[infinispan-issues] [JBoss JIRA] (ISPN-3792) Optional Cache.putForExternalRead expiration arguments

[Karl von Randow (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015049#comment-13015049 ] 

Karl von Randow commented on ISPN-3792:
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[~dan.berindei] Thanks for your comment. I use an invalidation cache across my cluster, and I use it for caching fragments of HTML where some of those fragments have different retention characteristics. I specify the retention characteristics with the fragment, and I have lots of such fragments, so rather than making an individual cache for each of them I would like to use one cache and simply vary the metadata.

I need to use PFER because it's an invalidation cache. I think PFER is more essential than just Hibernate 2LC; I think it's essential for any invalidation cache.

I can absolutely see your point about more methods in the Cache interface. If it were possible to use a flag to achieve the same result, I would. I think the only thing not achievable by flags is the transaction suspend - which I don't need, but I agree with the sentiment of it, and some of my caches are transactional. 

I would be completely happy with just the method in AdvancedCache.

I do think it's worth considering whether PFER is more important than that when using invalidation though. If you don't use it you pretty quickly get into a dysfunctional cache scenario with each cluster member invalidating the other. It seems that invalidation caches are more likely than not external read caches!

> Optional Cache.putForExternalRead expiration arguments
> ------------------------------------------------------
>
>                 Key: ISPN-3792
>                 URL: https://issues.jboss.org/browse/ISPN-3792
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Core
>            Reporter: Vladimir Dzhuvinov
>            Assignee: Mircea Markus
>            Priority: Optional
>
> BasicCache has optional lifespan and idle time arguments for its put methods, I was hoping to have that for putForExternalRead as well.
> Cheers,
> Vladimir



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