Local Data Consistency With GraphQL

Session description

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?