[jbosscache-issues] [JBoss JIRA] Resolved: (JBCACHE-1471) Slow cache.get for fqn with a large number of key/value entries.

[Manik Surtani (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBCACHE-1471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manik Surtani resolved JBCACHE-1471.
------------------------------------

    Fix Version/s: 3.1.0.GA
       Resolution: Done


Thanks, the patch looks good.


> Slow cache.get for fqn with a large number of key/value entries.
> ----------------------------------------------------------------
>
>                 Key: JBCACHE-1471
>                 URL: https://jira.jboss.org/jira/browse/JBCACHE-1471
>             Project: JBoss Cache
>          Issue Type: Patch
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 3.0.2.GA
>         Environment: Encountered when using a TcpDelegatingCacheLoader
>            Reporter: Alex Kluge
>            Assignee: Manik Surtani
>            Priority: Minor
>             Fix For: 3.1.0.GA
>
>         Attachments: containsKeyDirect.patch
>
>
>   Stress tests of JBoss Cache with a far cache, and a large number (10K+) of key/value pairs in a node
>  did not perform as well as I would expect.  On a read of the cache, cache.get(fqn, key), a large amount
>  of time was spent determining whether the data needed to be loaded from the far cache.
>   The big time sink is the n. getKeysDirect() call in org.jboss.cache.interceptors.CacheLoaderInterceptor,
>  which copies the keyset. As expected, introducing a containsKeyDirect(K key) method to NodeSPI, and
>  implementation classes where needed, allowed for a significant speedup when the new method is used
>  in place of n.getKeysDirect().contains(key). If this is a reasonable path, I have attached the patch file to this
>  issue.

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