[Content]:Use specific examples to illustrate when Stores should be used instead of signals.

[huangsheng7271]

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/concepts/stores.mdx

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The document says that Stores are very useful when handling complex states, but I feel that signals can also handle it. The document only mentions the usage of Stores. I think specific examples should be used to illustrate in which scenarios using Stores is a better choice than signals.

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The document says that Stores are very useful when handling complex states, but I feel that signals can also handle it. The document only mentions the usage of Stores. I think specific examples should be used to illustrate in which scenarios using Stores is a better choice than signals.

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No response

[brenelz]

I feel almost as soon as you have nested objects you'd want to use a store, but not sure what others mental model for using stores vs signals is

[atilafassina]

@brenelz

I feel almost as soon as you have nested objects you'd want to use a store, but not sure what others mental model for using stores vs signals is

Does it need to be nested? Any complex type would do (arrays or objects) nested or not.
If your state has more than 1 value, it's a store.

e.g.:

const [user, setUser] = createSignal("brenelz")

vs

const [user, setUser] = createStore( { id: "rec-123", handler: "brenelz" })

suggested action item

• Add a note that Stores are recommended for any kind of complex type objects

[brenelz]

@atilafassina yeah stores work in that case too but if its just one flattened object I might still use a signal. Not sure if thats ideal tho

[atilafassina]

@brenelz it depends on how it's updated and where.

the problem of having an object or array in a signal is that every time you update a single value, the whole thing gets recreated, so we lose fine-grained reactivity.

maybe in a few use-cases that's ok, but I find that more often than not, I want my updates to be as granular as possible.

[brenelz]

@atilafassina yeah thats a fair point. I should probably use stores more often then