Multiple useQuery inside defineQuery / granular cache invalidation

[lewebsimple]

Hello,

Let's say I want to implement a shopping cart with items, totals, shipping methods, coupons, etc in its state with a couple of mutations like add / remove item, update quantity, choose shipping method, etc.

Since I don't want to fetch the whole state on every mutation (which might be costly), I'd like to organize it as separate queries inside my main useCart() composable. This would allow me to invalidate parts of the cache on specific requests, i.e. invalidating totals when changing shipping method but keeping items as-is.

Is it possible to have multiple useQuery inside a single defineQuery or should I use multiple defineQuery?

Is this a good approach or am I overthinking this and I should just optimize this on the server side instead ?

[posva]

Yes, you can have multiple use query within one define query!