Before we talk about the failover message forwarding processor, it’s better to understand the big picture of the concepts and use cases. The Scheduled Failover Message Forwarding Processor is part of the bigger picture of the message store and message processor . Message Store Message Processor. WSO2 ESB’s Message-stores and Message-processors are used to store incoming messages and then deliver them to a particular backend with added Quality of Services (QoS), such as throttling and guaranteed delivery. The basic advantage of the MSMP is that it allows you to send messages reliably to a backend service. These messages can be stored in a different reliable storage such as JMS, JDBC message stores. The MSMP powered by three basic components: 1. Store Mediator. The Store mediator is the synapse mediator and can be used to store messages in the message store. 2. Message Store. A message store is storage in the ESB for messages. The WSO2 ESB comes with four t...