First run the caching server. It is in python so it's easy, just make sure you have the dependencies installed with:
pip install requests flaskThen run python3 main.py
Then you have to run the routing server, open the solution, compile the file to an exe and run it.
Finally, launch the java client, use maven with the target javafx:run.
This application is composed of three elements, these elements are differentiated in order to achieve less responsability for each one.
The Caching server is only responsible to retrieve the responses and store them in memory, keeping time of when to delete the record and retrieve new data.
The Routing server has only to retrieve data and implement the logic of this application.
Finally the JavaFX Application has the responsability to display and interact with the user, she doesen't calculate thinks and only sends requests to the Routing server`.