spring-integration : switch on failover to IBM MQ queue

Question

We have a situation where we need to implement functionality to handle below scenarios(using IBM MQ and Spring Integration):

1. If a JMS queue fails intraday application should auto connect to another defined queue without loss of messages.

2. Dynamically alter a queue configuration when the application is running, or even if we need to restart any unsent messages should not be lost.

Kindly provide your view on how to implement a good design for handling these scenarios as we are new to using spring integration.

Answer 1

You should declare one more JMS Outbound Channel Adapter for that second queue and have it as a second subscriber (with order=2 ) to the same direct channel. That channel must be configured with load-balancer="none" . This way if first handler fails to process message, it will be delivered to the second subscriber and so on.