Etsy Engineering9 min readJul 14, 2023

Leveraging Real-Time User Actions to Personalize Etsy Ads

Introduction Personalization is vital to connect our unique marketplace to the right buyer at the right time. Etsy has recently introduced a novel, general approach to personalizing ML models based on

Machine LearningML modelsPersonalizationAPI DesignReal-time Processing

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Making Ads Count: Using MMoE and Auxiliary Tasks to Better Connect Buyers & Sellers

When buyers search on Etsy, they need to quickly and easily find the perfect item. At the same time, sellers need to be confident their unique products are...

Etsy Engineering11 min18d ago

Migrating Etsy’s database sharding to Vitess

Etsy has maintained a sharded MySQL architecture since around 2010. This database cluster contains most of Etsy’s online data and is made up of ~1,000 tables...

Distributed SystemsDatabases

MySQLVitessKubernetesDatabase ShardingLarge Scale SystemMicroservicesDatabase Architecture

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Leveraging Real-Time User Actions to Personalize Etsy Ads

Making Ads Count: Using MMoE and Auxiliary Tasks to Better Connect Buyers & Sellers

Migrating Etsy’s database sharding to Vitess

How Etsy Uses LLMs to Improve Search Relevance