On 1) the broker schedular maintains its own file based store, and sends the messages when they are due.
On 2) Have a read of https://issues.apache.org/jira/browse/AMQ-3654?focusedCommentId=13294679&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13294679 On 27 June 2012 04:56, Mohan Nade <mohann...@gmail.com> wrote: > We are using activemq in jdbc master slave configuration. extract pasted > below - > > <persistenceAdapter> > <jdbcPersistenceAdapter dataSource="#mysql-ds" useDatabaseLock="true" > /> > </persistenceAdapter> > > > The messages are posted to queues and consumers are registered to these > queues. > > MessageProducer producer = session.createProducer(destination); > producer.setDeliveryMode(DeliveryMode.PERSISTENT); > > The producer's delivery mode is set to persistent as pasted below. > Some messages are expected to be delivered with delay to be able to execute > them at specified time. > > The questions > 1. the messages are not appearing in ACTIVEMQ_MSGS till they are close to > the execution time. Should the messages not appear when the are "sent"? > > 2. Since we are looking for master slave using jdbc, the ' > useDatabaseLock="true"' is set but even with a minute fluctuation in the db > connection, the master fails and the control is handed over to slave. > We have tried 'lockKeepAlivePeriod="0" lockAcquireSleepInterval="300000"' > Is there a way to let the master wait for a defined time and then only fail? > > regards, > Mohan > > > > > > -- > View this message in context: > http://activemq.2283324.n4.nabble.com/question-about-ActiveMQ-jdbcPersistenceAdapter-and-MasterSlave-tp4653602.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. -- http://fusesource.com http://blog.garytully.com
