On 12 May 2008, at 04:11, Mohammad Reza Selim wrote:
Hi,
It would be helpful for my research if
someone could answer my question.
My (theoretical) scenario is that there are, say, 200 branches of an
enterprise around the world. There are many clients (say 100)
running in each branch. Those clients want a messaging service to
communicate among them. One way is to deploy in each branch an
Active MQ broker
and let clients of a branch connect the broker in its own branch. My
question is how the messages from one client will be routed to another
client. I am interested to know the routing mechanism/algorithm and
it's
complexity. As there are many clients and each can create it's own
queue in the broker, the roting should really be an
issue here (according to my view).
For your information, MSMQ uses an algorithm called "Binary Reliable
Message Routing Algorithm" which creates a least cost spanning tree
among the brokers.
Thanking in advanced.
Mohammad Reza Selim
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ActiveMQ uses a combination of dynamic subscription based routing
(which involves subscription based aggregation to reduce the size of
the routing tables) and network time-to-live across network hops to
reduce the chance of looping within a network. Messages are also
tagged with a brokerId, to prevent them passing through the same
broker twice.
cheers,
Rob
http://open.iona.com/ -Enterprise Open Integration
http://rajdavies.blogspot.com/
