Jun 22

Fabien Loudet

How a simple code change reduced CPU usage by 97%

The migration broke production… and revealed a huge optimization opportunity.

How a simple code change reduced CPU usage by 97%Duo wearing glasses. In the reflection of his glasses are math symbols.

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How a simple code change reduced CPU usage by 97%

The migration broke production… and revealed a huge optimization opportunity.

How a simple code change reduced CPU usage by 97%Duo wearing glasses. In the reflection of his glasses are math symbols.

Duo giving a thumbs-up while sitting in front of a black desktop computer.

Jun 24 Kush Agrawal

How we built an automated unit test generation pipeline for iOS

Duo wearing glasses and sitting at a computer.

May 20 Aaron Wang

Triage, ship, debug—all from Slack

Duo looking into a sparkly crystal ball while wearing a purple wizard’s hat decorated with stars and a crescent moon.

Apr 15 Xuanji Li

Seeing the future: frontend prediction in Duolingo’s mobile app

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