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From "Ben Manes (JIRA)" <>
Subject [jira] [Commented] (CAMEL-8602) Java 8: ConcurrentLinkedHashMap -> Caffeine
Date Wed, 23 Mar 2016 17:18:25 GMT


Ben Manes commented on CAMEL-8602:

Let me know if there is an issue on my side to fix. I do provide OSGi manifests and have a
[test case|]
to validate it.

> Java 8: ConcurrentLinkedHashMap -> Caffeine
> -------------------------------------------
>                 Key: CAMEL-8602
>                 URL:
>             Project: Camel
>          Issue Type: Task
>          Components: camel-core
>            Reporter: Ben Manes
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 2.18.0
> When Camel transitions to requiring Java 8, please upgrade to Caffeine. The performance
should be relatively the same. The per-instance memory usage should be smaller and Camel may
decide to opt-in to use some of the additional features. The only drawback is that the jar
size is larger due to code generation, though that may be trimmed over time and usually is
not a concern for server-side applications.
> ConcurrentLinkedHashMap changes will continue to be minimal, even more so now, and driven
by requests from Java 6 users unable to upgrade. Caffeine is ideally the upgrade path for
Guava cache users too, which due to Android cannot be significantly modified.
> Caffeine:
> Benchmarks:
> ConcurrentLinkedHashMap:

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