Mule is the most widely used open source ESB-with millions of downloads-providing an alternative to expensive commercial options. Mule in Action is acomprehensive tutorial designed for working Java developers. This authoritativebook explores the architecture and the main features of version Mule 2 throughnumerous running examples. It starts with a quick overview of ESB technologyand a bit of Mule history-including the key changes between Mule 1.x...