Ability to manually clear a cache

[timcosta]

Hello!

Thanks for this great library. It's been super helpful and works well.

I'm wondering if its going to be possible ever to trigger a manual cache clear. Say we are loading a user profile on page load. That data doesn't change often, and can be cached. If a user updates their profile though, we will need the ability to clear the cached response in order to trigger a refetch.

Hope this makes sense as a use case, and thanks again!

[quisido]

There are no plans for it currently. I think with concurrent React hopefully so close to launch that they will cover this use case. Concurrent React will likely render this package obsolete.

While I don't intend to do it myself given the unknown of when concurrent React will be publicly available, I would welcome a PR that handles this.

[ryanberckmans]

How does this look?

master...ryanberckmans:f11e2b43a57bb314f7aa45aae56acf3f45d3076c

[AidanNichol]

I've just been playing with this and after some false attempts I came up with a simple to implement solution. I added clear, a function to remove this entry from the cache (copied from the setTimeout function), to the metadata. So in those cases where I need this function I just need to request the metadata and I'm sorted.
I'll look at producing a PR.

[AidanNichol]

How does this look?

master...ryanberckmans:f11e2b43a57bb314f7aa45aae56acf3f45d3076c

How would you use this? I made a normal call to get my data and then wanted to clear the cache because I've done an update. I found that if I tried a second call of useFetch with the flag to clear the cache it would be in some conditional part of my code and so fails one of the rules of hooks.

[ryanberckmans]

Aidan, I wrap calls to useFetch in an anonymous function that passes evict: true for only the first invocation of useFetch. The same anonymous function returns a read() interface similar to relay so that I can kick off useFetch requests in parallel with rendering, ie. before passing them into child components. The rules of hooks eslint rule failed for me too. I think it's because of the name "useFetch".

…

On Thu, Jun 18, 2020, 8:36 AM Aidan Nichol ***@***.***> wrote: How does this look? master...ryanberckmans:f11e2b43a57bb314f7aa45aae56acf3f45d3076c <master...ryanberckmans:f11e2b43a57bb314f7aa45aae56acf3f45d3076c> How would you use this? I made make a normal call to get my data and then wanted to clear the cache because I've done an update. I found that if I tried a second call of useFetch with the flag to clear the cache it would be in some conditional part of my code and so fails one of the rules of hooks. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#25 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACJCPA3QM25ZFHIAHBNZ33RXIJ65ANCNFSM4JNUYWXA> .