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Date: Thu, 12 Sep 2013 17:30:52 +0000 (UTC)
From: "Timothy Bish (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Message-ID: <JIRA.12668086.1378920532366.123676.1379007052383@arcas>
In-Reply-To: <JIRA.12668086.1378920532366@arcas>
References: <JIRA.12668086.1378920532366@arcas>
Subject: [jira] [Commented] (AMQ-4721) Update slf4j library to latest
 version (1.7.5 currently)
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    [ https://issues.apache.org/jira/browse/AMQ-4721?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D137656=
53#comment-13765653 ]=20

Timothy Bish commented on AMQ-4721:
-----------------------------------

So far it looks good, lot of changes to review.  One thing we might want to=
 do is split the versions configure different slf4j api and impl versions l=
ike camel does. =20
               =20
> Update slf4j library to latest version (1.7.5 currently)
> --------------------------------------------------------
>
>                 Key: AMQ-4721
>                 URL: https://issues.apache.org/jira/browse/AMQ-4721
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Broker
>    Affects Versions: 5.8.0
>            Reporter: Timothy Bish
>            Assignee: Jean-Baptiste Onofr=C3=A9
>            Priority: Minor
>             Fix For: 5.9.0
>
>         Attachments: AMQ-4721.patch
>
>
> We are currently on an older release v1.6.6 and should move on to the lat=
est v1.7.5 to pick up performance improvements etc. =20
> From the changelog:
> "performance improvements: The logger factories in most SLF4J modules nam=
ely in jcl-over-slf4j, log4j-over-slf4j, slf4j-jcl, slf4j-jdk14, slf4j-log4=
j12, and slf4j-simple now use a ConcurrentHashMap instead of a regular Hash=
Map to cache logger instances. This change significantly improves logger re=
trieval times at the cost of some memory overhead. This improvement was req=
uested in bug #298 by Taras Tielkes who also provided the relevant patch.=
=20
> Given the significance of these performance improvements, users are highl=
y encouraged to migrate to SLF4J version 1.7.5 or later. "

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