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From "Tellier Benoit (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAILBOX-296) Improve Expunges over Cassandra
Date Thu, 18 May 2017 11:50:04 GMT
Tellier Benoit created MAILBOX-296:

             Summary: Improve Expunges over Cassandra
                 Key: MAILBOX-296
                 URL: https://issues.apache.org/jira/browse/MAILBOX-296
             Project: James Mailbox
          Issue Type: Improvement
            Reporter: Tellier Benoit

Large expunges are today failing on Cassandra.

And overall performance does not seem good.

We should pay attention to: 
 - Limiting the number of concurrent queries to avoid killing the server
 - Prepare select statements in MessageDAO
 - Not use IN clause in MessageDAO
 - Use limit on incoming IDs on MessageDAO reads
 - Better chaining of future

We will validate performance gains with gatling-imap tests.

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