Tech Blog Archive

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

Microservices

eBay's Notification Streaming Platform: How eBay Handles Real-Time Push Notifications at Scale

A case study demonstrates how eBay's Notification Engineering team optimizes a streaming system in a microservice architecture to support high-throughput broadcast notifications.

By: Xiaoye Wang
Advertising

Multi-Relevance Ranking Model for Similar Item Recommendation

Buyers reveal a whole range of behaviors and interests when they browse our pages, so we decided to incorporate these additional purchase intent signals into our machine learning model to improve the relevance of our recommended items.

By: Chen Xue, Rachel Vishnepolsky and Zhen Ge
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

eBay Is Hiring

612 Job Openings Start Your Search

North
America

435 Job Openings

Europe, Middle East
& Africa

96 Job Openings

Asia
Pacific

81 Job Openings
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
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
Developer Productivity

The Staging Dichotomy: Part Two

A two-part series on how eBay turned around an impeding staging environment into its biggest asset for developer productivity.

By: Senthil Padmanabhan
Developer Productivity

The Staging Dichotomy: Part One

A two-part series on how eBay turned around an impeding staging environment into its biggest asset for developer productivity.

By: Senthil Padmanabhan
Data Infrastructure and Services

eBay’s Global Secondary Indexes

How eBay enabled a real-time, distributed and performant index service for its NuData platform, a large-scale, in-house database platform

By: Jung-Sang Ahn and Dongho Kim
Frontend Engineering

Rethink Modals Management in React

A small, zero-dependency utility to manage modals for React.

By: Nate Wang and Feng Xie
Java

eBay Event Notification Platform: Listener SDKs

How eBay’s new event notification platform supports asynchronous communication for our API partners

By: Lokesh Rishi, Lead Software Engineer
Service Architecture

The Engineering Behind Coded Coupons, eBay’s New Seller Tool

This tool was developed by using a dual-write system — including Oracle and MongoDB.

By: Senthilkumar Gopal
Developer Tools

Surfacing eBay Inventory Across the Web with the eBay Items Widget

The new open-source widget gives developers several layout options for displaying eBay inventory in third-party shopping experiences.

By: Lokesh Rishi, Lead Software Engineer
eBay Connect 2021: Powered by You Banner with Maroon Hexagons Next to a Globe
Developer Tools

eBay Connect 2021: How Our Newest APIs Are Enhancing Customer Experiences

With some of our most innovative third-party developers attending eBay Connect this year, we shared new API capabilities as well as opportunities to enhance user experiences.

By: Tanya Vlahovic, Head of Developer Ecosystem & Distinguished Architect