akka/akka-http

Allow a custom caffeine cache loader

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#4,120 opened on May 9, 2022

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 (1 comment) (0 reactions) (0 assignees)Scala (1,311 stars) (598 forks)batch import
3 - in progresshelp wantedt:caching

Description

I'd love to be able to plugin a specific caffeine implementation rather than just the default. For instance with an oauth token that requires being "refreshed" via an http request. I'd love to be able to use https://github.com/ben-manes/caffeine/wiki/Refresh to do it

Contributor guide

Tech stack
java
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
ScalaAkka HTTP basicsCaffeine cache knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Examine the existing default LfuCache implementation in akka http caching/src/main/scala/akka/http/caching/LfuCache.scala. Consider making the cache loader configurable by introducing a parameter or factory method. Review the Caffeine refresh documentation at https://github.com/ben manes/caffeine/wiki/Refresh. Look at how the cache is used in the codebase to ensure backward compatibility.