microservice spring boot + intellij + jdk8

create a microservice with spring boot in intellij, where you must receive a json where you must have the image of the fingerprint, the image of a photo, the procedure number, paternal surname, maternal surname, name for 20 people, it must also count With security, the microservice must allow concurrency of at least 10 at the same time, the service must be deployed in high availability, maven and payara must be used, with jdk 8, and with a balancer with two nodes. Likewise, these data are received to generate a json and then send it in an .exe. Do you have any questions before sending me a result in architecture and programming? Also 1. I want to use good security for spring and consume the service, recommend me. 2. the json is sent to the .exe and it returns another json to be stored in a repository. 3. I do not have an infrastructure that I recommend is the best, remember that the server is payara. 4. if it returns a json to then be stored in a repository. 5. payara would be used to run the microservice. Remember that you must have two knots for a crowd of 10 at the same time at least and there may be more. Do you have any additional questions? You must also train in its implementation and use