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eBay Tech Blog

To support the world’s largest internet marketplace, eBay tackles technical challenges at a scale that few others have. With this blog, we share our experiences working on those challenges with the technical community.


Interactive Visual Search

By: M. Hadi Kiapour, Robinson Piramuthu and Shuai (Kyle) Zheng

Interactive visual search with user feedback helps buyers find the perfect item and while enjoying the exploratory journey.

Featured Blog Posts

Browse eBay with Style and Speed
Announcing Kylin: Extreme OLAP Engine for Big Data
Statistical Anomaly Detection
Effective Front-End Code Review

eBay OAuth Client Library

By: Sandeep Dhiman

To make integrations with eBay RESTful APIs easier, eBay provides client libraries in C# and Java to make it simpler to set up authorization and reduce the amount of code application developers have to write to get OAuth Access Tokens.

Most Commented

SRE Case Study: Mysterious Traffic Imbalance
Your Own Spring Test Context
GUI Testing Powered by Deep Learning
Finding Desirable Items in eBay Search by a Deep Dive into Skipped Items

Sharing Modules Across Experience Services and Multi-Screen Applications

By: Chuck Zheng

By now most eBay core business flows have gone through the journey of implementing Experience Service-based multi-screen application solutions, where web and mobile native app user interfaces are composed of one or more modules, and Experience Services directly returns these modules to clients with content synthesized from backend data sources, localized and formatted, ready for render and user interaction. This article outlines a plan to move more modules to a shared environment.


Providing Metadata Discovery on Large-Volume Data Sets

By: Satbeer Lamba and Sudeep Kumar

Many big data systems collect petabytes of data on a daily basis. Such systems are often designed primarily to query raw data records for a given time range with multiple data filters. However, discovering or identifying unique attributes present in such large datasets can be difficult.


Seven Tips for Visual Search at Scale

By: Fan Yang, M. Hadi Kiapour, Qiaosong Wang and Robinson Piramuthu

We present seven tips for visual search at scale, based on our KDD 2017 paper titled "Visual Search at eBay."


Troubleshooting a Connection Timeout Issue with tcp_tw_recycle Enabled

By: Edward Lin and Huai Jiang

Availability and stability are very important for eBay's site, especially for those applications that take high traffic and are dependent on many other applications, such as CAL (our Centralized Application Logging framework). This blog shares an issue that happened recently that impacted the availability and stability of CAL, and how we found out the root cause using tcpdump and systemtap.


Working on the Engines While the Plane is Flying

By: Brian Davies and Thilak Thankappan

Operators of large scale networks will, from time to time, be required to perform major upgrades to the network while keeping the network available with no downtime. This type of work has been compared to working on the engines of an airliner while it is flying. At eBay, our Site Network Engineering team recently completed a migration of our data center aggregation layer from one platform to another under these conditions. By sharing our experience, we hope to help our peers in the industry plan for and successfully execute their own network transformations.

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