Master Microservices with Spring Boot and Spring Cloud - Step 12 – Setting Up Dynamic Port in the Response – V2

The video tutorial explains how to manage multiple instances of currency conversion and exchange microservices. It covers adding an environment variable to track which instance is responding, using Spring's Environment class to get port values, and running applications on different ports. The tutorial concludes with a summary of the enhancements made to the currency exchange microservice.

Why is it important to know which instance of the currency exchange microservice is responding?

• To improve the speed of the response

• To reduce the number of instances needed

• To verify load balancers and naming are functioning correctly

• To ensure the correct currency rates are used

What is the purpose of adding an environment variable in the currency exchange microservice?

• To enhance security

• To track the instance providing the response

• To store user preferences

• To increase the response time

Which class does Spring offer to get the value of the port dynamically?

• PortManager

• PortHandler

• Environment

• ServerConfig

What property name is used to get the local server port in Spring?

• instance.port

• server.port

• local.server.port

• application.port

How can you run multiple instances of the application on different ports?

• By installing the application multiple times

• By changing the port in application properties and using run configurations

• By modifying the application code

• By using different IP addresses

What command line argument can be used to set the server port when running an instance?

• -Cserver.port

• -Sserver.port

• -Pserver.port

• -Dserver.port

What happens when you provide an environment variable for the server port?

• It is ignored if application properties are set

• It overrides the port configured in application properties

• It sets the port to a random value

• It causes a conflict with the default port