Monday, 8 September - Wednesday, 10 September, 2025 In-Person Only | Amsterdam, Netherlands
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Have you ever wondered how GraphQL clients like Relay keep local data consistent across surfaces, ensuring that changes made within a session are seamlessly reflected across an application? In this talk, I'll delve into the concept of Local Data Consistency and explore how GraphQL clients at Meta, such as Relay, efficiently track and update changing GraphQL data locally, without introducing additional networking dependencies, and the UX benefits and features this unlocks.
Specifically, I’ll cover: - What even is Local Data Consistency, and why is it valuable to product developers? - How do you implement a data consistency engine from scratch? - How are advanced client-side features like offline mutation updates, asynchronous GraphQL request fetching, and more all made possible using a Local Data Consistency?
We will explore the novel static analysis approach used by Grats to enable a true implementation-first developer experience for building GraphQL servers in TypeScript.
If you are interested in compilers, type systems, static analysis and developer experience, this talk is for you!
Jordan has spent the last eight years working at Meta. He currently works on Relay, a sophisticated GraphQL client for JavaScript that powers most of Meta's JavaScript applications.
Wednesday September 10, 2025 09:40 - 10:10 BST Grote Zaal
