Is there a way to use a batch query to manually populate query keys in the cache?

[joshbtay]

I have a use case where I want to get a subset of users' data in a batch, so that I can avoid 20+ parallel queries. However, which users are included in the subset will change frequently with a lot of overlap. Users will probably include or exclude one user from the table at a time. If I use the array of user ids as the query key, it would result in a lot of extra batch queries when theoretically a lot of the users' data already exists in the cache. I'm looking for a way to make a batched initial query that includes all needed users initially, and then future batch queries would only get users that aren't already cached.

Is there a way I could do some logic in the batch queryFn to check if each user already exists in the cache and only query those that i need? If so, is there a way I can set each user's data in the cache when I get a batch of users back?

[TkDodo]

you should be able to do that manually with queryClient.getQueryData and queryClient.setQueryData respectively.