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From "Mck SembWever (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-5883) Switch to Logback
Date Wed, 23 Oct 2013 06:47:43 GMT


Mck SembWever commented on CASSANDRA-5883:

No, most people don't log that much. But it's nice to know that you can, if you have to, turn
all loggers to DEBUG, or even TRACE, in production without hurting performance. With old-log4j
and logback this often isn't possible.

The performance isn't an across the board improvement, as far as i've understood it, but just
an improvement that comes from removing all the little contentions from synchronised blocks.
I can imagine that this appeals to the c* community, even if it's of little practical meaning
for normal production c*  

Log4j2 also provides the auto-reload of configuration files. Other features it offers is at

> Switch to Logback
> -----------------
>                 Key: CASSANDRA-5883
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core, Tools
>            Reporter: Jonathan Ellis
>            Assignee: Dave Brosius
>            Priority: Minor
>             Fix For: 2.1
>         Attachments: 0001-Additional-migration-to-logback.patch, 5883-1.txt, 5883-additional1.txt,
> Logback has a number of advantages over log4j, and switching will be straightforward
since we are already using the slf4j translation layer:

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