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From Bruce Snyder <>
Subject Re: Clustering for HA
Date Wed, 25 Mar 2009 13:17:13 GMT
On Wed, Mar 25, 2009 at 1:19 AM, Erik Drolshammer <> wrote:

> I don't want to use JDBC if I can avoid it. I thought I _had_ to after
> reading
> When I removed the JDBC-element and thus used KahaDB things seems to be
> working again. Strange that the derbydb didn't work at all. (One message
> dispatch per minute instead of 500 per second or so normally.)

This is common when Derby is run inside the same JVM as ActiveMQ
because Derby is very hard on the garbage collector. We recommend
splitting Derby into it's own JVM if you want to use it.

> Looks promising. Any idea when it will be released?

The AMQ message store was released when ActiveMQ 5.0 came out and it
is the default persistent mechanism in the 5.x version. It makes use
of Kaha as the message reference store. I suggest trying the AMQ
message store as it is incredibly fast:

> Thanks for you help. :)
> FYI;
> When we have verified our setup properly I want to create a jira issue
> suggesting documentation extensions. Until then, I use
> as scratch area.

Great, let us know if there's anything you'd like to contribute to the

perl -e 'print unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"

Apache ActiveMQ -
Apache Camel -
Apache ServiceMix -


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