[infinispan-issues] [JBoss JIRA] (ISPN-686) JdbcStringBasedCacheStore loads previous data from store before an insert

[Tristan Tarrant (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tristan Tarrant updated ISPN-686:
---------------------------------

              Status: Pull Request Sent  (was: Open)
    Git Pull Request: https://github.com/infinispan/infinispan/pull/1269  (was: https://github.com/infinispan/infinispan/pull/1269)

    
> JdbcStringBasedCacheStore loads previous data from store before an insert
> -------------------------------------------------------------------------
>
>                 Key: ISPN-686
>                 URL: https://issues.jboss.org/browse/ISPN-686
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Loaders and Stores
>    Affects Versions: 4.0.0.Final, 4.1.0.Final
>            Reporter: Sanne Grinovero
>            Assignee: Thomas Fromm
>             Fix For: 5.2.0.Alpha3, 5.2.0.Final
>
>
> The JdbcStringBasedCacheStore implementation loads the previous data on an insert to find out if it should generate an UPDATE or INSERT statement, while it would perform much better to just verify if the primary key exists.
> On top of this, some databases provide ways to avoid the need to check at all, like MySQL's " INSERT ... ON DUPLICATE KEY UPDATE"
> [http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html]

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