Rxjava: Request: Add operator to cache only onSuccess value from Single
Basically like Single#cache but that would re-subscribe to source if it previously terminated with onError.
Use case: caching network responses in memory. Single#cache is not suitable for this purpose because we generally don't want to cache network errors but instead retry the request on subsequent subscriptions.
This is what we currently use https://gist.github.com/technoir42/93cf3647aa869dde498b0afe663c83ea (based upon Single#cache).
technoir42
All 7 comments
Such behavior seems to be peculiar to your use case and you did a good job implementing a solution for it locally. I'm not convinced the operator should be added to RxJava though.
akarnokd
on 2 Mar 2018
I was asked to publish this operator somewhere. @akarnokd would it be a worthwhile addition to RxJava2Extensions? I believe this use case is actually a pretty common on Android.
technoir42
on 13 Apr 2018
Publish it in your own library.
akarnokd
on 13 Apr 2018
This sounds exactly like what I'm currently looking for. @technoir42 it looks like your gist got deleted? :(
halfhp
on 11 Feb 2019
@halfhp I've updated the link in the description.
technoir42
on 11 Feb 2019
Such behavior seems to be peculiar to your use case and you did a good job implementing a solution for it locally. I'm not convinced the operator should be added to RxJava though.
Can you explain why _you are not conviced_?
Rx offers operators for pretty much everything, why exclude this one? There are definitely use-cases for it...
grAPPfruit
on 5 Dec 2019
This operator would be very useful!
beloglazovme
on 2 Dec 2020
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Most helpful comment
Such behavior seems to be peculiar to your use case and you did a good job implementing a solution for it locally. I'm not convinced the operator should be added to RxJava though.