Tech Blog Archive

Microservices in Engineering

API Evolution Is a Challenge. Could Contract Testing Be the Solution?

Contract testing has grown in popularity in recent years with the widespread adoption of microservice architectures. In this article, we will share our experiences with contract testing at eBay.

By: Xiaoye Wang, Simon Wang, Daphne Huang, David Van Couvering and Qingyuan Liu
Competitions in Engineering

eBay Announces Winners of 4th Annual Machine Learning Challenge

Using the power of natural language understanding, these two students created fantastic solutions.

By: Dan Nosowitz
Advertising in Engineering

How eBay Created a Language Model With Three Billion Item Titles

By leveraging deep learning techniques to compare the titles of product listings, we greatly improved the relevance of our recommended items on eBay’s View Item page.

By: Chen Xue, Jesse Lute, Dan Schonfeld, Guoping Han and Leonard Dahlmann
Testing in Engineering

How eBay’s Notification Platform Used Fault Injection in New Ways

eBay’s notification platform team built a fault-tolerant, resilient system by injecting faults in the application level.

By: Wei Chen
Kubernetes in Engineering

Why and How eBay Pivoted to OpenTelemetry

eBay makes a crucial pivot to OpenTelemetry to better align with industry standards for Observability.

By: Vijay Samuel
Testing in Engineering

Increase A/B Testing Power by Combining Experiments

How the powerful meta-analysis method called "weighted z-test" can help eBay become more efficient.

By: Zezhong Zhang
Advertising in Engineering

New Buyer Groups Tool Brings Personalized Marketing to eBay Sellers

Sellers in the U.S., U.K., Germany, Australia, France, Italy and Spain now have access to Buyer Groups, a new tool which allows them to segment their buyers to drive more repeat business.

By: Parin Jogani and David Bernstein
Advertising in Engineering

Multi-Objective Ranking for Promoted Auction Items

Determining which promoted auction items to display in a merchandising placement is a multi-sided customer challenge that presents opportunities to both surface amazing auction inventory to buyers and help sellers boost visibility on their auction listings.

By: Ishaan Arora, Chen Xue, Jesse Lute and Dan Schonfeld
Machine Learning in Engineering

Sherlock.io: An Upgraded Machine Learning Monitoring System

Billions of queries require new, smarter alerting features.

By: Huai Jiang
Microservices in Engineering

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