Request for Caching Feedback

[BobaFetters]

Hello all! The Apollo iOS Team has plans to do a significant rewrite of the caching system used in the library. While this feature is still a little ways off, the first step in this process is to gather feedback from you, the users of the library, about how you use caching in your applications, how you would like to use caching, and what features that entails.

The current high level features we have planned are:

• Time to live (TTL) support on a per object and per field basis
• Cache Eviction on a per object and per field basis
• Improved faceted search
• Cascading deletions

Your feedback is invaluable to us, so please share your thoughts with us. Once we feel we have gathered enough feedback we will take some time to review and discuss and then move into an RFC with more technical details which will be another opportunity for you to collaborate with us and share your feedback.

Thank you in advance for all the feedback!

[Reevn]

The high level features mentioned in the OP are exactly what we are looking for, exciting! Time to live support is without a doubt the most important one I can think of.

There are some other use cases I've encountered in the past which had no good solution. Some things on my wish list:

• Better API to debug/observe cache changes during development to see if everything is cached as expected. Right now one has to use an SQLite (or other persistent) store in order to inspect how data is written to the cache
• Ability to chain caches like in Apollo Kotlin. Even better would be more fine-grained control where one can selectively decide which operation should also be persisted to the disk cache vs in-memory cache
• Ability to redirect (or pre-warm?) cache hits when query A already returned data that query B needs. Classical example is a query that gets a list of items and a second query gets exactly one item and that one item is already in the cache from the list query

[BobaFetters]

Closing this to move forward into RFC phase

[github-actions]

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