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https://issues.apache.org/jira/browse/AMQ-6148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133467#comment-15133467
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Justin Bertram commented on AMQ-6148:
-------------------------------------

That's correct.  ActiveMQ Artemis is not a plugin to ActiveMQ but a broker in 
and of itself.  Artemis supports clustering.  Most of the same kinds of 
clustering features that ActiveMQ 5.x supports are also supported in Artemis so 
if you want a huge cluster then you can certainly have it with Artemis.

> When use LDAP auth, Activemq should not always connect to ldap service to do 
> authentication
> -------------------------------------------------------------------------------------------
>
>                 Key: AMQ-6148
>                 URL: https://issues.apache.org/jira/browse/AMQ-6148
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 5.11.1
>            Reporter: JIE CHEN
>            Priority: Critical
>
> I am using LDAP service to do authentication for ActiveMQ, and I found 
> everytime ActiveMQ servers try to establish a connection between ActiveMQ 
> client, the ActiveMQ server will create a connection to LDAP server to do 
> authentication. That's is not good, think about there are thousands of 
> ActiveMQ clients are trying to connect to ActiveMQ servers, the ActiveMQ 
> servers will need to create thousands of connections to LDAP servers. And 
> moreover it is not reliable as well because the connection between LDAP 
> servers and ActiveMQ servers could be broken sometimes. We need something 
> similar as Cached LDAP Authorization Module. It is more reasonable that the 
> ActiveMQ will cache the ldap account credential in local memory and refresh 
> in certain interval.



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