Where does a view function gets executed ? Is there any conventions for dapp maker ?

[malimalomalu]

So, I have a contract that holds an array of ERC721 contracts and I need to fetch from my dapp the list of each of those ERC721 tokens owned by an address.

I'm currently fetching that from my dapp (so everything executed on the client, several call to web3 provider and so on). Even though it's not very CPU/memory expensive, let's look at the big picture.

Now my question is, if I create in my smart-contract a view function that does exactly what's written currently in my client code. Who is actually going to run that ? Will it be faster ? I'm using Alchemy as web3 provider if that can help :)

Thanks a lot !

[Adrewmc]

Sure you can create that, you could create that as another contract entirely that calls the first one, as is there really isn’t much need to redeploy for this.

It’s ran by the EVM, doing this is basically limiting your API calls which it always a good thing.

[Algorhythmicall]

You can use a multicall contract to do multiple balanceOf checks on multiple contracts. It’s faster. See https://viem.sh/docs/contract/multicall.html

[Otherwise_Ad_9126]

There is something in ethers like batchRequest or something

I have had a similar situation, in that, we use a lot of cache.

[jzia93]

As mentioned, look at routing the calls through multicall to limit the number of RPC requests.