[jira] Updated: (CAY-1462) Refreshing connections in DataPool after DB restart

["Andrus Adamchik (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAY-1462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrus Adamchik updated CAY-1462:
---------------------------------

    Fix Version/s:     (was: 3.1M1)
                   3.1 (final)

> Refreshing connections in DataPool after DB restart
> ---------------------------------------------------
>
>                 Key: CAY-1462
>                 URL: https://issues.apache.org/jira/browse/CAY-1462
>             Project: Cayenne
>          Issue Type: Improvement
>    Affects Versions: 3.1M1
>         Environment: MS SQL
>            Reporter: Evgeny Ryabitskiy
>            Assignee: Evgeny Ryabitskiy
>             Fix For: 3.1 (final)
>
>
> Problem can be simulated after restart of SQL Server.
> So connection in my pool become "dead". Only thing that helps: restart my appllication.
> I wold like to have some mechanism to validate pooled connections and refresh them.
> Possible solutions:
> 1) validate before give connection from pool
> 2) asynchronous thread for validation.
> 3) Generate event for pool on such exceptions (to validate and refresh connections)
> 1- is more reliable but not sure how it will influence on performance...
> 2 - at least something... but can look like some not understandable magic... :)
> 3 - need some code investigation... 

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