Re: Difference between kahaPersistenceAdapter and kahaDB

2010-11-11 Thread Gary Tully
to have a guarantee that a sent message is actually on disk there needs to be a disk sync. KahaDB does this by default, the KahaPersistenceAdapter does not, by default it just does it on a transaction boundary. So KahaDB behaves like KahaPersistenceAdapter when enableJournalDiskSyncs="false" On

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-11-11 Thread carlo.bonamico
Thanks Gary... You suggest using KahaDB over KahaPersistenceAdapter because of more development activity and support. However, I have significant performance issues with KahaDB. From my tests, KahaBD performance is heavily dependent on the maximum sync rate of the filesystem. KahaPersistenceAda

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-11-11 Thread Gary Tully
Any of the file based stores can be used in the shared-file-system master slave setup. Use KahaDB or the AMQPersistenceAdapter, the kahaPersistenceAdapter is old hat at this stage. On 11 November 2010 08:16, carlo.bonamico wrote: > > Hi Gary, >  thank you again for your answers... also reading th

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-11-11 Thread carlo.bonamico
Hi Gary, thank you again for your answers... also reading the pre-release of ActiveMQ in Action was helpful. Just a final question: is kahaPersistenceAdapter safe for persistent queues? can it be used in a master-slave setup? -- View this message in context: http://activemq.2283324.n4.nabble.c

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-10-26 Thread Gary Tully
have a read through http://activemq.apache.org/persistence.html that shows how a persistence store is configured and some of the different options available. Think it will answer all your questions. On 26 October 2010 09:37, carlo.bonamico wrote: > > Thanks for you answer! But then what I am not

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-10-26 Thread carlo.bonamico
Thanks for you answer! But then what I am not sure of is: -is kahaPersistenceAdapter the same as using AMQ Message Store? -does choosing a kahaPersistenceAdapter changes things with respect to using KahaDB in the configuration? -- View this message in context: http://activemq.2283324.n4.nabbl

Re: Difference between kahaPersistenceAdapter and kahaDB

2010-10-26 Thread Gary Tully
KahaDB is a new implementation, the latest incarnation. KahaDB uses less file file descriptors and provides faster recovery than its predecessor, the AMQ message store. On 25 October 2010 16:45, carlo.bonamico wrote: > > I have seen various configurations in both the ActiveMQ website and mailing