Abimael-
ActiveMQ does not permanently store messages on its one. KahaDB will
create a full-sized db-1.log (default is 32Mb) at start-up. It stores
messages in there, and as messages are created and consumed, it will
create new db-*.log files as needed, and delete db-*.log files as
messages are consumed. For your test, try running 10,000+ of your test
messages. You should see a db-2.log file created and the db-1.log file
deleted once all the messages are consumed.
See the SystemUsage configuration options for limiting the disk space
that you want to allow AMQ to use. A good rule of thumb is space for at
least 3-4 days worth of data (depending on your messaging pattern).
Hope this helps!
Matt Pavlovich
On 1/24/12 1:32 PM, Abimael wrote:
Hi
Perhaps my question is simple . I tried to look for information on ApacheMQ
documentaion but I 'm not able to do.
Scenario :
DurableTopic configured via webadmin;
Persistent Messages sent by Producer with no time to live defined.
Consumer consumer messages deliveried assync.
I noticed that the Kahadb files does not change . I mean , the Kahadb files
does not decrease.
I guess that the messages are kept there forever , even they are consumer
by the Consumer.
But I could not check such "guess" in the documentation.
I understand that Persistent messages are kept to avoid be lost by a broker
outage , but I do not know if they are kept AFTER consumer consumes .
I am planning some disk space and I do not know if the space will increase
indefinitely . I guess it will not, but I want to be sure and understand
"how" it is managed.
Thanks in advance
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