APR 24, 2026

Understanding Etsy’s Vast Inventory with LLMs

For more than 20 years, Etsy has been the destination for human creativity online. Our marketplace is home to more than 100 million special items made,...

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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...

PlatformFrontend

13 min

EtsyMar 20, 2026

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...

PlatformFrontend

13 min

Weekly Brief

Top 10 engineering articles delivered every Monday.

EtsyMar 19, 2026

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...

PlatformFrontend

11 min