Five Tips for Working with Redux in Large Applications

A Keras multithreaded DataFrame generator for millions of image files

I am a dog,
as plain as can be,
 is…

Lessons Learned from Building Scalable Machine Learning Pipelines

Click Prediction ML Software…

k8s-workqueue: Simplified Kubernetes Batch Jobs

Exploratory Testing (ET) -What, When, Why and How

Pyrobuf — A faster Python Protobuf library written in Cython

Pyrobuf is an alternative to Google’s Python Protobuf library that is written in Cython and that offers better performance (roughly 1.5–2x faster), Python 3 support, and simple serialization/deserialization to JSON and native…

Parquet: Columnar Storage for Hadoop Data

At AppNexus, over 2MM log events are ingested into our data pipeline every second. Log records are sent from upstream systems in the form of protobuf messages. Raw logs are compressed in Snappy when stored on HDFS. That said, even with compression, this…

Ad Tech DeFi

Co-authored by Yana Volkovich and Moussa Taifi.

Graph-based Identity Resolution at Scale

Conducting an Internal Data Science Contest at AppNexus

(Co-Authored with Daniel Austin)