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Dominik 🔮
@tkdodo.eu

🚢 @tanstack.com Query v5.63.0 ships with a great new feature: The ability to unsubscribe an observer from the cache. This will hopefully help in react-native, where screens might stay mounted even if they aren't visible. Unsubscribing makes sure those don't re-render and won't trigger fetches.

github.comRelease v5.63.0 · TanStack/queryVersion 5.63.0 - 1/8/25, 2:21 PM Changes Feat react-query: allow useQuery and useQueries to unsubscribe from the query cache with an option (#8348) (e2bc216) by Dominik Dorfmeister Packages @tan...
Hirbod
@hirbod.dev

This was one of the topics that I had with @tkdodo.eu. React freeze did prevent re-rendering, but the observers would still fetch and run, just the rendering would be frozen. With the new flag, you can make sure to stop out of screen views/components from actually doing anything unless subscribed

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Hirbod
@hirbod.dev

So while react-freeze did already optimize performance, it would not stop work on the JS thread (like fetching, updating etc).