This is a example of microservice built in c++, and using hexagonal architecture.
sudo apt-get install build-essential
Instalar Oat++
https://oatpp.io/docs/installation/unix-linux/#ubuntu
https://oatpp.io/docs/start/step-by-step/#simplest-project
sudo apt-get install gcc-10 g++-10
sudo apt-get install libcpprest-dev
sudo apt-get install nlohmann-json3-dev
cmake .
make