限制由 Spring JmsListener 创建的 JMS 连接

Question

I have total 4 JmsListener defined in my application. I am using DefaultMessageListenerContainerFactory and have concurrency set to 25-75 . I see my application is creating lot of JMS connections and exhausting the limit. Is there a way I can limit this connection?

JmsListenerContainerFactory<DefaultMessageListenerContainer> createJmsListenerContainerFactory(
        ConnectionFactory cf,DefaultJmsListenerContainerFactoryConfigurer configurer) {
    DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory();
    configurer.configure(factory, cf);
    factory.setSessionTransacted(true);
    factory.setSessionAcknowledgeMode(2);
    factory.setBackOff(new FixedBackOff());
    return factory; 
} 

Here is how I use it in listener.

@Bean(name = "containerFactory")
public MQConnectionFactory mqConnectionFactory(DefaultJmsListenerContainerFactoryConfigurer configurer) throws NamingException {
    //call to createJmsListenerContainerFactory()
}
   
@JmsListener(destination = "queue1", containerFactory = "containerFactory", concurrency = "25-75")

I have my 6 instances of my application running. I need to restrict JMS connection limit per instance.

Answer 1

Wrap your connection factory in a SingleConnectionFactory and they will all share the same connection.