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https://issues.apache.org/jira/browse/CASSANDRA-1311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13496024#comment-13496024
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Matthew Brown edited comment on CASSANDRA-1311 at 11/13/12 7:47 AM:
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Or don't implement triggers with code that runs within Cass. Specify an network 
endpoint to call with a predefined message containing all details of the 
triggering event. Define trigger with connect and read timeouts and retry 
instructions (retry on connect failure, don't retry on read timeout, retry x 
times, random back off between x-y seconds, etc.)
                
      was (Author: fatpanda):
    Or don't implement triggers with code. Specify an network endpoint to call 
with a predefined message containing all details of the triggering event. 
Define trigger with connect and read timeouts and retry instructions (retry on 
connect failure, don't retry on read timeout, retry x times, random back off 
between x-y seconds, etc.)
                  
> Triggers
> --------
>
>                 Key: CASSANDRA-1311
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1311
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Maxim Grinev
>            Assignee: Vijay
>             Fix For: 1.3
>
>         Attachments: HOWTO-PatchAndRunTriggerExample.txt, 
> HOWTO-PatchAndRunTriggerExample-update1.txt, ImplementationDetails.pdf, 
> ImplementationDetails-update1.pdf, trunk-967053.txt, 
> trunk-984391-update1.txt, trunk-984391-update2.txt
>
>
> Asynchronous triggers is a basic mechanism to implement various use cases of 
> asynchronous execution of application code at database side. For example to 
> support indexes and materialized views, online analytics, push-based data 
> propagation.
> Please find the motivation, triggers description and list of applications:
> http://maxgrinev.com/2010/07/23/extending-cassandra-with-asynchronous-triggers/
> An example of using triggers for indexing:
> http://maxgrinev.com/2010/07/23/managing-indexes-in-cassandra-using-async-triggers/
> Implementation details are attached.

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