I suggest looking at replacing the broker for generating the messages with simple Camel routes using the timer or quartz endpoints. Clustering scheduled jobs is always a challenge. If you run Camel in a Karaf-based container (ServiceMix, JBoss Fuse, etc) you can setup the containers to be highly available using the same type of shared lock as you do ActiveMQ (JDBC or file-based). If the primary container goes down, the secondary starts up and then the Camel routes in that container would be generating the scheduled events.
-Matt On Sep 2, 2014, at 4:37 AM, Willem van Doesburg <w.vandoesb...@eijkelkamp.com> wrote: > > Hi, > > We are using ActiveMQ in several of our production systems. It works very > well, but we would like to make the broker fail-over, for when the broker > application (which runs seperately of the consumers on other machines) > crashes. > > To do this, we are already able to create a JDBC-based or a filesystem-based > high-availability store, so that our queue is always kept in the air by the > two brokers. However, that is not what we want, we want the high-availability > as well for all scheduled messages. We rely heavily on scheduled messages for > quite some functionalities (sending e-mail, doing some tasks just before > other hardware performs tasks). We noticed that the scheduled messages are > not placed in our queue, but always stored together with the broker, which > makes it impossible to make the broker fail-over. Currently we really need to > restart that crashed broker because it holds scheduled messages, so we rely > on brokers specifically instead of a queue which is managed by some > restartable independent brokers. > > How can we best resolve this? > > Best regards, > -- Willem van Doesburg > > > Met vriendelijke groet, / Kind regards, > > Willem van Doesburg > Information Architect, Project Leader > > > Eijkelkamp Agrisearch Equipment > > T +31 (0)313 800 981 > > I www.eijkelkamp.com > > > Please consider the environment before printing this e-mail. > > Help supply 100.000 people with safe drinking water. How? Support The Water > Entrepreneur! > > > >
