What is the easiest way to raise multiple local application instances for debugging/testing?

Question

Java

Good afternoon ! I am developing a REST service. Stack: SpringBoot, Gradle. For debugging / testing purposes, I want to have several application instances locally raised on different ports and with different settings. Is it easier to do it with help? Thank you !

Answer 1

With the help of docker

Answer 2

• create a separate directory (for simplicity)
  
• in the directory you make a link to your jar (so as not to copy it every time)
  
• next to the link you create several files application-p1.properties, application-p2.properties, ..., application-pN.properties, with the necessary settings
  
• you run several instances, each with its own profilejava -jar ZZZ.jar --spring.profiles.active=pX
  

Answer 3

docker or virtual machines