A static connector, having multiple IP addresses, will force the broker to connect to *all* the brokers whose IP addresses are listed in the connector.
It is the client failover connector that, by default, randomly chooses one of the listed IP addresses/brokers (i.e., is more than one is provided). For example, failover:(tcp://localhost:61616,tcp://remotehost:61616) Joe Goto www.ttmsolutions.com for a free ActiveMQ user guide toff wrote: > > Dear activeMQ gurus, > > although I have not yet found an answer, this question is related to > posts: > > (1) > http://www.nabble.com/Network-of-Brokers-configuration-limitation--td11639335s2354.html#a11639335 > > and > > (2) > http://www.nabble.com/Network-of-Brokers-...-td2921710s2354.html#a3114441 > > I am testing the behavior of our in-house implementation of a > content-based routing solution (e.g., pub-sub: that is topics and not > queues) against the performances of an activeMQ network of brokers. My > question is: what is the best (in terms of performances and message > duplicates) configuration I can use for a cyclic network? > > To start simple I am using the following topology: > S1--S3 > | | > S2--S4 > > The configuration file for S1 is therefore: > > <beans > xmlns="http://www.springframework.org/schema/beans"; > xmlns:amq="http://activemq.org/config/1.0"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="http://www.springframework.org/schema/beans > http://www.springframework.org/schema/beans/spring-beans-2.0.xsd > http://activemq.org/config/1.0 > http://activemq.apache.org/schema/activemq-core.xsd > http://activemq.apache.org/camel/schema/spring > http://activemq.apache.org/camel/schema/spring/camel-spring.xsd";> > <bean > class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"/> > <broker xmlns="http://activemq.org/config/1.0"; useJmx="false" > brokerName="node33" persistent="false"> > <transportConnectors> > <transportConnector name="local" uri="tcp://localhost:17701"/> > </transportConnectors> > <networkConnectors> > <networkConnector name="S2" dynamicOnly="true" networkTTL="15" > uri="static://(tcp://node34:17702)"/> > <networkConnector name="S3" dynamicOnly="true" networkTTL="15" > uri="static://(tcp://node35:17703)"/> > </networkConnectors> > </broker> > <commandAgent xmlns="http://activemq.org/config/1.0"/> > </beans> > > In contrast to post (1) and from what I gather from > http://activemq.apache.org/networks-of-brokers.html , I am specifying > multiple network connectors as I want S1 to be connected to both S1 and > S2. If I understand correctly, a static URI with multiple addresses (e.g., > uri="static:(tcp://localhost:61616,tcp://remotehost:61616,tcp://..)") > results in a random connection to just one of the provided addresses. > > Is this the right way to do it? > From the client logs I would definitely say no, as each client receives > multiple (thousands!) copies of the same message. > > Are cyclic topologies supported? Could someone please suggest a > configuration for them? > > Or should I just use hierarchical topologies? > > The latter is the conclusion I infer from post (2), but if there's > somebody knowledgeable about this out there I'd be really happy to have a > final word on this issue. > > Thanks in advance, > > Gio > > > > > > > -- View this message in context: http://www.nabble.com/Cyclic-network-of-brokers%3A-configuration-and-duplicates-tp16834569s2354p16834692.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
