java - Rabbit MQ - why my setup not provide messages to all clients? -



java - Rabbit MQ - why my setup not provide messages to all clients? -

i have code in jruby:

class receiver def initialize(channel_id) @channel_id = channel_id mill = connectionfactory.new factory.sethost("localhost") connection = factory.newconnection @channel = connection.createchannel @channel.exchangedeclare(exchange_name, "direct"); @channel.queuedeclare(queue_name, true, false, false, nil) @channel.queuebind(queue_name, exchange_name, routing_key) @consumer = queueingconsumer.new(@channel); @channel.basicconsume(queue_name, true, @consumer); end def receive string.from_java_bytes @consumer.nextdelivery.getbody end private def queue_name @channel_id end def exchange_name @channel_id end def routing_key @channel_id end end

this code responsible getting messages in architecture. however, when have ie. 2 instances of receiver same channel_id (which exchange name, , route key) when send message exchange 1 message goes 1 receiver, 1 another. why, wrong?

the question why want have acted on 2 agents simultaneously subscribed single queue? in rabbitmq, multiple agents can subscribed 1 queue same thing , redundancy/load balancing purposes. random agent picks message queue , acks clears beingness consumed else.

usually queue implies 1 action , agents listening equivalent , can pick on message. if want have message go 1 place broadcasted multiple agents, preferable utilize fanout exchange , have each agent hear on separate queue.

so think of each queue if doing 1 thing. behavior describing intended.

please see this tutorial details on setting fanout exchange , different exchanges do.

java ruby jruby rabbitmq

Comments

Post a Comment

Popular posts from this blog

web services - java.lang.NoClassDefFoundError: Could not initialize class net.sf.cglib.proxy.Enhancer -

web services - java.lang.NoClassDefFoundError: Could not initialize class net.sf.cglib.proxy.Enhancer - when trying request rest service @ time of response getting exception.. feb 21, 2013 2:34:49 pm com.sun.jersey.spi.container.containerresponse mapmappablecontainerexception severe: exception contained within mappablecontainerexception not mapped response, re-throwing http container java.lang.noclassdeffounderror: not initialize class net.sf.cglib.proxy.enhancer @ org.hibernate.proxy.pojo.cglib.cgliblazyinitializer.getproxyfactory(cgliblazyinitializer.java:117) @ org.hibernate.proxy.pojo.cglib.cglibproxyfactory.postinstantiate(cglibproxyfactory.java:43) @ org.hibernate.tuple.entity.pojoentitytuplizer.buildproxyfactory(pojoentitytuplizer.java:162) @ org.hibernate.tuple.entity.abstractentitytuplizer.<init>(abstractentitytuplizer.java:135) @ org.hibernate.tuple.entity.pojoentitytuplizer.<init>(pojoentitytuplizer.java:55) @ org.hibernate.tuple.e...
Read more

Accessing MATLAB's unicode strings from C -

Accessing MATLAB's unicode strings from C - how can access underlying unicode info of matlab strings through matlab engine or mex c interfaces? here's example. let's set unicode characters in utf-8 encoded file test.txt, read as fid=fopen('test.txt','r','l','utf-8'); s=fscanf(fid, '%s') in matlab. now if first feature('defaultcharacterset', 'utf-8') , c engevalstring(ep, "s") , output text file utf-8. proves matlab stores unicode internally. if mxarraytostring(enggetvariable(ep, "s")) , unicode2native(s, 'latin-1') give me in matlab: non-latin-1 characters replaced character code 26. need getting access underlying unicode info c string in unicode format (utf-8, utf-16, etc.), , preserving non-latin-1 characters. is possible? my platform os x, matlab r2012b. addendum: documentation explicitly states "[mxarraytostring()] supports multibyte encoded characters...
Read more

javascript - mongodb won't find my schema method in nested container -

javascript - mongodb won't find my schema method in nested container - i trying access method of schema stored within mixed container. here situation : have cases model can many different things, have schema each of these things stored in "casecontent" mixed property. var caseschema = mongoose.schema({ casecontent : {}, object : {type:string, default : "null"}, collision : {type : boolean, default : false} }); the casecontent property filled model of 1 of schemas, 1 exemple : var treeschema = new mongoose.schema({ applecount : {type : number, default : 3} }); treeschema.methods.dostuff = function (data) { console.log('hey, listen'); homecoming true; }; then, want utilize method of schema original container : caseschema.methods.dostuff = function (data) { if (this.casecontent.dostuff !== undefined) { this.casecontent.dostuff(); console.log('it worked'); } else { ...
Read more