You may be in a situation where you need to send messages reliably to an endpoint. There are couple of ways you can achieve that. WSO2 ESB provides store/forward pattern with a higher level of reliability and error recovery mechanisms. This post aggregate some of the comprehensive articles into a single piece.
- http://wso2.com/library/articles/2011/10/implementing-store-forward-messaging-patterns-wso2esb-part-1/
- http://wso2.com/library/articles/2011/10/implementing-store-forward-messaging-patterns-wso2esb-part-1/
- http://techfeast-hiranya.blogspot.de/2012/01/wso2-esb-tips-tricks-08-message-stores.html
- http://charith.wickramaarachchi.org/2012/05/another-message-redelivery-pattern-with.html