If directed graphs are needed instead of the simple linear streams described above, two features are relevant. First, named destinations may be used as a way to combine the output from multiple streams or for multiple consumers to share the output from a single stream. This can be done using the DSL syntax http > mydestination or mydestination > log. To learn more, refer to then section on Named Destinations. Second, you may need to determine the output channel of a stream based on some information that is only known at runtime. To learn about such content-based routing, refer to the Dynamic Router section.