Support other effects beside `Future` for async caches

[wahtique]

Hi !

Everything is in the title I think : would it be possible to add the possibility to support other effects types for async caches than Future ? At work we are commited to the typelevel stack and macking scaffeine caches transition between Future and IO is very boilerplate-ish. I imagine it is the same with ZIO or Monix users.

This could be done either thru

• tagless final : not sure how this would work work the underlying Java API but more generic than
• effect system specific modules which may take some work to maintain

If you think this an accceptable evolution for the lib I'm ready to improve my FOSS karma by doing the PR ( for IO only since it's the only one I am familiar with ^^ )

[ben-manes]

fyi, jcouyang/jujiu might be helpful to review.

[blemale]

Hi @wahtique! I'm sorry I have missed your message, so long story short: this project is in maintenance mode as I'm not using it at work, I'm in fact not even using Scala anymore. I have a friend that looked some time ago to add support for effect system but it has not landed. So I would advise you to either:

• Fork the project and add effect system support
• Build an external module to add support for IO on top of the existing library
• Use a more recent library like the one above