Introduction There are many different frameworks that allow you to develop and deploy microservices. Payara, the team behind the Payara Server have a couple of options for deploying microservices - PayaraMicro and Payara MicroProfile. So, what exactly are PayaraMicro and Payara MicroProfile? What is Payara Micro? Both PayaraMicro and Payara Microprofile are small .jar files that allow you to deploy .war files from the command line allowing Java EE applications to be easily executed.

Introduction When deploying an application to Payara Micro, the default context path for any web resources is defined by the name of the archive. For example, if I deploy the archive PayaraRest-1.0-SNAPSHOT.war, the context root is defined as /PayaraRest-1.0-SNAPSHOT $ java -jar payara-micro.jar --deploy PayaraRest-1.0-SNAPSHOT.war ... [Payara Micro 4.1] Loading application [PayaraRest-1.0-SNAPSHOT] at [/PayaraRest-1.0-SNAPSHOT] There are a few techniques however for changing the context of deployed applications in Payara Micro.

Introduction Running Payara Micro services on Heroku is incredibly straightforward. There are 2 basic ways of running a Payara Micro service on Heroku: Create a Fat Jar Deploy a .War file along with PayaraMicro.jar I prefer to deploy applications as .War files rather than Fat Jars, so in this example, I’ll show how to create a Heroku application and deploy a Payara Micro service to it. Enabling a Payara Micro Application For Heroku To enable a Payara Micro application for running on Heroku, there are two simple steps we have to make.