Java REST services, search for smallest footprint

For my private projects I have rented a virtual Linux server in the cloud.
Since this server has a limited amount of memory I would like my microservices to be as small as possible.
Most of my microservers expose a REST API, so I decided to test some different implementations to implement a REST service.

Install IntelliJ with git and debug/hotdeploy to wildly

Install IntelliJ
Install the Community Edition of intelliJ.

Git in Intellij
In intelliJ: VCS – Enable Version Control Integration | choose git

Enable Debugging:
Start wildfly with the option –debug (run “standalone.bat –debug 8787”)

Debug a remote wildfly application using Intellij

To be able to debug a remote wildfly application, the wildfly application must be started using the following arguments:

--debug 8787

In Intellij:
Run – Debug – Edit Configurations.
In this screen press ‘+’ and choose ‘remote’.
You can name this ‘wildfly remote’ and set the host to the remote server’s ip-addess and set the port to 8787.

By pressing the ‘Debug’ button, a connection to the remote wildfly will be created and you will be able to place breakpoints on the remote wildfly,