[infinispan-issues] [JBoss JIRA] (ISPN-7224) Support synchronous get in Spring's cache abstraction

[Mike Noordermeer (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-7224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13388006#comment-13388006 ] 

Mike Noordermeer commented on ISPN-7224:
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It would solve my issue, as we mainly use local (non-replicating/invalidating) caches. Also, I wouldn't want global locking, so I think any locks should only apply to the local node when possible. I our case, we are retrieving and parsing a rather large object from a remote URL, and caching it (incl. passivation). The URL is unique per-user, and users may perform multiple requests at the same time. In that case, I simply want the second request to wait a bit for the first to finish, but if the supplier is invoked twice nothing will break really.

I think a best-effort implementation is all that is needed, and users locking/reusing caches used by the Spring cache abstraction are asking for trouble. I think an atomicity guarantee may be too much, especially in replicated scenarios, but that's not a problem.

> Support synchronous get in Spring's cache abstraction
> -----------------------------------------------------
>
>                 Key: ISPN-7224
>                 URL: https://issues.jboss.org/browse/ISPN-7224
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Spring Integration
>            Reporter: Stéphane Nicoll
>            Assignee: Sebastian Łaskawiec
>            Priority: Critical
>             Fix For: 9.0.0.Beta1, 9.0.0.Final
>
>
> Spring Framework 4.3 has introduced a read-through option See https://jira.spring.io/browse/SPR-9254 for more details. In practice this would require you to compile against 4.3 and implement the additional method. 
> The code is meant to be backward compatible with previous version, as long as you're guarding the new exception in an inner class, see [this implementation for an example|https://github.com/hazelcast/hazelcast/blob/37ba79c4a8d35617c5f6a770eec3705f2852f938/hazelcast-spring/src/main/java/com/hazelcast/spring/cache/HazelcastCache.java#L162-L168]
> Let me know if I can help.



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