To test it out, simply execute the following command:
./mvnw gatling:execute
to execute all simulations.
./mvnw gatling:execute -Dgatling.simulationClass=${pathToSimulation}
e.g.
./mvnw gatling:execute -Dgatling.simulationClass=coffee.synyx.loadtests.auth.AuthLoginLogoutSimulation
You can find more information about gatling in their documentation
The Gatling Recorder helps you to quickly generate scenarios, by either acting as a HTTP proxy between the browser and the HTTP server or converting HAR (Http ARchive) files. Either way, the Recorder generates a simple simulation that mimics your recorded navigation.
More information at the recorder documentation of gatling
To start just type:
./mvnw gatling:recorder