+-------------+ +-------------+ +--------------+
| Hello World | --> | /dev/fanout | -+-----> | Hello World! |
+-------------+ +-------------+ | +--------------+
| +--------------+
+-----> | Hello World! |
| +--------------+
| +--------------+
+-----> | Hello World! |
| +--------------+
| +--------------+
+-----> | Hello World! |
+--------------+