Enterprise Integration Patterns: Content-Based Router, Splitter, Aggregator, and More
Study the pattern language that makes Camel especially powerful for non-trivial integration design.
Inside this chapter
- Why Enterprise Integration Patterns Matter
- Content-Based Router
- Splitter and Aggregator
- Pattern Thinking Is a Major Skill Upgrade
Series navigation
Study the chapters in order for the clearest path from Camel basics to advanced route design and production operations. Use the navigation at the bottom of each page to move through the full series.
Why Enterprise Integration Patterns Matter
Apache Camel is strongly influenced by Enterprise Integration Patterns, or EIPs. These patterns describe common solutions to messaging and integration problems. Learning them helps developers design routes at a higher architectural level instead of writing ad hoc glue code everywhere.
Content-Based Router
from("direct:orders")
.choice()
.when(header("priority").isEqualTo("HIGH"))
.to("jms:queue:priorityOrders")
.otherwise()
.to("jms:queue:normalOrders");Splitter and Aggregator
A splitter breaks one message into many smaller messages. An aggregator recombines multiple related messages into one result. These patterns are common in batch decomposition, order item processing, multi-record feeds, and workflow coordination.
Pattern Thinking Is a Major Skill Upgrade
Beginners often think in terms of individual lines of route code. Intermediate and advanced Camel users think in patterns: filter, multicast, split, aggregate, route, retry, compensate. That shift is important.