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https://issues.apache.org/jira/browse/OAK-775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13631676#comment-13631676
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Thomas Mueller commented on OAK-775:
------------------------------------

As an alternative to persisting the events, would it be possible to keep the 
events in memory, and deliver them after a change was committed?

I understand there would be limitations: only local events could be supported. 
And the system could run out of memory, for slow observation listeners or huge 
transactions (the same as for Jackrabbit 2.x). But  events wouldn't have to be 
persisted.
                
> Implement backward compatible observation
> -----------------------------------------
>
>                 Key: OAK-775
>                 URL: https://issues.apache.org/jira/browse/OAK-775
>             Project: Jackrabbit Oak
>          Issue Type: Sub-task
>          Components: core, jcr
>            Reporter: Michael Dürig
>         Attachments: OAK-775.patch
>
>
> As [discussed | http://markmail.org/message/6bqycmx6vbq7m25c] we might want 
> look into implementing an alternative approach to observation, which trades 
> some scalability for improved backward compatibility. 

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