Books: Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions; Gregor Hohpe and Bobby Woolf, 2003
Sample chapters: https://manning-content.s3.amazonaws.com/download/f/737b721-0f60-4ba9-bb1f-7a27c4a4532b/chapter1sample.pdf
Links:
- http://www.javacodegeeks.com/2012/11/introduction-to-enterprise-integration-patterns.html
- http://www.slideshare.net/Claudia.Rosu/7-eaipatterns