Tools

How eBay Developed an Automatic Testing Solution for Batch Application Upgrades

A look at how our eBay technologists created an automatic testing solution for batch applications.

By: Paul Zhang and Tao Jin
Developer Productivity

Creating High-Quality Staging Data with a NoSQL Data Migration System

At eBay, we’ve focused on improving our staging environment to increase our software delivery speed, which ultimately allows us to launch features faster to our customers. Over the last several months, we’ve raised the quality of our staging data by establishing a dedicated and scalable data migration system.

By: Ramesh Periyathambi
Developer Tools

A Lightweight Distributed Architecture to Handle Thousands of Library Releases at eBay

A new lightweight distributed architecture is proposed and applied on eBay’s release system to support thousands of libraries release work in high efficiency.

By: Tao Jin and Paul Zhang

eBay Is Hiring

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Cloud

GraphLoad: A Framework to Load and Update Over Ten-Billion-Vertex Graphs with Performance and Consistency

GraphLoad is a scalable graph loading framework eBay developed and deployed in production. It has been loading and updating a graph with over 15 billion vertices and over 20 billion edges since May 2020.

By: Tom Schweiger, Hieu Nguyen, Jun Li, Leo Hu and Sakilaa Gopalsamy
Developer Tools

eBay’s Mavenization Strategy of Legacy Domain Business Libraries

A brand new methodology to ameliorate the development and release process for eBay site business

By: Paul Zhang and Tao Jin