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https://issues.apache.org/jira/browse/JAMES-2310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16328492#comment-16328492
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ASF GitHub Bot commented on JAMES-2310:
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Github user chikei commented on the issue:
https://github.com/apache/james-project/pull/98
As the DelimiterBasedFrameDecoder from netty (which
LineDelimiterBasedChannelHandlerFactory directly construct) will automatically
use line decoder if we use it directly and with CRLF/LF as delimiter, so only
IMAP and SMTP will actually gain some performance from this changes.
Therefore I only make change to
SwitchableDelimiterBasedFrameDecoder/AllButStartTlsDelimiterChannelHandler in
new commit, if you prefer also make LineDelimiterBasedChannelHandlerFactory
explicitly use line frame decoder I'll make additional changes.
> Use LineBasedFrameDecoder instead of DelimiterBasedFrameDecoder
> ---------------------------------------------------------------
>
> Key: JAMES-2310
> URL: https://issues.apache.org/jira/browse/JAMES-2310
> Project: James Server
> Issue Type: Improvement
> Components: IMAPServer, SMTPServer
> Affects Versions: 3.0.1
> Reporter: TzeKai Lee
> Priority: Major
>
> The LineBasedFrameDecoder is optimized version of DelimiterBasedFrameDecoder
> which provide some good performance gain. The DelimiterBasedFrameDecoder
> already automatically use LineBasedFrameDecoder if we use
> DelimiterBasedFrameDecoder (_but not subclass_) and with CRLF/LF as
> delimiter. However in SMTP and IMAP server we have to subclass it, therefore
> we should directly extend LineBasedFrameDecoder for the performance gain.
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