Some POCs of data routing service implementing on MSA.
+-----------+ +-----------+
| | | |
| ServiceA <----> Router <-----> Controller
| | | ^ | ^
+-----------+ +-----|-----+ |
| |
| +-----|-----+ +-----------+
| | v | | |
+---------> Router <----> ServiceB |
| | | |
+-----------+ +-----------+